ii' COLUMBIA R. Ula 6 DEPARTMENT of OCEANOGRAPHY NENALEM R. TILLAMOOK SAY SCHOOL of SCIENCE OREGON STATE UNIVERSITY SILETI R. YAOU/NA R. ALSEA R. SIUSLAW R. UMPOUA R. COOS BAY RESEARCH ACTIVITIES 1 April through 30 September 1965 Edited by PrOV.ss R.por* 16 tek,enc. 65-23 Nov.mb.r 1965 Wayne V. Burt Chairman Department of Oceanography School of Science Oregon State University Progress Report No. 16 RESEARCH ACTIVITIES April through 30 September 1965 Edited by Susan Borden Office of Naval Research Contract Nonr 1286(10) Project NR 083-102 Contract Nonr 1286(09) Project NR 083-600 Atomic Energy Commission Contract AT(45-1)1750 Contract AT(45-1)1751 Public Health Service Grant ES 00026-02 Grant AI 05640-02 Air Force AF-AFOSR-62-376 AF-19(628)2778 National Science Foundation Grant GB-531 Grant GP-3582 Grant GP-2232 Grant GP-2186 Grant GB-1588 Grant GP-2566 Grant GP-2876 Grant GP-3548 Grant GP-3556 Grant GP-4247 Grant GP-4465 Grant GP-4642 Grant GP-4649 Grant GP-4472 Grant GP-5076 Grant GP-2472 Reference 65-23 November 1965 Reproduction in whole or in part is permitted for any purpose of the United States Government. TABLE OF CONTENTS PHYSICAL OCEANOGRAPHY Variability of Frontal and Tidal Currents on the Continental Shelf - Collins, Mooers, Pillsbury, Pattullo. . . . . . . . . Subsurface Currents off Shore - Stevenson, Pattullo, Wyatt. . Bottom Current Measurements - Weyl, Skov.. . . . . . . . . . . . Tides and Water Level in Yaquina Bay - Pattullo, Lee, Gilbe rt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 5 . . 7 . . 8 . 8 . 9 . 9 . 9 9 Antarctic Intermediate Water in the South Pacific - R. Johnson, Panshin, Pattullo . . . . . . . . . . . . . . . . . . . . . Upwelling - Panshin, Pattullo . . . . . . . . . . . . . . . . . . . . . . Atmospheric Effects on Incoming Solar Radiation in a Marine Environment - Quinn . . . . . . .. . . . . . . . . . . . . . . . . . . . . . Oceanic Heat Storage - S. Kulm, Pattullo . Evaporation over Yaquina Bay - DeRycke, Pattullo . . . . . . . . Velocity of Sound off Oregon - Grocker, Smith, Pattullo . ... . Hydrographic Survey - Wyatt, Pattullo, Still, Barstow. . . . . . Bioluminescence as Environmental Noise in Underwater Optical Systems - Neshyba . . . . . . . . . . . . . . . . . . . . . . Measurement of Radiation at Yaquina Bay - Burt, Maughan . . . Instrumented Pressure Chamber - Mesecar . . . . . . . . . . . . Spectral Analysis of Oregon Sea Level Data - Smith, . . . Crocker, Panshin, Mooers . . . . . . . . . . . . . . . . . . . . . . . . 11 . 13 15 .1 5 . . . . . . . 10 10 . GEOLOGICAL OCEANOGRAPHY Continental Shelf Sedimentation - Byrne, Runge............ 1 7 Astoria Canyon - Byrne, Carlson . . . . . . . . . . . . . . . . . . . . Foraminiferal Ecology - Fowler, Boettcher . . . . . . . . . . . . . Astoria Fan - Byrne, Kulm, Nelson, Russell . ... . . . . . . . . Cascadia Abyssal Plain - Kulm, Fowler, Byrne, Duncan . . . . Coastal Sediments - Kulm, Byrne .. . . . . . . . . . . . . . . . . . . Near shore Carbonate Sands of Bermuda - Kulm, Carlson . . . . Estuarine Foraminiferal Ecology - Fowler, Hunger, Manske. . . 17 . 18 .1 8 .1 9 21 . 22 22 . GEOPHYSICAL OCEANOGRAPHY Seismic Work at Sea - Berg, Dehlinger, French, King . ... . Thermal Studies - Berg, Bodvarsson, Hutt, Vossler . . . . . . Theoretical Studies - Bodvarsson, Maloof, Berg, Papage or ge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Earthquake Seismology - Dehlinger, Chiburis, French, Gallaghe r 23 23 .. 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Marine Gravity - Dehlinger, Couch, Gemperle . Magnetics - Berg, McKnight, Emelia, Bales . . . . . . . Land Gravity Studies - Berg, Thiruvathukal .. . . . . . . Seismic Wave Studies - Berg, Trembly, Sarmah, Long, Souders . . . . . . . . . . . . . . . . . . . . . . 24 . 24 . 24 . . . . . . . . . . . . . . . 25 25 CHEMICAL OCEANOGRAPHY Offshore Chemistry - Park, Catalfomo, George, Yamamoto Oxygen and Phosphate in the North Pacific - Pytkowicz , . . . 27 .................................... 27 . 27 Kester Estuarine Chemistry - Park, Catalfomo, Webster . . . . Chemical Reactions in Sea Water - Pytkowicz, Kester, Bergener . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Chemistry of Sea Water - Weyl, Connors, . . . . . . . . . . . 28 Duedall .................................... 28 Improvement of Shipboard Techniques - Park, George, Wyatt ..................................... 2929 The Role of the Ocean in Climatic Change - Weyl. . . . . . Salinity Extrema of the World Ocean - Weyl, Ingham . . . . . Absorption of Alkalinity from Sea Water by Clay Minerals . Deffeyes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 . . . 30 . . 31 . . 31 . .31 . . 33 . . . .3 3 . . 34 . . MARINE RADIOECOLOGY AND RADIOCHEMISTRY Radioecology of Oceanic Animals - Pearcy, Osterberg, Eagle, Tennant, Wyandt, Larsen . . . . . . . . . . . . . . . . . . . . . Radioecology of the Benthos - Carey, Osterberg, McCauley, Hancock, Alspach, Larsen . . . . . . . . . . . . . . . . . . . . . Radiochemistry - Osterberg, Cutshall, Cronin . . . . . . . . . . In Situ Sediment Probe - Cutshall, Osterberg, Jennings . . . . Alpha Emitters in the Columbia River - Jennings, Osterberg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dissolved Organics in Sea Water - Cronin, Osterberg . . . . . Uptake of Radionuclides by Benthic Amphipods - Cross, Osterberg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chemistry of Chromium-51 - Cutshall, Osterberg . . . . . . . . . . 33 34 BIOLOGICAL OCEANOGRAPHY Feeding Habits of Benthic Organisms - McCauley . . . . . . . . . Benthic Ecology and Systematics - Carey, McCauley, Alspach, Ha nc o ck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 5 . 35 Studies on Reproduction of Benthic Invertebrates - Carey, Hufford . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Benthic Fishes - Eagle, Pearcy . . . . . . . . . . . . . . . . . . . Oceanic Trematode Studies - McCauley, Eagle . . . . . . . . . Polychaete Distribution in Yaquina Bay - Carey, Morrison . Polychaetous Annelids of the Offshore Waters of Oregon Carey, Hancock . . . . . . . . . . . . . . . . . . . . . . . . . . . Deep-Sea Fouling Studies - Tipper, McCauley . . . . . . . . . . Ecology and Distribution of Oceanic Animals - Pearcy, Coleman, Donaldson, VanArsdale . . . . . . . . . . . . . . . .3 5 .3 6 .3 6 .3 6 . . . . . . . . . . .3 7 .3 7 . . .3 7 Ecology of the Oceanic Shrimp, Sergestes similis - Forss, Pearcy ....................................38 . 38 Euphausiids and Copepods - Hebard . . . . . . . . . . . . . . . . . . . Medusae, Siphonophores and Chaetognaths - Renshaw. . . . . . Oceanic Amphipods - VanArsdale . . . . . . . . . . . . . . . . . . . Salps - Hubbard, Pearcy . . . . . . . . . . . . . . . . . . . . . . . . . Marine Microbiology - Morita . . . . . . . . . . . . . . . . . . . Energy and Element Transfer in the Lower Marine Food Web - Small, Hebard, Be rge ron, Fowler . . . . . . . . . . . Phytoplankton Ecology I - Curl, Small, Hardy, Glooschenko . Phytoplankton Ecology II - Small, Curl, Hardy . . . . . . . . . . Snow Algae - Curl, Hardy, Iverson . . . . . . . . . . . . . . . . . . Vertical Distribution and Migration Studies - Pearcy, Forss, Laurs, Renshaw, VanArsdale . . . . . . . . . . . . . . . . . . . Plankton Inventories at Yaquina Bay - Frolander . . . . . . . . . . .. EDUCATIONAL PROGRAM . 38 . . . . 38 . 39 . 39 . . . . 39 .4 2 . . . .4 5 . 45 46 46 . . . . 47 . . . . . . . 49 49 . . . . 51 MARINE SCIENCE CENTER Dedication. . . . . . . . . . Aquarium and Museum . East Research Wing . . . Research Projects at the Marine Science Laboratory . . . . . . . .51 RESEARCH VESSEL YAQUINA 53 STAFF .............. 57 VISITING SCIENTISTS. 59 PUBLICATIONS AND PAPERS Papers Published . Papers Submitted . . . . . . . . . . . . . . . . . . Papers Presented at Scientific Meetings . 61 . . . . . . . . . . . . . . . . 64 65 PHYSICAL OCEANOGRAPHY Variability of Frontal and Tidal Currents on the Continental Shelf Collins, Mooers, Pillsbury, Pattullo The major portion of our effort to date has been obtaining equipment and supplies, establishing and maintaining operational capability with the oil companies, and acquiring data. Our data have not yet been thoroughly analyzed, and a large part of the collection is still in analog form. Hence, the results presented are both cursory and preliminary. Measurements made during thi period include: M/V SEA BREEZE II, 21 May 1965: Current speed and direction' profiles at four anchor stations located symmetrically about 44° 501N, 1240161W. A 24-hour survey of temperature, current speed, and direction with one five-bottle Nansen cast for WODECO III2, 17-18 June 1965: temperature and salinity and four measurements of surface temperature and salinity at 44° 50'N, 124° 161 W. Moored Current Meter System, 11 July - 2 August 1965: Current speed and direction at 20-minute intervals at 20, 40, and 60 meters. Temperature at 5-minute intervals at 20 and 40 meters. (Moored 1. 1 miles east of WODECO III. ) WODECO III, 11 July - 2 August 1965: Continuous tidal height measurements. Wind speed and direction, swell direction, height, and period, sea direction and state, and barometric pressure at 4- hour intervals at 44° 50' N, 124° 16' W. WODECO III, 22-23 July 1965: a 24-hour survey of the temperature and salinity structure of the water column at 44° 50' N, 124° 16'W. One current magnitude profile with the Hydro-Products meter. M/V BARRACUDA, 28-29 July 1965: A 24-hour survey of current speed and direction, temperature, and salinity at 44° 27'N, 124° 21' W. 1 Current direction obtained with the Hydro-Products meter was doubtful through 25 July 19 65. 2Western Offshore Drilling and Exploration Company Barge No. 3. Moored Current Meter System, 28 August - 24 September 1965: Current speed and direction at 10-minute intervals at 20 and 60 meters. Temperature at 20 and 40 meters at 5-minute intervals. (Moored at 44° 29' N, 124° 27' W. ) WODECO III, 28 August - 16 October 1965: Continuous tidal height recording. Wind speed and direction, swell direction, height, and period, sea direction and state, and barometric pressure at hourly intervals at 44° 30' N, 124° 25' W. A 48-hour survey of the temperature and salinity structure of the water column at 44° 30'N, WODECO III, 24 - 26 September 1965.: 1.24° 25' W. R/V YAQUINA, 24 - 25 September 1965: Drogue measurements of currents about 5 miles southwest of the WODECO III. Moored Current Meter System, 24 September - 14 October 1965: Current speed and direction at 10-minute intervals at 20 meters. (Moored at 44° 29' N, 124° 27' W. ) Figure 1 shows the temperature field as a function of time based upon hourly BT observations 17-18 June 1965. The significant feature noted here is a slight temperature inversion between 40 and 80 meters. The feature was also seen in BT traces acquired on 7 and 11 July 1965. The variability observed is indicative of either incoherent motion or the superposition of several coherent motions. Longer records are required to resolve the spectral properties of this kind of data. Vertical motions with amplitudes of several meters and periods of several hours are not inconsistent with these fluctuations in temperature. It was demonstrated that a sampling rate of at least once per hour was necessary to track the temperature variations at a 0. 1 °C level (at least during this period of time). In order to seek out evidence for the vertical amplitude of an internal tidal wave, we must consider the effects of nontidal motions. The statistical techniques of correlation and spectral analyses are appropriate for this "sorting" of the phenomena. Figure 2 displays the depth profiles of current speed and temperature, constructed from a time series of values observed hourly during a 24-hour survey on 17-18 June 1965 at WODECO III. Current speed was sampled at five selected depths from the time series; additionally, a full profile was made and is termed."representative" based on other 40 CM/SEC. 7 20 00 8 9 10 II Ia 13 i N1N.-7 f-IYfAX ii s 50 W Ld tat FW I- 2 2 a W 0 I r i r;, i r MAX. AVERAGE Z I N. !---RE PR ESENTATIV E 0 100 I rl 1 CURRENT SPEED TEMPERATURE 180 Figure 1. Temperature field as a function of time. WODECO III, 17-18 June 1965. Figure 2. Depth profiles of current speed and temperature. WODECO III, 17-18 June 1965. w 0.1 0.01 20 METER RECOR D 40 METER RECOR 0 - 0.001 160 80 40 (PERIOD IN MINUTES) Figure 3. Autopower spectra of two-day records of temperature, 11-13 July 1965. -M_ 20 5 such profiles observed at and near this site. This plot demonstrates the general depth dependence of current speed and temperature and indicates the order of magnitude of their variability. A zone of shear, present from the surface to 75 meters, is most intense between 55 and 65 meters. (A halocline and pycnocline were indicated to at least 70 meters, from the one set of water samples available. ) The BT's depth registration, in error by about 10%, was not corrected for this plot. The temperature inversion of about 0. 1 °C is quite apparent from about 46-65 meters. The temperature generally becomes less variable with depth except in a band of depths between about 60 and 80 meters. It is of interest to know whether this anomalous variability is associated with the zone of increased vertical shear in horizontal speed. Figure 3 is the autopower spectra of two-day records of temperature data, averaged over 5-minute intervals, at depths of 20 and 40 meters on 11-13 July 1965. The analyses indicate that at low frequency (near tidal) the energy at 20 m is 20 times that at 40 m. At the high frequency end of the spectra, the two records virtually coincide, which probably establishes the background noise level for the combined environment-sensed system, The upper trace indicates a possible spectral peak which exceeds the 90% confidence level. Its period is bounded between 80-160 minutes, which is in the frequency band to be expected of edge waves due to shelf resonances. These are the first spectra computed from a 21. 