Department of Oceanography SCHOOL OF SCIENCE OREGON STATE COLLEGE Corvallis, Oregon PHYSICAL HYDROGRAPHIC DATA OFFSHORE FROM NEWPORT, OREGON, FOR JULY 1958 TO JULY 1959 by Bruce Wyatt and Richard Callaway Data Report No. 4 Office of Naval Research Contract Nonr 1286 (02) Project NR 083-102 Reference 61-1 January 1961 Wayne V. Burt Chairman INTRODUCTION The Department of Oceanography at Oregon State College initiated an oceanographic survey of the Oregon coast on July 1, 1958. The purpose of this report is to present salinity, temperature, and oxygen data collected for the interval from July 1958 to July 1959, and to present a preliminary interpretation of the results. PROCEDURE Coast Guard vessels of 40 and 52 feet in length stationed at Newport and commanded by BMI McAdams and BMI Dwyer were used to make surveys at the stations which were located at five mile intervals, from the intersections of the south jetty of Yaquina Bay and the beach to 25 miles offshore, (Figure 1). Samples from the surface, 50 and 100 feet were obtained at each station with the aid of a Frautschy or Kemmerer bottle. Generally the wire angles were negligible. However, an additional four feet of wire was payed out with wire angles between 5 and 10°. Temperatures were taken on, deck with a bucket thermometer. Although no tests were made, othe accuracy of the temperature measurements was estimated as 0.2 C. Salinity and oxygen samples were analyzed in the laboratory by standard methods. INDICATIONS OF WATER MASS CHARACTERISTICS OFF NEWPORT, OREGON Upwelled water has a relatively high salinity, and a relatively low temperature and dissolved oxygen content. Early indications show that during part of the summer a narrow band of upwelling exists to at least five miles and opossibly to. 15 miles offshore from Newport. Salinities of 33.31 /oo, 32.70 /oo, and 32.63 /00 were present at stations 1, 2, and 3 off Newport in August, 1958 (Table 1). Similar values were obtained during the September and October cruises at these same stations (Table 1 0 and Figures 4 and 5). Associated with these high salinities, relatively low temperatures were recorded (Station 1, July, 15.2 C., Station 1, August, 10.9 C., Station 1, September, 11.4 C.,) further sustantiating the presence of upwelling, Figure 4 and Table 1. -2- According to Reid, Roden and Wyllie (1956), the California current system at its oupper latitudes should have a minimum salt content of about 32.5 /oo. Lower salinity water might result from the influence of the Columbia River or other coastal runoff. Surface salinity values at Station 3 (15 mile station) for July and September were 29.00 0 /00, and 31.920 /00 respectively, (Figures 3 and 4 and Table 1), indicating the possible presence of Columbia River water. Salinity and temperature results obtained during cruises made in November, January, March, and April are more difficult to interpret. More extensive observations made by the U. S. Coast and Geodetic Survey R/V EXPLORER in February of 1960 and by Oregon State College Department of Oceanography should provide indications of winter circulation off the Oregon coast. DISTRIBUTION OF PROPERTIES Survey data are presented graphically. Figure 2 is a vertical time section of temperature, salinity, and dissolved oxygen at the 10 mile station off Newport. Figures 3 through 8 are vertical sections of salinity, dissolved oxygen, sigma t, and temperature for stations occupied from July 1, 1958 to June 2, 1959. Observations used . to construct curves are presented in Table 1. BIBLIOGRAPHY Knudsen, Martin, Editor (1956). Hydrographical Tables. Copenhagen G. E. C. Gad. Reprinted by Tutein og Kock. 63 pp. Reid, J. L. Jr., G. I. Roden, and J. G. Wyllie (1958). Studies of the California Current system. Calif. Coop. Oceanic Fisheries Invest., Progress Report, July 1956 to January 1958, 28-56. U. S. Hydrographic Office (1955). Instruction Manual for Oceanographic Observations. H. O. Pub. 607. pp. 1 - 210. -3- 124°40' 124°20' 124° — 44°50' — OREGON Yag ina Head —44°40'— Newport 4 3 0 2 0 — 4 4°30' PACIFIC OCEAN Wald ort 4 4°20' — — 4 4°1 — F'gure I. Location of Oceanographic Stations at 5 Mile Intervals of f Newport, Oregon, July 1958- September 1959. Aug. July Salt %' I i Sept. I Oct. t Nov. - too ft._ ..