5 day set. It is apparent that in order to study the possible peak properly, it will be necessary to use a longer record and a high-pass numerical filter to increase the frequency resolution, while maintaining statistical stability. The thermal regime at the two sensors was fundamentally different during this period of time; the sensor at 20 meters was at the lower edge of a temperature inversion. Both sensors were in the halocline. Subsurface Currents Off Shore - Stevenson, Pattullo, Wyatt Drogue cruises were made in July and September. In July, currents were measured at 0, 10, 20, 100 and 500 meters depth for 56 hours. Three time series were made in September. One of the series was a 48-hour nearshore study, which was coordinated with simultaneous current velocity measurements at 10, 35 and 55 meters depth from an oil drilling platform. These two sets of measurements will be compared in the near future. An offshore F DISTRIBUTION OF DOMINANT PERIODS 30%. ,20% J tO% 0 27 12 33 36 39 PERIOD (HR.) Figure 4. Distribution of dominant periods in drogue data. l \ PEAK CONCENTRATION t VS TIME JULY,1965 TEST NO. 4 .1 8 C 0 N C E N T R A T I 0 N T2 .10 9 (COS.) 2 J10 1 Figure 5. TIME (MIN.) 1100 Peak dye concentration vs. time. 7 drogue series lasting 57 hours was made at 10, 50, 90, and 200 meters depth. The third time series was planned to show the importance of buoy motion on our estimates of currents. Two taut-line anchor buoys were used in water of 630 meters depth. Observations were taken at 5-minute intervals for 10 hours. The Alpine ranging section of the scientific radar was used to provide the high resolution needed during the series. Some results from the cruises of March 1964, through July 1965, indicate the presence of definite periodicities not only at the sea surface but. also as deep as 500 meters. Figure 4 illustrates the distribution of 64 periodic components of the data. The periods shown are the most significant (largest amplitude) for each of the drogues. The actual displacements varied from 0. 8 nautical mile down to 0. 07 nautical mile. Fluoresecent dye work was continued on both of, the cruises. A submersible pump was used after the dispersal for sampling the water at depths from 95 meters up to the sea surface. On the July cruise water samples were drawn into sample bottles at a rate of three per minute during the ship's transect of the dye patch. Figure 5 shows the relationship between time and dye-decay observed from one of the July dye dumps. The solid lines represent theoretical decay; the dots indicate observations. The relationship of dye concentration and time compares favorably with surface dye work done by others. On the September cruise we used a new continuous flow cell for the fluorometer. A flushing rate of better than once per second was achieved. Because of time limitations, we used the instrument for continuous sampling on only one short dye dump. Bottom Current Measurements - Weyl, Skov In cooperation with Dr. J. N. Carruthers, visiting scientist at OSU in May, we performed a number of bottom current measurements with his "Pisa" current meter. Subsequently, an improved bottom release mechanism was constructed and tested at sea. The measurements suggest that the bottom currents are variable in speed and direction. To permit making continuous bottom current measurements, a design for a new type of bottom current meter has been developed. It consists of a boomerang type "Pisa"with internal photographic recording of speed and direction. In order to keep the cost low, we plan to use a fluid-filled camera, operating at ambient pressure. Actual development of this instrument is awaiting funding. Tides and Water Level in Yaquina Say - Pattullo, Lee, Gilbert Records of water level at the Marine Science Center dock have been collected since May 1964. Not all of the record is of scientific quality but most of it can be used. Daily calibration checks are now made, since the Laboratory has been staffed. Mr. Kuo Heng Lee, graduate student from Taiwan has been reducing all records to hourly heights referred to a known datum. The data will then be used in studies of sea level and possible edge waves along the shelf. Many of the records show evidence of wave action in the bay with apparent periods of the order of tens of minutes, Mr. William Gilbert has started to examine possible seiching characteristics of the bay. Antarctic Intermediate Water in the South Pacific - R. Johnson, Panshin, Pattullo Core analysis has been intensively applied to the study of the distribution of the Pacific Antarctic Intermediate Water. Source characteristics, core intensity, and equivalent thickness have been examined. Total volume of this water type present is computed to be 5. 27 x 107 km3. Figure 6 shows the distribution of the maximum percentage of the core. Contours below 40% have not been drawn. MAXIMUM PERCENTAGE AT THE CORE ANTARCTIC INTERMEDIATE WATER FORMAtION ZONE=::e= However the percentage of this water decreases rapidly north of 10° N, and the water essentially disappears within a few degrees north of the equator. Upwelling - Panshin, Smith, Pattullo Studies of upwelling along the Oregon coast are being continued. Lowering of sea level is concurrent with upwelling, at least in part due to the increased density of the upwelled water column near shore, and to the slope of the sea surface with distance offshore. Tidal data, obtained from observations taken by the Coast and Geodetic Survey in 1933-34, have been processed to remove astronomic tidal constituents and inverted barometer effect. Regression analysis will be used to determine the relationship between departures of this adjusted sea level from the average level over the period of observation and the N and E components of wind stress. Atmospheric Effects on Incoming Solar Radiation in a Marine Environment Quinn A search of available literature concerning the effects of various atmospheric parameters and phenomena on the incoming solar radiation is currently being conducted. Also, all locally available weather and solar radiation data applicable to Wake Island have been studied with regard to their usefulness in this project. Most of the published data is in summarized form and does not allow evaluation with the desired degree of detail. This study requires simultaneous short period evaluations of solar radiation and atmospheric data. The required observational data will be requested from the U. S. Weather Bureau. Oceanic Heat Storage - S. Kulm, Pattullo Heat stored in the upper 100 m of the ocean has been determined from data collected during 1962 and 1963.. The three areas of study are off Newport, Coos Bay, and Brookings, Oregon. Distribution of heat with distance from shore and seasonal variations in heat storage have been determined. The results are being compared with the in situ heat budget as discussed by Lane (Ph. D. dissertation, OSU, 1965). A paper on the results is in preparation. Evaporation over Yaquina Bay - DeRycke, Pattullo The dock at the Marine Science Center at Yaquina Bay is located in a highly marine environment. The water that flows underneath it has oceanic characteristics most of the year. During summer, winds 10 are usually light and variable at dawn; a strong sea breeze blows up almost every afternoon. During the summer season Lt. Richard DeRycke (USCGS) set up and monitored a set of evaporation measuring devices on the dock. The basic device was a standard evaporation pan; supplemental devices were atmometers. Wind, air and water temperature, and wet bulb temperatures were also measured. Additional data were collected from several heights above water level on board the YAQUINA and on one occasion from a moored oil company barge, the WODECO III. Results are being analyzed. Velocity of Sound Off Oregon - Crocker, Smith, Pattullo Hydrographic data collected by the department have been used to compute the velocity of sound in waters off the coast. Normal vertical structure and seasonal anomalous conditions have been described. Mr. Kimball Crocker is preparing a thesis on the results of this work. Hydrographic Survey - Wyatt, Pattullo, Still, Barstow Standard hydrographic casts to 1000 and 1200 m were made on cruises in June, July, and September. In June casts were made to 165 miles west of Newport and Astoria, Oregon. We occupied stations along a line extending 265 miles west of Newport in July and 65 miles west of Newport in September. Stations were made at 10-mile intervals from 5 to 45 miles west of the Oregon coast. Beyond 45 miles, stations were made at 20-mile intervals. Hydrographic and BT casts were also made on benthos, nekton, and phytoplankton cruises. Table I. Summary of Hydrographic Samples Hydrographic casts Bathythermograph casts Drift bottles released Surface temperature and salinity samples Midwater trawl hauls Vertical meter net tows C-14 phytoplankton productivity samples Chlorophyll pigment samples 92 113 214 98 14 7 320 260 Ii Bioluminescence as Environmental Noise in Underwater Optical Systems - Neshyba The receiver section of an optical transmitter-receiver system operating in ocean waters will respond to bioluminescent radiation of wavelength within the receiver bandwidth. Naturally occurring bioluminescence has been found at various intensities and at various depths in the ocean. This investigation has been concerned with the enhance- ment,inhibition, or alteration to the natural luminescent field by the presence of pulsed, optical frequency radiations from the system transmitter. A number of 700 meter depth stations have been made off the Oregon coast, using an instrument consisting of a photomultiplier receiver and a flashing xenon light. The light emits a 1 millisecond pulse at repetition rates of 6 to 24 pulses per minute. When the instrument is on station, the flashcube is energized and emits a train of light pulses. The detected bioluminescent signal is transmitted via cable to a surface recorder. Figure 7 contains traces of the recorded luminescent field in the presence of pulse stimuli in several train lengths. These stimuli are shown on the traces as sharp spikes with dots. Figure 7a is a trace of luminescent field recording when stimuli are spaced 50 seconds apart. The trace is essentially identical to the trace of the natural bioluminescent field at that station. Radiation level is about 10-8 microwatts`cm2. Figure 7b is a subsequent trace during which the xenon light was pulsed twice, with pulses spaced 2. 5 seconds apart. An immediate rise in the luminescent level occurred following the second pulse. After the level had returned to its natural level, the stimuli were repeated with identical results. Figures 7 c and d are traces of records from similar tests, except that the pulse train of stimuli was lengthened to 3 and 5 pulses, respectively. In each case, the rise in luminescent increased directly with length of the train of stimuli. The luminescent reaction to a continuous train of stimuli is shown in Figure 7e. Here only the first ten stimuli are shown in spikes and dots. The luminescent level reaches a maximum level of 10-4 microwatts/cm2, an increase of 104 above the level of the non-stimulated luminescence. The response of bioluminescent organisms to light stimuli is positive and measurable. However, attempts to obtain samples of the responsible organisms have not been successful. 12 (e) 070 0 SECONDS I (C) a Y (b) IG e 10 O 0 SECONDS Kf4 64 (4) 10 e Figure 7 Recorded luminiscent field in the presence of pulse stimuli in several train lengths. Stimuli are shown as sharp spikes with dots. The precise spectral ranges of the stimulated and natural luminescence have not been measured. However, the bandwidth of the receiver used here was from 300 to 650 millii-nicrons. Thus, the tests covered those bandwidths most likely to be selected as operating frequencies for active optical devices. It is concluded, therefore, that an optical system using pulsed light will enhance the noise environment in which it operates. A full report on these tests and other tests made in the Gulf of Mexico, together with qualitative and quantitative analyses of the results, will be submitted for publication shortly. Measurement of Radiation at Yaquina Bay - Burt, Maughan The flux of solar and long-wave radiation has been measured over The radiation measuring system recently developed by Maughan and Mesecar (1965) and described in Progress Report No. 15 was used for these measurements. The completed total hemispherical radiometer is shown in Figure 8. Yaquina Bay. U Figure 8. Total hemispherical radiometer. 14 Preliminary examination of the meteorological and oceanographic data taken in conjunction with the radiation measurements at Yaquina Bay show the meteorological and oceanographic "climate" of the Bay is very nearly identical to the climate in the oceanic area immediately off the Oregon coast. Thus, measurements of radiant energy over Yaquina Bay may be considered representative of the radiant energy flux flux in an oceanic environment. Figure 9 shows the variation with time of incoming and upcoming total hemispherical radiation. These are the first such measurements made in this area of the Pacific Ocean. Detailed analysis of this and the other radiation parameters have been made by Maughan for inclusion in his dissertation. A meteorological instrument shelter is presently under construction for permanent installation on the dock at the Marine Science Center near Newport. The roof of the shelter is designed especially for the mounting of meteorological instruments. The instruments will be connected to automatic recording and integrating equipment for continuous monitoring of the various parameters. 1.8 1.4 1.2 1.0 0.8 0.6 0.4 a---0 UPCOMING RADIATION ---+ INCOMING RADIATION 0.2 0 12M I 2 3 4 5 6 7 8 9 10 II 12N 1 2 34 5 6 7 8 .9 10 TIME OF DAY, PDT Figure 9. Incoming and upcoming total hemispherical radiation with time. Yaquina Bay, Oregon. June 1965. II 12M 6o ti Instrumented Pressure Chamber - Mesecar A portable high pressure chamber has been assembled for use in the department's research projects. For example, it will be used to test instrument cases and to aid in the study of biological specimens, geological core samples, and in situ transducers under pressure. The chamber is made from a modified 16-inch projectile (Figure 10). It is initially charged with tap water, and an electrifiedhydraulic pump is then used to reach final pressures as high as 12, 000 psig. Valves have been included in the system to enable the in- vestigator to use the pump to pressurize pressure chambers other than the main chamber. Ten high pressure electrical leads feed through the cap for instrumen- L tation purposes. I I Figure 10. Back view. Spectral Analysis of Oregon Sea Level Data - Smith, Crocker We have begun a project to search for the presence of waves with periods greater than one day on the Continental Shelf off Oregon. This study has been motivated by several factors: (1) our continuing interest in upwelling and related coastal phenomena; (2) B. V. Hamon' s results from his analyses of Australian sea level data; and (3) promising results from i n i t i a l correlation and spectral analyses made during the summer. We are employing standard techniques of auto- and cross-correlation and auto- and cross-power spectral analyses. To date, sea level data taken during 1933-34 from four stations along the coast, and atmospheric pressure data from one site have been used. 6 IASNINOT 2 0 -A PLIAIN 0 I CAfl'PMe lvi Geologic Provinces West of Oregon CALIFORNIA 17 GEOLOGICAL OCEANOGRAPHY Continental Margin Continental Shelf Sedimentation - Byrne, Runge We have completed laboratory investigations of the 650 samples collected from the shelf and upper slope between the mouth of the Columbia River and Cape Blanco. During the period from April to October we studied the heavy minerals from the shelf sediments. A report is in final stages of preparation and will be submitted for publication during 1966. Forty-four samples, from latitudinal lines about 20 miles apart, exhibited approximately 40 mineral species and varieties. Amphibole, pyroxene, and the opaque-garnet are the dominant mineral groups present. The amphiboles are most abundant in the fine-grained sediments and on the southern portion of the continental shelf; the pyroxene, opaque, and garnet groups are most abundant in the coarser-grained sediments inshore and on the central and southern continental shelf. Relative abundance of heavy minerals varies from 21% north of the mouth of the Columbia River to zero south of Heceta Bank in an area of high glauconite concentration. The average for the 44 samples is 4. 18%. Astoria Canyon - Byrne, Carlson As a part of the Astoria Submarine Canyon investigation, an additional 12 piston cores and 10 pipe dredge samples were obtained in August 1965. This brings the total number of samples to 115 (18 piston cores, 80 gravity cores and 17 pipe dredge samples). The piston cores are currently being photographed and described. Subsamples taken from each of the cores will be analyzed for texture and composition. The sediments of the canyon area as observed in the piston cores range from olive-green muds to gray clays. The cores taken in the axis of Astoria Canyon consist primarily of olive-green silts with variable numbers of fine sand layers, most of which are only a few millimeters thick. Cores from the canyon walls, however, very frequently contain gray clay. The clay layers often are interbedded with fine sand layers. 18 Foraminiferal Ecology - Fowler, Boettcher The systematic sampling of the shelf and slope off Oregon for modern foraminifera was continued during cruises in May and August. Two hundred sixty-two stations, were occupied bringing the total to 384. Most of the stations are located along 16 east-west traverses evenly spaced from 46° 10'N to 42° 11'N. Eighty-nine shelf stations were occupied on a grid pattern between 42° 53'N and 42° 11'N. Laboratory preparation of the samples is continuing. An additional study is underway to examine the areal distribution of foraminifera on a portion of the Oregon shelf between 43° 50'N and 43° 16' N. Facies of dead foraminifera will be based on portions of 74 samples originally collected for sediment analysis. The distribution of live foraminifera in the area will be determined from 116 samples collected at 46 stations along four east-west traverses located at 43° 50'N, 43° 40'N, 43° 30'N, and 43° 16'N. Replicate samples at many of the stations will be used for statistical evaluation of foraminiferal trends. One hundred fifty-four samples are ready for microscopical examination. Identifications and frequency counts have been made for 120 species in 17 samples. . Deep Sea Sedimentation Astoria Fan - Byrne, Kulm, Nelson, Russell Fourteen piston cores up to twenty feet in length and as many Phleger cores were collected from Astoria Fan during the past four months. This completes the sampling program with a total of forty piston cores and forty gravity cores. Eighteen piston cores have been opened, sectioned, photographed in both color and black and white, described in detail, sampled, and analyzed for texture. Generally the cores consist of olive drab silty-clay for about the upper 100 cm; lower portions are gray silty-clay with interbedded sand-silt layers. Most of sediments of the coarse interbeds (less than 2 cm thick) have silt-size median diameters, whereas deposits of the thicker coarse layers have median diameters in the fine sand range. Coarse layers over 40 cm thick have been encountered. Two cores located in channels leading from the mouth of Astoria Canyon consist mainly of layers of coarse sand and pebble gravels. An ash layer up to 10 cm thick was noted near the top of several cores. Preliminary analyses of one core reveal distinct differences in composition and texture in the pelagic sediment above and below coarse-grained layers. In many cases the fine sediment above the "turbidite" layer is coarser and has more organic material than the fine sediment beneath the coarse layer. 19 Several cores collected on the southwestern portion of Astoria Fan, between Astoria Channel and Cascadia Channel, invariably contain about 1 m of grayish mud overlying a like thickness of very fine to fine sand. In all cores taken in this area, penetration was halted after 1. 5 m of sand was cored. The inability of the piston corer to penetrate through the sand and the similarity of lithology over a large area indicate that this sand body may have wide areal distribution and considerable thickness. One core taken on the southernmost portion of Nitinat Fan, in the vicinity of the junction of Vancouver Valley and Cascadia Channel, is composed of very angular, medium to coarse sand, and appears to be quite different from that collected on Astoria Fan. Preliminary studies of the clay mineral composition of 35 sediment samples from Astoria Fan, Astoria Canyon, and the Columbia River indicate that the clay mineral suite is uniform both horizontally and vertically over the fan. The clay minerals present are montmorillonite, chlorite, and illite. Kaolinite has not been detected. Cascadia Abyssal Plain - Kulm, Fowler, Byrne, Duncan The southern portion of Cascadia Abyssal Plain off Oregon was investigated during a cruise in September (Figure 1). Several large features associated with the plain were surveyed. These include Astoria Fan and Channel, Cascadia Channel and Abyssal Gap, and a small portion of the seamount province adjoining the abyssal plain. Sounding lines were run between coring stations and over selected cross-channel profiles of Cascadia Channel and Astoria Channel. Precision depth records were made for more than 1200 nautical miles. Thirty-nine piston cores were collected from 32 different stations with duplicate cores being taken at seven of these stations. Eleven of these cores were taken along a profile (approximately 44° 40'N latitude) extending from the base of the continental slope 150 nautical miles westward into the seamount province. The piston cores range in length up to 11.4 meters. Single gravity cores were obtained at five piston coring stations; a five barrel multiple gravity corer was used as a trigger weight on the piston corer at the remaining stations. Two of the multiple gravity cores will be processed for foraminifera, two for sediment analyses, and one for organic carbon analysis. The echo soundings made over Astoria Channel from 44° 40' to 45° 15. 4'N latitude show that this channel is a broad shallow depression with many smaller channels incised within the larger one. Cores taken in the axis of the channel are composed primarily of olive green mud. Sand layers were noted in only one core. 47 SEA MOUNT COLUMBIA- RIVER 460 17. AS TO R. /A I 12 45° 9® 16 s o, b s YAQUINA SAY I 10- 30 44° as PISTON CORE STATION DREDGE STATION urcccn iwuu 131 130 CAPE BLANCO SENTS S FEET OF CORE 1.290 128° 127° 1260 125° 124° I230 122 Figure 1. Sample locations and echo sounding track (solid line). Sediment descriptions were made in the field and are ap proximate only. Gi Cascadia Channel was surveyed from 45° 29. 6'N, southward to about 43° 30'N latitude and then westward into the abyssal gap in the seamount province. The channel was also sounded for a short distance along each of the two branches that emerge from the gap onto Tufts Abyssal Plain. Cross-channel soundings were made at more or less regular intervals, usually not more than 10 nautical miles apart. The floor of the channel is quite variable in width over the area covered in the survey. A core barrel was badly damaged when coring was attempted near the abyssal gap. This experience suggests the presence of hard rock. Few Precision Depth Records show any evidence of submarine levees along Cascadia Channel. Where levee development does occur, the relief is not more than 4 fathoms. Cores taken in the axis of the channel contain sediments ranging from green and grayish-green mud to gravel. Sand is present in most of these cores. One core, 2. 5 m in length, is composed of medium to coarse sand underlain by about 0. 8 m of gravel, probably of continental origin. The longest cores were taken in the seamount province adjoining Cascadia Abyssal Plain. These cores, composed chiefly of foraminiferal lutite, will be used for stratigraphic correlations and paleoclimatic studies. One dredge haul was made on one of several seamounts bordering Cascadia Channel. Several nodular fragments of manganese, exhibiting concentric lamellar structure were collected, as was one piece of manganese- encrusted palagonite-glass breccia. Coastal and Estuarine Sedimentation Coastal Sediments - Kulm, Byrne Heavy mineral separations have been completed for all of the coastal sediments collected from southern Washington, Oregon, and northern California. Thirty-three grain mounts of the coastal dune sands in these areas and 100 grain mounts of the "Elk River" terrace deposits from southern and central Oregon have been prepared. Magnetic separations, X-ray analysis, and petrographic techniques are being used to identify the heavy minerals from all of the coastal deposits. 22 Nearshore Carbonate Sands of Bermuda - Kulm, Carlson Analyses of the beach and nearshore carbonate sediments of Bermuda have been completed. A manuscript for publication is in preparation. Estuarine Foraminiferal Ecology - Fowler, Hunger, Manske Netarts Bay. The analyses of 119 samples have been completed, and a final report is being prepared on the foraminiferal ecology of Netarts Bay, Oregon. The 52 species encountered have been grouped into four faunas whose areal distributions coincide with the major environments of the bay. The Elphidiella fauna occupies the main tidal channel and open ocean beach. This fauna consists only of calcareous species which are more characteristic of innermost shelf environments than those of the bay. The sand flats are populated by an Elphidium fauna also dominated by calcareous foraminifera. Mud flats bordering the east side and head of the bay support an abundance of agglutinated species characterizing the Ammonia fauna. Ammonia becarii tepida is the only calcareous species in this group. Marsh areas are dominated by the Trochammina fauna composed solely of agglutinated foraminifera. The greatest faunal diversity occurs on the sand and mud flats bordering the bay. Samples from these areas often contain six to nine living species. Standing crop values are highest on the bordering flats and in the marshes where more than 30 living specimens per cm2 are common. Seasonal collections from 11 stations indicate that maximum populations occur during the spring and fall seasons for some species and during the summer for, others. Yaquina Bay. During the six months covered in this report, we collected 121 samples of the foraminifera of Yaquina Bay. Of these, 92 samples, from eight stations in the main channel, are part of a collection made seasonally at these stations. Sixteen more represent the marsh and tidal flat environments. Complete areal coverage of the estuary was achieved with the sampling of 13 new stations. A total of 82 separate stations have now been sampled. To gain additional information on the physical environment, we are making carbon analyses on 26 samples taken from the tidal flats and marshes. 23 GEOPHYSICAL OCEANOGRAPHY Seismic Work at Sea - Berg, Dehlinger, French, King In May, Oregon State University and Scripps Institution of Oceanography jointly shot 11 seismic refraction lines, using the YAQUINA and HORIZON, off the coasts of northern California, Oregon, and Washington, and in deep water west of Oregon. From these results crustal thicknesses, layering, and upper mantle velocities of the continental shelf and in deep water will be determined to study variations in crustal structures. Good recordings were obtained along the lines; the data are being analyzed. The new power supply for the sparker, capable of supplying 12, 500 joules per second, has been tested at sea. Sub-bottom reflections from about 1000 feet have been recorded in water that was 500 feet deep. Sea conditions were not optimum for these recordings, and better results may be obtained in the future. Thermal Studies - Berg, Bodvarsson, Hutt, Vossler A new thermal probe has been designed and built, and several successful measurements have been made. Initial studies are being made over magnetic anomalies off the Oregon coast. Laboratory studies to relate thermal conductivity and electrical conductivity are in progress. A new thermal probe for measuring long time variations in temperature at the sea-bottom interface of the ocean floor is being constructed. Thermal measurements will be made to a depth of several meters in the bottom and to a height of 1 or 2 meters above the floor of the ocean. The initial design of this instrument is nearly complete. Recovery techniques are now being investigated. Theoretical Studies - Bodvarsson, Maloof, Berg, Papageorge The studies on direct interpretation methods in applied geophysics The methods that have been developed are being applied to the interpretation of thermal and hydrological data, in particular to the problem of reservoir testing in applied hydrology. Theoretical studies are also being carried out on the use of stable and radioactive isotopes in reservoir testing. have been continued. 24 Theoretical aspects of the prospecting for geothermal anomalies are being studied with particular emphasis on the vertical EM-field gradient method. A theoretical study of two phase flow problems in geothermal areas is in progress. Work is also being conducted on analytical continuation or potential fields and the filtering of potential field data. Modern methods of network analysis and synthesis have been used to develop a direct method for interpreting DC resistivity and magnetotelluric field data. Marine Gravity - Dehlinger, Couch, Gemperle Approximately 5000 miles of sea gravity lines were run off the coasts of Washington and British Columbia in May (aboard the USCGC YOCONA) and in June (aboard the YAQUINA), and 2500 miles along the Inside Passage of British Columbia, between Juneau and Seattle (aboard the University of Alaska R/V ACONA). These measurements provide data for a strip about 300 miles westward from the coastline, plus a landward extension along fjords in British Columbia. Gravity anomalies for these data are being determined. Magnetics - Berg, McKnight, Emilia, Bales Magnetic measurements have been completed off the west coast of the United States between San Francisco and Vancouver, British Columbia. The measurements extend from shoreline seaward for about 70 miles. The data are currently being analyzed. A spinner magnetometer has been constructed and checked. Studies to measure the homogeneity of the paleomagnetic field in chosen formations are currently underway. Land Gravity Studies - Berg, Thiruvathukal Free-air and Bouguer anomaly maps of the offshore and onshore Oregon area are being constructed for publication. The data are being analyzed. 25 Seismic Wave Studies - Berg, Trembly, Sarmah, Long, Souders Records from nuclear explosions are being used to investigate the continuity of amplitudes and energy at all distances from the source. Emergence angles, wave type, propagation path, and amplitudes are being investigated. A line of seismograph stations between Corvallis, Oregon, and Seattle, Washington, recorded a quarry blast (110, 000 lbs) near Newport, Oregon. This work was done in cooperation with the Geological Survey, Oregon State Department of Geology and Mineral Industries, and the Oregon Highway Department. The data are currently being analyzed. Earthquake Seismology - Dehlinger, Chiburis, French, Gallagher The World-Wide Seismic Station at Corvallis and satellite station at Klamath Falls, Oregon, have been operated continuously during this report period. Seismological Bulletins No. 5 and No. 6 have been completed and No. 7 and No. 8 are being prepared. A study on crustal and subcrustal structures in the Pacific Northwest states, based on dispersion of seismic waves recorded at the Long Range Seismic Measurement and World-Wide Standard Stations in the Northwest has been completed'. A dissertation on this study was written by Mr. Chiburis. The investigation of earthquake focal depths has been continued, with emphasis on the possibility of using waves arriving just after Pn as a measure of focal depth. 27 CHEMICAL OCEANOGRAPHY Offshore Chemistry - Park, Catalfomo, George, Yamamoto Processes contributing to the distribution of alkalinity and pH in the Pacific Ocean off Oregon during 1963 and 1964 have been examined. We are now preparing a report describing the basic seasonal and spatial distribution of these two properties. Our data on seasonal changes in alkalinity are taken from both the Columbia River and the sea off Oregon. These data show that we can forecast the alkalinity of the Columbia River plume, if we know its salinity. The general relationship is as follows: Alk (plume) = Alk(offshore) - Alk(river) Sal (offshore) - Sal (river) Sal (plume) + Alk (river) On the basis of our data, we can simplify the equation: Alk (plume) = 1.20 Sal + 1.10. (plume) 33.9 The alkalinity of sea water diluted by rain and coastal river runoff is different from that of sea water diluted by Columbia River effluent. This difference makes possible the identification of the Columbia River plume by its specific alkalinity. A note on this method of plume identification has been submitted for publication. Oxygen and Phosphate in the North Pacific - Pytkowicz, Kester Apparent oxygen utilization and preformed phosphate were used for a qualitative study of the waters` in the 1000-2000 m depth range in the Northeast Pacific. A paper on the results is in preparation. Estuarine Chemistry - Park, Catalfomo, Webster (Public Health Service) A study on the alkalinity budget of the Columbia River is underway. We find that the alkalinity of the river is about 1 meq/liter near the river mouth, in spite of the great fluctuations in daily flow rate. The alkalinity is stable, partly because the numerous dams along the main stream stabilize the alkalinity of overflow water. The dams store about 25% of the annual runoff of the Columbia River. 28 In June 1965, we made gas chromatographic determinations of total carbon dioxide and methane in the sea water of anoxic Nitinat Lake. We found approximately 1 ml/liter CH4 dissolved in the sea water. This work was a cooperative effort between the chemical oceanographers of the University of Washington and Oregon State University. Chemical Reactions in Sea Water - Pytkowicz, Kester, Bergener Because the changes in asymmetry, liquid junction, and reference potentials in going from buffers to sea water are not known, pH measurements in sea water do not yield thermodynamic hydrogen ion activities. This does not detract from the value of pH measurements used in selfconsistent schemes, but it does show that reproducibility rather than accuracy is of concern when different electrodes are used on the same problem. Measurements of a standard sea water sample with several glass electrodes showed that the reproducibility of a given glass electrodecalomel electrode pair is within + 0. 003 pH units. The reproducibility is + 0. 007 pH units when several glass electrodes are used. Fortunately this scattering is small compared to other uncertainties in the determination of dissociation constants and solubility products. Our high precision potentiometric equipment is currently being used in the determination of the apparent dissociation constants of phosphoric acid in sea water. These constants are needed for the study of the solubility of apatites and phosphorites. Physical Chemistry of Sea Water - Weyl, Connors, Duedall The measurement of the partial'molar volume of salts in sea water has been completed, and a report is being prepared. The measurement of the partial equivalent conductances of salts in sea water is nearing completion. The temperature change resulting from the mixture of equal volumes of sea water having the same temperature but different salinities has been measured in a specially constructed calorimeter. The salinities were held constant at 10. 24 and 60. 50%o; temperatures varied from 0 to 30° C. The temperature change is given by the equation: T = -0. 0533 + 0. 002388T - 0. 0000392 T2 Using these data and the heat capacity data of Cox and Smith (Proc. Royal Acad. London 252: 51-62, 1958), the following empirical expression for the heat capacity of sea water was derived. 29 Cp = 4. 2079 - 0. 0015 T - C(6.992 - 0. 0780 T) + C2(15 - 0. 5T) + 0. 002 where C is the mass fraction of salt and T is in degrees Centigrade. Reports on this work are in preparation. Improvement of Shipboard Techniques - Park, George, Wyatt Conductometric alkalinity determination. A continuous titration cell is being evaluated in the laboratory. A precision of + 0. 51o is readily 1. obtainable. We hope to improve the precision to + 0. 1 ojo. 2. Gas chromatographic determination of dissolved gases. Methane and hydrogen sulfide determinations in sea water were attempted. Methane was analyzed by a molecular sieve column and hydrogen sulfide by a silicon grease column. We find that the gas chromatographic determination of methane is fruitful, but that this method of determining hydrogen sulfide is inferior to colorimetric means. The Role of the Oceans in Climatic Change - Weyl Changes in the surface salinity of the ocean, particularly in the North Atlantic, can produce climatic change. A change in the North Atlantic from its present salinity distribution to one like the North Pacific would lead to a glacial climate. This change could be brought about by a slight shift in the winds that now carry water vapor across the Isthmus of Panama, provided that shift lasted about a thousand years. The glacial period could be terminated either by the resumption of vapor transport from the Atlantic to the Pacific, or by geothermal heating of stagnant bottom water. A uniform vertical salinity structure throughout the world ocean would lead to an ice free Arctic and a climate like that of the Tertiary. Salinity Extrema of the World Ocean - Weyl, Ingham A study of the salinity extrema of the world ocean has been completed and accepted as a Ph. D. thesis. Excerpts from this study are being prepared for publication. 30 Absorption of Alkalinity from Sea Water Clay Minerals - Deffeyes A study of the formation of Mg(OH)2 interlayers in marine clays was initiated at the beginning of the summer. Titrations at several different slow constant rates were used to study the alkalinity takeup of a variety of clays as a function of pH and as a function of the solution composition. We have reached the following conclusions: 1. 2. The base absorbed by the clays in magnesium-free sea water is very small. Thus, magnesium is the dominant cation in the alkalinity absorbing reaction. Montmorillonite clays absorb base more readily than kaolinite clays, but the capacities of different montmorillonites vary widely. 3. The addition of interlayers to the clays does not run reversibly on a time scale of a few hours. The clay-Mg(OH)2 system resembles the better known clay-water systems in displaying a distinct hysteresis between addition and removal conditions. We were fortunate to have Miss Joanne Groves from the faculty of the Chemistry Department at Portland State College associated with the clay chemistry study during the summer. 31 MARINE RADIOECOLOGY AND RADIOCHEMISTRY Radioecology of Oceanic Animals - Pearcy, Osterberg, Eagle, Tennant, Wyandt, Larsen During the past six months 268 samples of pelagic animals and 58 samples of benthic fishes have been radioanalyzed. These include individual species from various depths within the upper 1000 m and benthic fishes from as deep as 2800 m. Albacore tuna have been examined to establish trends in their gamma spectral composition over the past three years. Stable zinc analyses are being made on individual species. After study of sources of variation in zinc concentration and modification of analytical techniques, stable zinc analyses will be performed routinely. Zn 65 The data on seasonal, bathymetric, and day-night variations of in unsorted midwater trawl samples are being prepared for publication. Radioecology of the Benthos - Carey, Osterberg, McCauley, Hancock, Alspach, Larsen During this report period 174 samples, representing 53 animal species and 15 sediment types, have been radioanalyzed for gamma emitters. Because of the low levels of radionuclides present, samples are now being analyzed by multi-parameter coincidence counting (with anti-coincidence shielding) by R. W. Perkins, of Battelle-Northwest. Zinc-65 from the Hanford reactors is present in greater amounts in benthic communities from shallow water, but vari, 5s inversely with depth. Sediment-feeding organisms contain less Zn than carnivorous forms. Seasonal differences in Zn65 content are also being investigated. We plan to evaluate trophic level and depth variations of radioactivity through further joint efforts with the Hanford group. Radiochemistry - Osterberg, Cutshall, Cronin A 1 60-gallon coprecipitation apparatus (Figure 1) has been designed by Cronin and Osterberg. This apparatus enables us to detect the very low levels of chromium-51 introduced into Columbia River water by the Hanford nuclear reactors. As a result, we have been able to follow the Figure 1. Tex's Towers - 160-gallon epoxy-lined tanks used for copre cipitation. SS Columbia River plume at sea as far south as off Coos Bay, Oregon, (Science, in press). We have also used Cr51 as a timing device, as well as an indicator of plume waters. In Situ Sediment Probe - Cutshall, Osterberg, Jennings A new electrically-driven winch capable of holding 3000 m of conducting cable has been ordered. This winch will facilitate use of the probe for measuring radioactivity in marine sediment. Recent core samples have contained sufficient,artificial radionuclides to make such efforts desirable. Alpha Emitters in the Columbia River - Jennings, Osterberg While at Battelle-Northwest on an AEC summer fellowship, Mr. Jennings analyzed a number of marine and estuarine samples for alpha emitters. The highest levels of uranium-234-238 (865 dpm/kg) were found in sea cucumbers from the ocean bottom. The greatest amount of polonium-210 (13. 89 x 103 kpm/kg dry weight) was found in the stomach of a salmon caught off Newport, Oregon. Salmon eggs contained 395 dpm/kg dry weight The levels of alpha radioactivity in animals were very much greater than those in the river water or the reactor effluent. Radioactivity varied from 0. 033 dpm/liter Po210 in river water to 0. 051 dpm/liter Po210 in reactor effluent. The conclusion to be drawn from this work is that most of the alpha radioactivity in the samples measured was due to natural radionuclides. Animals appear to concentrate Po210 and U234-238 to higher levels than are found in the Columbia River. This work was carried out with instrumentation and facilities provided by Battelle-Northwest, Richland, Washington, under joint fellowship with the AEC. The guidance of Mr. Thomas Beasley is particularly appreciated. Dissolved Organics in Sea Water - Cronin, Osterberg Dissolved organics were removed from large volumes (up to 1100 gallons) of natural waters by solvent extraction. Samples collected at Astoria, Oregon, (river water) and at the Columbia Lightship (mostly sea water) are being analyzed at Battelle-Northwest Laboratories, Richland, Washington. Components of the dissolved organics are being identified using gas chromatography, infrared spectroscopy, nuclear magnetic resonance, mass spectroscopy, and other specialized techniques, Radioactive elements are being identified' using multiparameter coincidence spectros copy. This work, carried out in part on a Battelle-Northwest-AEC fellowship, is under the direction of Earl Martin and Dr. Lee Burger. Uptake of Radionuclides Benthic Am hi ods - Cross, Osterberg Benthic amphipods, collected at sea in traps from depths greater than 100 m, are being used in uptake and retention experiments currently carried out at Battelle-Northwest. These animals, which may prove to be a significant food source of bottom fishes, have been found to be durable laboratory organisms. Losses in collection and transportation some 300 miles inland to Hanford Labs have been less than 5%. This work, in progress, is financed in part by a Battelle-Northwest AEC fellowship under the direction of Drs. Dean and Nakatani. Chemistry of Chromium-51 - Cutshall, Osterberg Field and laboratory studies show that Cr51 introduced into the ocean by the Hanford reactors tends to remain in hexavalent form. Before Cr51 can be efficiently scavenged from sea water by coprecipi- tation with Fe(OH)3, it must be reduced to Cr III. The need for this step, prior to efficient recovery, demonstrates that much of the Cr51 in sea water must be Cr VI. BIOLOGICAL OCEANOGRAPHY Feeding Habits of Benthic Organisms - McCauley Stomach and intestinal contents of several species of invertebrates and one species of fish are being examined to determine feeding habits. Allocentrotus fragilis and Brisaster townsendi, both shallow water echinoids, appear to be unselective deposit feeders and are probably restricted in their diet only by the size of the particles in the sediment. The fish Coryphaenoides sp. , a deep-sea grenadier, appears to be a selective carnivorous feeder. This fish may swim up into areas well above the bottom since a number of pelagic animals have been found in its stomach. There is also evidence that at least part of its diet consists of benthic epifauna and, perhaps, infauna. Analyses of the stomach and intestinal contents of benthic fish are difficult. When such a fish is brought to the surface, its swim bladder expands, forcing the stomach to empty its contents and squeezing contents from the guts. At best, diet can only be inferred from hard parts of a few animals. A quantitative study of feeding habits is unlikely. Benthic Ecology and Systematics - Carey, McCauley, Alspach, Hancock The benthos cruises, undertaken during this period, yielded 10 quantitative Anchor-Box Dredge samples, 13 otter trawl samples, and 30 Aberdeen (Smith-McIntyre) bottom grab samples from the shelf, slope, and abyssal plain. Two radioecology cruises, joint with nekton and radiochemistry, yielded an additional 11 otter trawl and 19 Aberdeen grab samples Laboratory analyses of the collections continue. In addition to routine identifications and counts, studies on food sources of the fauna are underway. A quantitative 3-meter beam trawl has been built and will be tested soon. Studies on Reproduction of Benthic Invertebrates - Carey, Hufford Studies on the reproductive activity of the benthic fauna collected seasonally off Oregon are underway. The gonadal index of the sea urchin, Allocentrotus fragilis, is being measured to determine the 36 extent of its reproductive cycles. We plan to extend this research to deeper organisms to determine whether lower limits of cyclical reproductive phenomona exist. Benthic Fishes - Eagle, Pearcy Deep hauls have recovered two additional brotulids (Parabassogigas andis). Another species of snail-fish (Liparidae) Careproctus was .captured and has been sent to the U. S. National Museum for further identification. Coryphaenoides and Antimora continue to make up the bulk of'the fish collections from i ater deeper than 1000 m. Oceanic Trematode Studies - MCCauley, Eagle Support for oceanic trematode studies was terminated on 30 August 1965 with a good deal of the systematic work remaining to be completed. During this study 2080 trematodes were collected from marine fishes, 1378 of them foundin fishes from depths in excess of 1000 meters. All the specimens are now on microscope slides and have been assigned to tentative systematic positions. Further study will undoubtedly reveal that many of these are new species. Study will resume when support is available. Polychaete Distribution in Yaquina Bay - Carey, Morrison A study of the polychaete worm distribution in the lower part of Yaquina Bay, with special reference to Nephtys caecoides, was undertaken in July 1964. The samples were taken with a Smith-McIntyre grab s ampler. This study has now been completed. A total of 71 samples were collected at six stations. The animals were separated into their major taxonomic groups. The numbers, constant dry weights, and ash-free dry weights per square meter were determined for each group. The marine polychaete Nephtys caecoides exhibited a continuous distribution from offshore to a point approximately five miles into the estuary. An effort has been made to correlate this distribution with the known habits of this organism and the ecological conditions found in the estuary. sr Polychaetous Annelids of the Offshore Waters of Oregon - Carey, Hancock The study of the offshore polychaetous annelids from the Oregon coast is nearing completion. Anchor dredge samples from depths of 50, 100, 200, 600, 800, and 2800 m have been sorted and identified. Organic content of the sediments has been determined (Carey, 1965), and numerical counts by species have been made. The number of species found in a sample ranged from 5 to 55; total number of individuals per sample ranged from 20 to 1500. Approximately 140 species of 47 genera have been found to date. Non-quantitative otter trawl samples from these stations will also be identified to give the complete picture of the polychaetes present at each station. Biomass data will be collected to produce a more complete distributional picture of these organisms Dr. Donald Reish's collection of nearshore polychaetes has been loaned to us by Dr. Ivan Pratt for comparison purposes. After very close examination of this collection we found that only a small percentage of the species collected on or near shore occur in the offshore benthos. A small selection (25) of the unidentified specimens from our collection were taken to Dr. Olga Hartman of the Allan Hancock Foundation. This selection was found to include eight undescribed species and at least one undescribed genus. We plan to continue identifying the majority of specimens in our laboratory and return to Dr. Hartman's laboratory for assistance in the description of the undescribed specimens and the identification of more difficult specimens. Deep-Sea Fouling Studies - Tipper, McCauley Mr. Tipper has designed a rack for holding test panels to be placed on the ocean floor. Similar research is being conducted by the Navy at Port Hueneme, California. Mr. Tipper visited their laboratory and discussed mutual problems with them. His first testing rack was submerged from a fixed catamaran buoy on 28 September, but was lost. Two additional racks are under construction. Ecology and Distribution of Oceanic Animals - Pearcy, Coleman; Donaldson, Van Arsdale Studies of the seasonal and geographic distribution of oceanic animals in relation to their environment have been extended by 85 more midwater trawl collections and 44 meter net collections during the last quarter. Theses and papers summarizing the distributional data for the past three years are being completed. Dry weights of the major components of midwater trawl and meter net collections are being determined. The cruise of the YAQUINA to the southeast into central Pacific waters has permitted comparison of the fauna from two water masses. Of the 79 species of mesopelagic fishes collected on this special cruise, for example, 35 were not found in collections off Oregon. Ecology of the Ocean Shrimp, Sergeste.s similis - Forss, Pearcy The seasonal and geographic variations in abundance, growth rate, and catchability of S. similis is being examined from both meter net and midwater trawl collections. Euphausiids and Copepods - Hebard Identification of copepods and euphausiids has been completed. Data on species abundance is presently being subjected to statistical analysis for determination of species groups. Preliminary results show that the highest correlations occur between species groups from the Newport stations. Environmental relationships which affect species distribution are being examined. The features of greatest influence appear to be upwelling, fresh water runoff, the Davidson Current, and the California Current. Medusae, Siphonophores and Chaetognaths - Renshaw The medusae, siphonophores, and chaetognaths from the 200 m meter net tows have been analyzed. The abundance and size-frequency distribution of the chaetognaths have been tabulated, and further analysis to determine seasonal dominance of species within chaetognath populations is now in progress. Medusae and siphonophores have been identified, and their abundance and seasonal occurrence recorded. Further analyses of these groups will indicate their importance as predators in the seasonal plankton cycle. Oceanic Amphipods - Van Arsdale Five families of the hyperiid amphipods from meter net collections along the Newport hydrographic line have been examined. Opening- 39 closing meter net collections to 1500 m at NH-50 are now being examined. From these data the seasonal, vertical, and horizontal distributions will be determined. Salps - Hubbard, Pearcy The species composition, seasonal occurrence and geographic variations in distribution of salps has been examined from collections made during the past three years. Attempts to correlate occurrence of species with wind stress is in progress. Marine Microbiology - Morita Identification of the various types of bacteria isolated from core material has been initiated. This sediment material was taken from the Philippine Trench and the Challenger Deep last December. The sediment, obtained by coring, was from depths up to 10, 808 meters. We have begun studies in four areas: (1) isolation, characterization, and the enzyme kinetics of glucose-6-phosphate, (2) the mechanism of alpha ketoglutarate formation, (3) the identification of phospholipids, and (4) the characterization of the low temperature of growth. The first two studies deal with the possibility of the existence of an abnormally heat labile enzyme(s) in an obligate psychrophile. The third involves the permeability control of an obligate psychrophile when exposed to temperature above its maximum temperature of growth. The fourth study is aimed at determining why cells can grow at low temperatures. Energy and Element Transfer in the Lower Marine Food Web - Small, Hebard, Bergeron, FowlerRespiratory metabalism of euphausiids (Euphausia pacifica Hansen and Thysanoessa spinifera Holmes) collected off Oregon in winter has These respiratory rates, together with estimates of been anabolism (such as growth rates), are used to assess gross production (assimilation) rates, which themselves are necessary to understanding energy transfer in food webs. The study has so far been limited to winter months because of known seasonal differences in respiratory metabolism in other pelagic marine crustaceans. The study will be expanded eventually to include data from the spring and summer months and the effects of pressure, temperature, and reproduction on respiration. 40 A Gilson differential respirometer was used to assess respiration rates. Checks and certain special experiments employed Winkler titration techniques and a Fisher gas partitioner. Our experiments lead us to the conclusion that, in general, water temperature and body size are the two factors most significantly affecting euphausiid respiration during winter off Oregon. Furthermore, over the weight range of animals used, Q10 does not change with size, and no short term temperature acclimation takes place (Figure 1). 2.0 1.8 1.6 1.4 3 V rn E 010 = 2.1 1.2 1.0 N. 0 0.8 0.6 0.4 0.2 0 5 10 TEMPERATURE (°C) Figure 1. Average weight-specific respiration of euphausiids at three temperatures, and calculated Qi n, 15 41 Respiration (R) can be expressed as a function of body weight (W): log R = a + b log W where R is in µl 02/hr, W in mg dry weight, and a and b are constants. The coefficient b is not significantly different at 5°_C, 10°C, or 15°C, indicating no alteration of respiration with increasing size (Figure 2). Thus, weight-specific respiration (R/W) does not vary with size. It does vary with temperature, however, to yield a Q10 of 2.11. 24 2.2 EUPHAUS/ID RESPIRATION 2.0 1.8 / 1.6 2 / / / / // , I x I 5°C °---o log R0.962 logW-0.102 r=0.943 10°C - IogR=0.152+0.935 IogW r-0.960 .6 0 15°C x---x IogR=0.083+1.141 IogW .4 r=0.921 0 4 .6 .8 1.0 1.2 1.4 1.6 18 log dry wt (W) Figure 2. Scatter diagram and linear regression of log respiration on log dry weight for euphausiids at three temperatures. We are doing other experiments to investigate the transfer of zinc-65 in "pollution" concentrations through food webs, and to test the effectiveness of Zn65 as a measure of metabolic activity. Experiments on direct uptake, retention, and loss of Zn65 from the water by euphausiids suggest that a large amount of this isotope is physically adsorbed. However, a measurable amount of metabolic uptake also occurs. Molting by the animals increases the "effective uptake" of Zn65 by presenting "new" surface area for absorption and adsorption after each molt. Furthermore,the radioactive molts themselves may speed up the delivery time of radio contaminants to the sea floor by sinking, or may introduce radioactive contamination into other food webs if they are eaten. Experiments using a phytoplankton population labeled with Zn65 as food for euphausiids indicates that concentration of radionuclides is more efficient through the food chain than through direct uptake from water. Quantitative assessment of these ideas is being made. Phytoplankton Ecology I - Curl, Small, Hardy, Glooschenko In situ measurements of primary production and chlorophyll concentration were made 25 miles west of Newport, Oregon, between April 1962 and June 1964. Assimilation ratios (mg C/hr/mg Chl a) were plotted against depth in meters (Figure 3) to illustrate the variability of these values with depth and time of day. Assimilation ratios grouped by season and plotted against percent incident radiation (a function of depth) showed that in winter, and in the morning and evening hours during other seasons, production per unit of chlorophyll was approximately linear with decreasing %Io down to about 25% I-, (Figure 4). At midday, the relationship was curvilinear, and the absolute values were higher. Very high assimilation ratios were obtained for two dates (19 August 1962 and 3 June 1964). The relationship of these ratios and I. is somewhat different from the usual situation. The high assimilation ratios are thought to be associated with recently upwelled water. When we plotted assimilation ratios at light saturation against daily incident radiation (except values for 19 August 1962 and 3 June 1964) we found that the ratios are not a function of Io, though they varied from about 6-12 mg C/hr/mg Chl a over the range of intensities The mean value plus or minus the 95% confidence interval was 8. 6 + 1. 3. We feel that this value is a valid assimilation ratio to use in equations for predicting production rates from chlorophyll and light data in waters off Oregon. Our experiments and a review of the literature suggest that assimilation ratios of 0 - 3 are indicative of nutrient depletion; ratios between 3 and 5 are indicative of borderline nutrient deficiency, and ratios between 5 and 10 are indicative of nutrient-rich waters. We conclude that empirically determined assimilation ratios, derived from as near-natural experiments as possible, should be used in production equations. 43 mg C / hr / mg Chl 0 1 2 3 4 0 mg C /hr/mg Chls mg ChI2 /m' 5 6 7 B 9 10 I I I I I I 1.0 2.0 3.0 0 3 4 6 5 mg Chls /m3 8 7 9 . L_1_ 10 I I0 20 30 24 MARCH 1963 7I LANGLEYS /DAY 40 I AUGUST 1963 215 LANGLEYS /DAY EUPHOTIC DEPTH (1%) 34m EUPHOTIC DEPTH (1%) 40m .,0700-0900 50 8. 1330-1400 A.0530-0730 8.0800-1000 C-1030-1230 0 0 I0 20 30 8 APRIL 1964 300 LANGLEYS /DAY 40 50 16 NOVEMBER 1962 SI LANGLEYS /DAY EUPHOTIC DEPTH(I%) 50m EUPHOTIC DEPTH (1%) 35m A-0700-0900 0.0850-1050 0.1115-1330 D-1400-1600 9-0700-0900 0.1300-1500 o---. to20 30 H 40 w 50 18 APRIL 1962 318 LANGLEYS /DAY EUPHOTIC DEPTH (1%) 37m A-0600-0800 8.1200-1415 C1700-1930 9 DECEMBER 1962 42 LANGLEYS /DAY EUPHOTIC DEPTH (1%) 60m 4.750-980 8-1410-1610 W 20 30 10 MAY 1962 14 JANUARY 1963 40 308 LANGLEYS /DAY EUPHOTIC DEPTH (1%) 37m 28 LANGLEYS/DAY 8.1430-1700 50 EUPHOTIC DEPTH (1%) 48m AOe30-1030 8.1400-1600 0 10 20 30 - / 24 MAY 1963 126 LANGLEYS/DAY EUPHOTIC DEPTH (1%) 55m 40 8-1145-1345 50 II FEBRUARY 1963 140 LANGLEYS /DAY EUPHOTIC DEPTH (1%) 50M 4.0745-0945 8-1355-1555 0 10 20 30 3 JULY 1963 364 LANGLEYS / DAY EUPHOTIC DEPTH (1%) 52 m 40 50 Aoezo-oezo enro-a13 cleoo-two Figure 3. Assimilation ratios and chlorophyll a versus depth. 2.0 3.C LI 1.0 mg C/mg ChIq 6 In- N- O 100 S 7 12 13 90 80 0 70 Ob 60 0 MARCH-APRIL- 3 JULY 1963 0 0 0 MAY 1 AUGUST 1963 50 40 30 .\ 20 I0 0 N OD - 100 40 It 10 22 24 26 28 90 80 70 AUGUST 1962 UNE 1964 60 50 2 oo 40 30 20 I0 0 Figure 4. Assimilation ratios vs percent incident radiation. NOVEMBER-DECEMBER- JANUARY-FEBRUARY Phytoplankton Ecology II - Small, Curl, Hardy Examination of the coefficient of white light extinction (k) of sea water provides a rough assessment of the distances from shore to which coastal runoff and river discharge exert an effect on "true" sea water. Some effects of upwelling can also be ascertained by examining k. The effects of chlorophyll concentration on k, as differentiated from effects of non-chlorophyllous detritus and silt, can be examined by plotting k against average chlorophyll a concentration per cubic meter. Closeness of fit of the points to a line fitted by the least squares method provides one estimate of the effect of chlorophyll. Comparison of measured points to the line described by the equation k= 0. 4 + 0. 88C + 0. 054 00.67 can also be made. This is the equation suggested by Riley that describes k as a function of mg Chl a/m3(C). The constant 0. 04 is the k of "true" sea water with no chlorophyll. Interesting considerations arise in the differences and similarities of precition of the same k by the least squares method andRiley's equation. Analysis of these data is currently being made. Snow Algae - Curl, Hardy, Iverson Snow samples from many alpine and arctic areas in Oregon, Washington, and Montana have been examined and found to contain cryobionts. Twenty-three genera of algae, including three possibly new species have been found. Eight genera are now growing in mixed culture and four species in unialgal culture in a controlled environment growth chamber. This device can simulate diel variation-in light and temperature. Currently we are attempting to duplicate mid-summer conditions on a snow field at 9000 ft. altitude, using crushed, frozen Britol's medium as the "snow. " The next series of experiments is designed to measure the effect of light and temperature variations on the growth of cultured algae. Vertical Distribution and Migration Studies - Pearcy, Forss, Laurs, Renshaw, Van Arsdale A report on our study on the vertical distribution, migration, and avoidance of mesopelagic fishes collected with an Isaacs-Kiddmidwater trawl with an opening-closing cod-end device has been accepted for publication. A similar paper on oceanic shrimps is in preparation. Opening-and-closing meter net samples are also providing data on the depth distribution of chaetognaths, amphipods, euphausiids, and other z ooplankton. Plankton Inventories at Yaquina Bay - Frolander We continued to collect samples weekly from four locations in Yaquina Bay. In addition to Clarke-Bumpus tows, we also collected surface and bottom water samples for determining temperature, salinity and dissolved oxygen. A summary of the data collected during this period appears in Table I. All samples have been accessioned into ledgers, catalogued in card files, and deposited in chronological accessioning cases. Seventy samples collected between October 1964 and February 1965 have been analyzed by the vacuum displacement method. The data obtained from 45 of these analyses have been processed by computer. Table I. Summary of Data Collected at Yaquina Bay Sampling Days Clarke-Bumpus Tow - #6 mesh Clarke-Bumpus Tow - #12 mesh Water samples (for measurement of temperature, salinity, and dissolved oxygen) 19 65 64 148 47 EDUCATIONAL PROGRAM Five students completed the requirements for the Ph. D. in oceanography. Five more completed work on an M. S. in oceanography. These students, their thesis titles, and their major professors are listed below. Chiburis, Edward F. - Ph. D., Geophysical Oceanography Thesis Title: Crustal Structures in the Pacific Northwest States from Phase-Velocity Dispersion of Seismic Surface Waves. Major Professor: Peter Dehlinger Ingham, Merton C. - Ph. D., Physical Oceanography Thesis Title: The Salinity Extrema of the World Ocean Major Professor: Peter K. Weyl Lane, Robert K. - Ph. D. , Physical Oceanography Thesis Title: Climate and Heat Exchange in the Oceanic Region Adjacent to Oregon Major Professor: Wayne V. Burt Maloney, Neil J. - Ph. D. , Geological Oceanography Thesis Title: Geology of the Continental Terrace off the Central Coast of Oregon Major Professor: John V. Byrne Neal, Victor T. - Ph. D. , Physical Oceanography Thesis Title: A Calculation of Flushing Times and Pollution Distribution for the Columbia River Estuary Major Professor: June G. Pattullo Haight, Janet J. - M. S. , Oceanography (Microbiology) Thesis Title: Some Physiological Studies on Cells of Vibrio marinus Grown at 4°C and 15°C. Major Professor: Richard Y. Morita Karinen, John F. - M. S. , Biological Oceanography Thesis Title: Succinic Dehydrogenase Activity in Mesopelagic Oceanic Fishes Major Professor: Herbert C. Curl, Jr. Odegard, Mark E. - M. S. , Geophysics (Physics Department) Thesis Title: Gravity Interpretation Using the Fourier Integral Major Professor: Joseph W. Berg, Jr. Schatz, Clifford E. - M. S. , Physical Oceanography Thesis Title: Source and Characteristics of the Tsunami Observed Along the Coast of the Pacific Northwest on March 2, 1964. Major Professor: June G. Pattullo Thornton, Edward - M. S. , Physical Oceanography Thesis Title: Internal Density Currents in a Density Stratified Reservoir During Withdrawl. Major Professor: Robert L. Smith Summer Program for Science Teachers - Kulm Two courses in oceanography were offered during the summer: Dc 432S, Physical Oceanography, and Oc 561S, Geological Oceanography. The courses were established primarily as an introduction to oceanography for high school science teachers. Credit received in these courses cannot be applied to a major in oceanography. Ten students were enrolled in each of the courses. MARINE SCIENCE CENTER Dedication The O. S. U. Marine Science Center, consisting of the laboratory, the service building, and the causeway and dock for the research vessel, was dedicated on 19 June 1965. Mrs. Cecelia P. Galey, Chief of the Northwest Division of the Area Revelopment Administration, presented the building at the dedication ceremony. President J. H. Jensen spoke on behalf of the University, Mr. J. I. Hunderup on behalf of the Oregon State System of Higher Education, and Mr. Warne Nunn on behalf of the Office of the Governor. As part of the dedication observance, the laboratory building and the R/V YAQUINA were opened to the public. More than 6500 visitors examined these facilities on 19 and 20 June. Aquarium and Museum The central section of the laboratory building, housing a 200-seat auditorium, a meeting room, a marine aquarium, and marine science exhibits, is devoted to public activities. Since its opening,this area has been in continual use by the general public and scientific, educational, civic,and school groups. The aquarium and museum have been visited by 25, 000 people since the building has been open. The Marine Science Laboratory, Newport, Oregon. 50 The marine aquarium is now stocked with common Oregon coastal fishes and invertebrates. The first set of exhibits for the museum has been completed. These exhibits, planned by members of the Department of Oceanography staff and executed under the direction of Professor Mark Sponenberg of the Department of Art, illustrate major features of the oceans and their scientific study by means of text, models, and illustrations. Each exhibit is designed with simplicity and forcefully communicates one major idea. The exhibits now in place are the following. 1. Marine exploration. Representative marine stations and historic voyages of major oceanographic expeditions are shown on a large map of the world. Photographs of famous research vessels complete this display. 2. Structure of the earth. The structure of the earth, especially the earth's crust and continental shelf, is the subject of another panel. The display utilizes the Oregon coast as an example. Coastal geology. Coastal geology and the factors influencing the formation of coast lines are demonstrated by this exhibit. Changes in Oregon's coastline with time are featured. 3. 4. Tides. The tides, their causative forces, prediction, and measurement are illustrated with models. An operating tide gauge which continuously records the tidal changes in Yaquina Bay is part of this exhibit. Oceanic circulation. Oceanic circulation patterns and their causes is the subject of this exhibit. Both basic principles and circulation patterns in the sea are'illustrated-. 5. 6. Estuaries. The nature of estuaries is demonstrated by an exhibit which takes for its example Yaquina Bay's physical and biological features. 7. The food chain. The basic ecological concept of food chains is the theme of an exhibit on energy and life in the sea. The relation of upwelling to coastal productivity and the food relations of common coastal animals are illustrated. Traveling exhibits on oceanographic subjects are regularly housed in the Museum along with permanent exhibits. Displays on noises of biological origin in the sea and the oceanographic features of Antarctic waters were loaned by the U. S. Naval Oceanographic Office. 51 East Research Wing The east wing of the laboratory is devoted to teaching and research in oceanography and marine zoology. This area is under the direction of Dr. Joel W. Hedgpeth, who joined the OSU staff as Professor of Biological Oceanography in June 1965. Offices and both conventional and sea water laboratories are provided in the east wing. An NSF grant provided funds for completion of the service building interior, laboratory furniture , and certain specific equipment for the east wing. This equipment includes major pieces of apparatus such as an autoclave, recording spectrometer and refrigerated centrifuge for the common use of the research groups working in the wing. Since its opening, several programs of the Department of Zoology have become active in the Marine Science Laboratory. Drs. Ivan Pratt and Ingemar Larsen and several graduate students use one of the sea water laboratories for studies on the 'trematode parasites of marine fishes. Dr. Austin Pritchard and his graduate students also utilize these facilities for their studies on the physiology of marine animals. Studies on the early development of sea urchins and mussels by Dr. Patricia Harris and her students are also being carried on using the sea water laboratories. The East Wing of the Marine Science Laboratory has small dormitories for men and women, These accomodations have made it feasible for groups of workers from the Zoology, Oceanography and other departments of the University to stay at the laboratory for periods of several days while collecting materials and data on the coast, 'using the facilities of the laboratory, or in connection with work being done on the R/V YAQUINA. Projects at the Marine Science Laboratory Pycnogonids - Hedgpeth. Studies on the systematics and zoogeographic distribution of Pycnogonids collected during oceanographic explorations of the Antarctic have been transferred to the Marine Science Laboratory from Dr. Hedgpeth's former laboratory at Pacific Marine Station. These studies are monographic in scope. Two sections are now ready for publication in the Antarctic Research Series on the biology of the Antarctic. 52 Ecology of E. mucronata - Hedgpeth and Eikenberry. Studies on the ecology o Euzonus mucronata, a common worm of sand beaches, were begun in California and have now been transferred to the Newport area. The factors controlling the placement of the band of these worms on the beach, and the horizontal and vertical movements of the band are being studied. This work is part of a program on Marine Ecology supported by an Office of Naval Research contract (Nonr 3002(02), Project 104-626). Opisthobranch gastropods - Gonor. Studies on Opisthobranch gastropods, begun elsewhere, have been continued at the Marine Science Laboratory. Studies on the systematics and zoogeographical distribution of tropical opisthobranchs are based on collections made in the past year in Costa Rica and on Cruise 6 of Stanford University's TE VEGA expeditions to the tropical west and central Pacific. The collections have been rebottled, sorted, and arranged for use. A study of the functional anatomy and evolution of the opisthobranch gill and pallial cavity, largely completed elsewhere, is being finished using material from the collections mentioned above. The manuscript and the large number of illustrations required are in preparation. Another paper on predator-prey relations in prosobranch gastropods, based on field observations and experiments done while on the TE VEGA expeditions, is also in preparation. Chemistry analysis group - Erdmann, Haag. A sea water chemistry analysis group, organized by the Department of Oceanography, is housed in the east wing of the Marine Science Laboratory. Two chemists, D. Erdmann and C. Haag, perform all routine sea water analyses for the Department of Oceanography research programs. This centralizes salinity, oxygen, phosphate, nitrate, nitrite and silicate analyses and eliminates the transportation of cases of sea water samples to Corvallis. Physical Oceanography - Young. Our major effort has been in obtaining and testing equipment for the automatic measurement of temperature, current speed, and current direction. Satisfactory equipment was installed on or near oil drilling barges anchored off the Oregon coast on the continental shelf. Many useful measurements were made. More detailed descriptions of the data appear in the Physical Oceanography section of this report. RESEARCH VESSEL YAQUINA The YAQUINA has now completed one full year of operation. She has traveled nearly 25, 000 miles and spent 247 days at sea in the full year since she was first put in operation on 10 October 1965. Figures 1 through 4 show the time spent at sea and the track of each cruise taken through September 1965. AT SEA TIME 1964 1965 DEC JAN FEB MAR APR MAY JUNE Geology JULY Geophysics 4 Geophysics 4 SEPT AUG. Beeteoe 1 Netton 2 EGe00111e46 i 2 Benthos Geology 4 Phys-e/ C^em stry B'ology Gtology Geology 6 12 4 Benthos Mydro 6 Benthos Hydro 5 NOW. I 12 Senm'C 4 Benthos 13 4 13 Geophysics 6 16 incnTesi 1 Drogue 4 2 Drogue Hydro 16 Pnyto 19 20 21 Drogue Neeton 6 Gosh House Nest." Geophysics Geophysics 23 wmcn test S I Phy s'os 24 8ology 26 6 27 26 Nekton fi Geology Oro que 7 6 Geology 3 G 14 IS Figure 1 14 2 19 20 24 20 22 26 27 26 29 Geophysics 30 i eopnysletI 25 B Benthos Nekton 29 25 8 10 Nes on 31 4 Benthos Chemistry 25 TOTAL Geophysics y 3 22 30 Gemo9r 5 Geology 15 17 Drogue 17 ; 5 14 0 Phyro 26 Time at sea, October 1964 - September 1965. 31 25 54 OCTOSER,1984 NOVEMBER, 1964 L. p pAUTIGL MlE6l[ /t b ISOONINIS , AI cn `1 O JANUARY, 1965 I6° FEBRUARY, 1965 AaTORIA 49° i NEWPORT L. I G f IM 43 I....I 0 BRCOKINA$ SNOONINSS ME. L4 11 Ee NAUTICAL MILES NAUTICAL MILES ONE CAL PHYSICAL BIOLOGY a . GEOLOGY - - - GEOPHYSICS CHEMICAL Figure 2. Cruise tracks of R/V YAQUINA, October 1964 - February 1965. I MARCH, 1965 APRIL, 1965 WASH. 45- 6=- C HEY. / L 1 re C CALIF. C 13^ C so- L.... ® GEOPHYSICAL GRAVITY RANG! 0 ES NAUIICAL MILE' I , . . . ISO 0 NAUTICAL MILES 0 0 0 ONE C C MAY 1-20, 1965 +e° MAY 21-30, 1965 C I5° C 44° "I I C I....... 0 100 NAUTICAL MILES BROOKINOS !2° 11 I111 NI111111111II, PHYSICAL BIOLOGY a GEOLOGY I - - - GEOPHYSICS CHEMICAL Figure 3. ONf. _----f, Al_ll MI Cruise tracks of R/V YAQUINA, March 1965 - May 1965. 111 56 C JULY, 1965 4e G t-------- 7-7" LONGITUDE ISO-40' 4100 4M.) L./ 43. OREGON 1 . . .1 ED 0 NAUTICAL MILES CALIF SNDONINOG r ..4... A°' 91 ... \ SEPTEMBER, 1965 AUGUST, 1963 ..........,.. BIOLOGY Figure 4. I.. it ..........11. PHYSICAL B CHEMICAL GEOLOGY ... - - - GEOPHYSICS Cruise tracks of R/V YAQUINA, June 1965 - September 1965. ONE 7 57 STAFF Dr. Joel W. Hedgpeth, who joined our staff in June as Professor of Oceanography and Resident Director of the Marine Science Laboratory, received his Ph. D. from the University of California at Berkeley. He served as a Marine Biologist with the Texas Game Fish and Oyster Commission from 1945 to 1947, as an Assistant Research Oceanographer at the Institute of Marine Science at the University of Texas from 1947 to 1949, and as Associate Marine Biologist at Scripps Institution of Oceanography from 1951 to 1957. Before coming to Oregon State, he was the Director of the Pacific Marine Station at Dillon Beach, California. Dr. Hedgpeth has served on numerous panels and committees. He is currently a member of the Panel for Systematic Zoology of the National Science Foundation, and the Advisory Panel of A. I. B. S. for the Office of Naval Research. He is a member of numerous societies and was president of the Western Section of the American Society of Limnology and Oceanography. He has published more than 75 papers on ecology, hydrobiology, and pycnogonids. He is now preparing a monographic treatment of the distribution of deep sea pycnogonids. Mr. Norman Cutshall has been appointed Instructor in Oceanography. He received his B. S. in Geology and his M. S. in General Science from Oregon State University. His dissertation on the chemistry of chromium in sea water should be completed within the next several months. Mr. Cutshall's research interests are in the chemistry of radionuclides in an aquatic environment. He directly supervises laboratory and field studies of students pursuing research problems in geochemistry and the chemistry of radionuclides. Mr. J. Frank Hebard, Instructor in Oceanography, joined the staff in September. Mr. Hebard received his B. A. in Biology from San Jose State College and his M. S. in Biological Oceanography from the University of Washington. He expects to complete the requirements for a Ph. D. in oceanography at Oregon State University in the near future. Before caning to Oregon State, Mr. Hebard was employed as a fisheries research biologist with the U. S. Fish and" Wildlife Service. His research interest is in the geographic and seasonal distribution of oceanic zooplankton. Dr. Wayne V. Burt spent eleven weeks in Europe during March, April and May. During this time he visited most of the oceanographic laboratories and many of the marine biological laboratories in Western Europe with special emphasis on the laboratories in Germany, England, and France. The primary purpose of the trip was to learn first hand about all of the on-going research programs on air-sea interaction. The only concentrated large-scale program on air-sea interaction is the one directed by Professor K. Brocks at the University of Hamburg. Dr. P. Sheppard at Imperial College, London, has an excellent program on a smaller scale. The rest of the programs are just getting started, have lapsed, or are relatively small programs. Dr. Robert L. Smith began a year's leave of absence in August. The recipient of a NATO fellowship for postdoctoral study, he is working with Dr. John Swallow at the National Institute of Oceanography in England. They are particularly interested in the use of neutrally buoyant floats (Swallow floats) for measuring ocean currents. 59 VISITING SCIENTISTS April Dr. Masashi Yasui, Maizuru Marine Observatory, Japan. Dr. J. N. Carruthers, National Institute of Oceanography, England. Visiting Lecturer in Oceanography May Dr. F. A. J. Armstrong, Plymouth Laboratories, England. "Automated Analyses of Sea Water" Dr. John Kanwisher, Woods Hole Oceanographic Institution, Massachusetts. "Thermal and Respiratory Physiology of Whales and Porpoises", "Ecology of Salt Marshes" Professor Victor Vacquier, Scripps Institution of Oceanography, "Magnetic Field and Geothermal Flow Measurement over the Oceans" June Dr. Theodore Smayda, Naragansett Marine Laboratory, University of Rhode Island July Mr. Harold Hess, U. S. Bureau of Mines, Marine Mineral Technology Center, Tiburon, California August Dr. Halvor H. Cristianson, University of Michigan Medical School Mr. Earl S. Herald and Mr. Robert P. Dempster, Steinhart Aquarium, San Francisco, California September Dr. Donn S. Gorsline, Department of Geology, University of Southern California Dr. Paul Bowman, National Institutes of Health Dr. Frances Allen, Systematic Biology, National Science Foundation Dr. Denis Crisp, Director, Marine Sciences Laboratory, University of North Wales, Menai Bridge, Anglesey, Wales. "Settlement Behavior of Marine Invertebrate Larvae" Dr. Naoichi Inoue, Faculty of Fisheries, Hokkaido University, Japan. "Physical Oceanography at Hokkaido" Dr. Richard S. Bader, Program Director for Oceanography, National Science Foundation Dr. I. E. Wallen, Assistant Director for Oceanography, Smithsonian Institute Soviet Oceanographic Delegation: Boris V. Shekhvatov, Head, Institute of Oceanology, USSR, Academy of Sciences Anatoley I. Simonov, Director, State Oceanographic Laboratory, Maine Directorate, Hydrometeorological Services. Aleksander I. Sorokin, Hydrographer, USSR Hydrographic Service, Leningrad Arkody G. Kolesnifov, Head, Marine Physics Institute, Sevastopol Sergey I. Potaychuk, All Union Institute of Fisheries and Oceanography, Moscow. Viktor G. Neyman, Junior Science Officer, Academy of Sciences, Oceanology Institute (Interpreter) Robert S. Dietz, Science Escort, U. S. Coast and Geodetic Survey Edward D. Wolski, Official U. S. Interpreter Mr. George Reik, Battelle-Northwest, Hanford, Washington Mr. Dave Robertson, Battelle- Northwest, Hanford, Washington Biology Colloquium Dr. McCauley was the general chairman of the 26th Annual Biology Colloquium held at Oregon State University on 23 and 24 April 1965. This meeting dealt with the general topic of Host-Parasite Relationships and was led by Dr. Justus F. Mueller of the Upstate Medical Center of the State University of New York at Syracuse. Six distinguished parasitologists from throughout the United States participated in the program which was attended by more than 150 persons, 49 of them from out of state. A talk by Dr. Harold W. Manter of the University of Nebraska dealt with parasites of fishes as biological indicators of recent and ancient conditions in the seas. Proceedings from these meetings are now in galley proof and should be published shortly. 61 PUBLICATIONS AND PAPERS Publications Albright, L. J. , and R. Y. Morita. Temperature-hydrostatic pressure effects on deamination of L-serine by Vibrio marinus, an obligate psychrophile. Bacteriol. Proc. p. 20. Berg, J. W. , Jr. , and J. V. Thiruvathukal. Gravity base station network, Oregon. J. Geophys. Res. 70(14): 3325-3330. Berg, J. W. , Jr. , and G. E. Papageorge. Elastic displacement of primary waves from explosive sources. Erratum, Bull. Seis. Soc. Am. 54(3): 653-654. Bodvarsson, Gunnar. Some considerations on the optimum production and use of Geothermal energy. of water resources. NATO Symposium on optical use Burton, S. D. , and R. Y. Morita. Kinetics of enzyme reactions and synthesis in obligate psychrophilic bacteria. Bacteriol. Proc. p. 20. Morphometry of Crater Lake. Byrne, John V. Limnol. Oceanogr. 3(10): 462-465. Byrne, John V. , N. Maloney and G. Fowler. A sedimentary model of the continental margin off Oregon. (Abstract) Bull. Amer. Assn. Petrol. Geol. 49: 336-337. Carey, Andrew G. Preliminary studies on animal-sediment interrelationships off the central Oregon coast. Oc. Sci. and Oc. Engr. 1: 100-110. Chiburis, E. F. P. Dehlinger, and W. S. French. The Tacoma earthquake of April 29, 19 65. The Ore Bin, 27: 99 -100. , Dehlinger, Peter, E. F. Chiburis, and M. M. Collver. Local traveltime curves and their geologic implications for the Pacific northwest states. Bull. Seism. Soc. Am. , 55: 507-607. Eagle, Rodney J. , and James E. McCauley. Collecting and preparing deep-sea trematodes. Turtox News, 43: 220-221. Gonor, Jefferson J. Predator-prey reactions between two marine prosobranch gastropods. Veliger, 7(4): 228-232. 62 Haight, J. J. , and R. Y. Morita. Physiological differences between cells of Vibrio marinus grown at 4° and 15° C. Bacteriol. Proc. p. 20. Haight, R. D. , P. Langridge, R. Y. Morita and R. R. Becker. Leakage of cellular materials from Vibrio marinus induced by moderate temperatures. Bacteriol. Proc. p. 30. (1965). Morita, R. Y. , and L. J. Albright. Cell yields of Vibrio marinus, an obligate psychrophile, at low temperature. Can. J. Microbiol., 1 1 : 221 -227. Morita,- R. Y. , and S. D: Burton. Filamentous appendages of Thiothrix. Ziet. fur Allegemeine Mikrobiologie. 5: 177-179. Morita, R. Y. Effect of hydrostatic pressure. Chapter 22. pp. 551-559. In: Ainsworth and Sussman (ed.). The Fungi. Vol. 1 (1965) Academic Press. Neshyba, Stephen and D. E. Amstutz. Graphic aid for geostrophic computations from vertical sections. Deep-Sea Res. , 12: 369-371. Odegard, Mark E. , and Joseph W. Berg, Jr. Gravity interpretation using the fourier integral. Geophys. 30(3): 424-438. Radioactivity from the Columbia River. Osterberg, C. Oc. Engr. Symposium. , 2: 968-979. Oc. Sci. and Park, Kilho. Gas chromatographic determination of dissolved oxygen, nitrogen and total carbon dioxide- in sea water. J. Oc. Soc. of Japan, 21(l): 28-29. Park, Kilho. Total carbon dioxide in sea water. J. Oc. Soc. Japan, 21(2): 54-59. Park, Kilho, Yasuo Miyake and Yoshio Sugiwa. Effect des matieres carbonatees sur la conductivitie' electrique de l'eau en mer 2(2): 136-138. profonde. La Mer, Park, Kilho and Wayne V. Burt. Electrolytic conductance of sea water and the salinometer. J. Oc. Soc. Japan, 21(2):.69-80. Addendum: 21(3): 124-132. Pearcy, William G. Species composition and distribution of pelagic cephalopods from the Pacific Ocean off Oregon. Pacific Science. 19: 261-266. 63 Pearcy, William G. Distribution of oceanic cephalopods off Oregon, U. S. A. Proc. XVI Int. Congress Zool., 1: 69. Pearcy, William G. , S. L. Meyer, and Ole Munk. A 'four-eyed' fish from the deep-sea: Bathylychnops exilis Cohen, 1958. Nature, 207: 1260-1262. Pytkowicz, R. M. Oceanogr. , Calcium carbonate saturation in the ocean. Limnol. 10(2): 220-225. Mesecar, R. M. A solar and long-wave radiation measuring system for shipboard use. Conf. Oc. Sci. and Oc. Eng., 1:14-17. Pattullo, June G. and Warren Denner. Processes affecting sea water characteristics along the Oregon coast. Limnol. Oceanogr. , 10(3): 443. Pattullo, June G. , R. Smith and R. Lane. An investigation of an early stage of upwelling along the Oregon coast. Journal Geop. Res. Weyl, Peter K. On the oxygen supply of the deep Pacific Ocean. Oceanogr. , Limnol. 10(2): 215-219. DATA REPORTS Schatz, C. E. , and Peter Dehlinger. Oregon State University Seismological Bulletin No. 5 (July 1 to September 30, 1964), Data Report No. 19, Department of Oceanography, Oregon State University, Corvallis. August 1965. 7 pp. Gallagher, J. N. , and Peter Dehlinger. Oregon State University Seismological Bulletin No. 6 (October 1 to December 31, 1964), Data Report No. 20, Department of Oceanography, Oregon State University, Corvallis. August 1965, 7 pp. 64 Papers Submitted Berg, J. W. , Jr. , K. L. Cook and D. Lum. Seismic and gravity profile across the Northern Wasatch Trench, Utah. Geophys. Berg, J. W. , Jr. , and L. Timothy Character of refracted arrivals. Long. J. Geophys. Res. Carey, Andrew G. Energetics of Long Island Sound benthos- I: utilization of sediment. Bingham Bull. (accepted) oxygen Carey, Andrew G. , Jr. , W. G. Pearcy, and C. L. Osterberg. Artificial radionuclides in marine organisms in the Northeast Pacific Ocean off Oregon, U. S. A. , (Abstract) International Atomic Energy Agency Symposium. Carey, A. G. , Jr. , and D. R. Hancock. An Anchor-Box Dredge for deep sea sampling. Deep Sea Res. (In press) Cronin, John T. and Charles Osterberg. Shipboard chemistry of large sea water samples. Anal. Chem. Cross, Ford A. and L. F. Small. Copepod indicators of surface water movements off the Oregon coast. Limnol. Oceanogr. Variations in photosynthetic assimilation numbers in natural marine phytoplankton communities. Limnol. Curl, Herbert and L. F. Small. Oceanogr. Kulm, L. D. , and J. V. Byrne. Sedimentary response to hydrography in an Oregon estuary. Bull. Am. Assn. Petrol. Geol. McCormick, J. Michael. Some aspects of the ecology of hydroids off Oregon. Northwest Science. (in press) Morita, R. Y. Psychrophilic marine bacteria. Marine Biol. and Oceanogr. An Annual Review. G. Pearcy. Temperature studies on lactic and malic dehydrogenases from a mesopelagic fish (Poromitra crassiceps) A note. Limnol. Oceanogr. Morita, R. Y., P. F. Mathemeier, and W. North, William B. , and J. V. Byrne. Coastal landslides of northern Oregon. The Ore Bin. 65 Osterberg, C. , N. Cutshall, and J. Cronin. Chromium-51 as a radioactive tracer of Columbia River water. Science. (in press) Park, Kilho. Columbia River plume identification by specific alkalinity. Limnol. Oceanogr. (accepted) Park, Kilho, M. J. George, Y. Miyake, K. Saruhashi, Y. Katsuragi, Strongium-90 and cesium-137 in the Columbia River plume, July 1964. Nature. and T. Kanazawa. Pearcy, W. G., and R. M. Laurs. Vertical migration and distribution of mesopelagic fishes off Oregon. Deep Sea Res. (in press) Pytkowicz, R. M. and D. Kester. , Oxygen and phosphate as indicators for the deep intermediate waters in the Northeast Pacific Ocean. Deep Sea Res. Carbonate cycle and the buffer mechanism of Recent Pytkowicz, R. M. oceans. Science. Trembly, Lynn D. , and Joseph W. Berg, Jr. Amplitudes and energies of primary seismic waves near the Hardhat, Haymaker, and Shoal nuclear explosions. Bull. Seis. Soc. Am. Weyl, Peter K. The stability of environmental variables on the earth's surface. Science. Papers Presented at Scientific Meetings Berg, Joseph W. , Jr. , and L. Timothy Long. The character of refracted arrivals. Presented at Seismological Society of America, April 1965, St. Louis, Missouri. Berg, Joseph W. , Jr. , and J. V. Thiruvathukal. Gravity measurements in Oregon. Presented at American Congress on Surveying and Mapping, August 1965, Portland, Oregon. The explosive seismic source. Presented at 15th Annual GSI Orientation Session (invitational paper), June Berg, Joseph W. , Jr. 1965, Dallas, Texas Byrne, J. V., N. J. Maloney, and G. A. Fowler. A sedimentary model of the continental margin off Oregon. Presented at Annual Meeting American Association of Petroleum Geologists - Soc. Econ. Paleon. and Mineral. , April 1965. New Orleans, Louisiana. Chiburis, E. F. Crustal and subcrustal investigations in the Pacific Northwest States from surface wave dispersion. Presented at the 46th Annual Meeting, American Geophysical Union, April 1965, Washington, D. C. Dehlinger, Peter, and R. W. Couch. Gravity survey over the Eastern end of the Mendocino Escarpment. Presented at the 46th Annual Meeting, American Geophysical Union. April 1965, Washington, D. C. Dehlinger, Peter, Hyman Orlin, and G. N. Gallagher. Gravity survey North of Hawaii. Presented at the 46th Annual Meeting, American Geophysical Union, April 1965, Washington, D. C. Dehlinger, Peter and W. S. French. Investigations on the nature of "Post-Pn" waves. Presented at the 46th Annual Meeting, American Geophysical Union, April 1965, Washington, D. C. Karinen, J. F. , H. Curl, Jr. , and W. G. Pearcy. Succinic oxidase activity in mesopelagic fishes. Presented at Pacific Division, American Society of Limnology and Oceanography, June 1965, Riverside, California. Kulm, L. D., and J. V. Byrne. Realms of deposition in an Oregon estuary. Presented at Geological Society of America, Cordilleran Section, April 1965, Fresno, California. Morita, R. Y. Invited speaker, International Marine Microbiology Symposium, Society for General Microbiology. Aberdeen, Scotland. "Effect of moderate temperature on Vibrio marinus, an obligate psychrophilic marine bacterium. " September 16-18, 1965. Morita, R. Y. Invited participant, International Conference on High Pressure. August 2 to 6, 1965, LeCreusot, France. Morita, R. Y. Invited speaker, Symposium on "Characterization of Marine Bacteria, Structure, Function, Interaction and Significance". Annual Meeting, American Society for Microbiology, April 26, Topic: Hydrostatic pressure effects on 1965, Atlantic City, . growth and metabolism. Osterberg, C. Radioactivity from the Columbia River. Symposium on the distribution of Columbia River water in the Pacific. C. Barnes Chairman, ASLO- MTS Conference on Ocean Science and Ocean Engineering, 14-17 June 1965, Washington, D. C. 67 Pattullo, June G. Member, I. U. G. G. Mean Sea Level Committee, Symposia on Tide Gauge Instrumentation and Analysis of Tide Gauge Data, May 1965, Paris, France. Pearcy, W. G. Vertical distribution of and migration of micronekton off Oregon. Presented at Pacific Division, American Society of Limnology and Oceanography, June 1965, Riverside, California. Pytkowicz, R. M. The high pressure solubility of calcium carbonate. Presented at the Gordon Conference on Low Temperature Geochemistry, August 1965, Tilton, New Hampshire. Small, L. F. Winter respiratory metabolism in euphausiids off Oregon. Presented at Pacific Division, American Society of Limnology and Oceanography, June 1965, Riverside, California. Small, L. F. Variations in photosynthetic assimilation numbers in natural marine phytoplankton communities. Presented at Pacific Division, American Society of Limnology and Oceanography, June 1965, Riverside, California. Trembly, Lynn D. , and Joseph W. Berg, Jr. Primary seismic waves near Hardhat, Shoal, and Haymaker explosions. Presented at Seismological. Society of American, April 1965, St. Louis, Missouri. Whitcomb, James H. , Joseph W. Berg, Jr. , and Barrett H. Erickson. Marine geophysical studies offshore - Newport, Oregon. Presented at Geological Society of America, Cordilleran Section, April 1965, Fresno, California. Weyl, Peter. Invited speaker. The role of the oceans in climatic change. Presented at INQUA Congress, August 1965, Boulder, Colorado. Weyl, Peter. Environmental stability of the earth's surface. Presented at Department of Geology, Princeton University, and Lamont Geological Observatory, April 1965. Weyl, Peter. Dolomitization. Presented at Department of Geology, Columbia University, April 1965. Weyl, Peter. The heat of mixing of sea water. Presented at American Geophysical Union, April 1965, Washington, D. C.