- 4- . - . 0- • • • • - -40-- - ;1j it _ _ . -.. •-• • I Jan. I Feb. Mar. I I Apr. I June May I Jul I I — 33.0 — 32.0 — 31 .0 — — 30 .0 — — 8 .0 0, mt/I. — — 7 .0 — 6.0 — 5 .0 — 4.0 — 16.0 Temp. °C ° — 15.0 — 14 .0 — 13 .0 — 12 .0 — .0 — 10.0 — 11 . „:".0 -0 . of 1 .. ss, ck '''.. . v.-....o -----so i.t., ----- - 0------ .- .19---- - — . . I — ..- — 192”...-----d I I I I I I I I I I I — — — .. Figure 2. I I Observations of Salinity, Dissolved Oxygen, and Temperature at Station 2, Ten Miles West of Newport, Oregon, Token from July 1958 to July 1959. I I I I I I I I I I -5- Distance Off-shore in Nautical Miles 15 10 5 0 20 25 50 0 4.60 j f Oa mo. July I, 1958 / 7.50 TOO 6.50 25 6.50, •,6.00 5.50 • Solt 19' Aug. 5, 1958 4-n•n• --• • • 1 132.75 1 33.00 I . a) 33.25 25 / 50 0 7.50 25 50 Figure 3. Vertical Distribution of Salinity and Dissolved Oxygen at. Three Stations West of Newport, Oregon, on July I, 1958 and August 5, 1958. -6- Distance Off- shore in Nautical Miles 0 20 15 10 5 Salt 78 Sept. 4,1958 32.00 32.50 50 33.00 • \ . 33.50 100 0 50 C 1001 0• 4- a. Y crt Sept. 4,1958 24.00 24.50 50 25,00 25.50 0 50 100 Figure 4. Vertical Distribution of Salinity, Temperature, cry, and Dissolved Oxygen at Four Stations West of Newport, Oregon, on September 4, 1958. -7. Distance Off-shore in Nautical Miles 20 15 10 5 0 50 100 0 • Temp. °C Oct. 7,1958 . — s-s- 's -11.25 _ \• 10.75 . --.... ...11.00 1\0.50 . .... — . s.. . • . \ . \ I0.25 • \ \ 10.00 \ . 50 a) c N, \ • . is< \ \ 9.75 • 100 . . \ \ 0 w 50 100 0 • Oamat. Oct. T, 1958 \ • 50 • • 6.50 6.00 •. \ 5.50 00! 5.00• 5.50 100 .3.50 • \ . Figure 5. Vertical Distribution of Salinity, Temperature, tr t , and Dissolved Oxygen at Four Stations West of Newport, Oregon, on October 7, 1958. .s. Distance Off-shore in Nautical Miles 25 20 15 10 5 0 50 100 0 50 .4— lL C I00 0 trt Jan. 20,1959 24.00 a) 5024.50 25.06 100 0 Oa mih. Jan. 20,1959 ... ... ....., .... — — —6.30-, •••• •••• 50 / / -,. 11 ••,.. . • .... — .1., .... ••.. I 11 .. .. — ,. -6.40 .... —6.50_ — — •••••• ••••• •••• •••• ....... \• ....• •••• •n• •••• ..... ....... ,.... op.. •n•• , — .•n•• — — — — ••••. •.°. .0. ...„ r.• ...n ••••• NO •• ••• •••• ... .... •••• :M. -- ,...•• ••••• - ••••• 6.26 100 Figure 6. Vertical Distribution of Salinity, Temperature, ar t , and Dissolved Oxygen at Five Stations West of Newport, Oregon, on January 20, 1959. Distance Off-shore in Nautical Miles 20 15 0 17 35 0 Temp. °C Mar. 5, 1959 7 1 1 11.25 1 \ • 17 4a) 7 ' 11.00 .7 / 10.50 // / 10.75 ..• / / . 1 1 1 1 1 n 11.50 LL A 35 • A 0 I ga 24.00 or. o, 1959 . ••• .•••• 24.25 • 17 24.50 24.50 35 0 r Oa ml /L Mar. 5, 1959 Y I I 17 '1/4 40 6. \ 35 i 1/4 \ \ 1 n . . \ -.. .... n .... \ 5... \ a\ \ n / / / / / \ \ / / / \ \ \ _i \ \ , / / \ \ `‘ \ \ / \ % % \ / / \ % 6.50 Na \ \ \ .../ \ \ \ \ \ n r i I • 1 1 1 \ %%\ 1 6.70 6.90 1 6.60 % 6.80\ \ \ • % 6.70 / / / / / / / / / 6.60 / a Figure 7. Vertical Distribution of Salinity, Temperature, ol , and Dissolved Oxygen at Four Stations West of Newport, Oregon, on March 5, 1959. -10- Distance Off-shore in Nautical Miles 5 0 10 25 20 15 50 100 0 Temp. °C June 2, 1959 13.00 12.00 itk0 12.50 50 0) 11 .50- — — — 11.50 — — ,11.TFT\ c 100 0 of June 2, 1959 0 25.00 25.50 50 - 100 0 50 I00 Figure 8. Vertical Distribution of Salinity, Temperature, crt , and Dissolved Oxygen of Five Stations West of Newport, Oregon, on June 2, 1959. TABLE I. Observationa_of Salinity, Temperature, Sigma t, end Dissolved Oxygen Taken from Five Stations Located at Five Nile Intervals West of Newport, Oregon from July 1, 1958, to June 2, 1959. 1 Station Date 7-1-58 N Station 124° 10.9' W Date feat Temp. 011 02 m171 Salinity °/oo 0 15.2 8.14 31.53 25 7.24 50 5.05 Station 2 Date 7-1-58 Time 1050 PST 2 8-5-58 Depth Temp. feet (°C) 124° 17.g' Depth 42 fathoms 02 m111 Salinity °/oo 0, 7.27 32.70 32.30 50 7.30 32.72 32.92 100 5,31 32.88 _ 44° 35.8' N Station 124° 17.8' W Date 8-5-58 Time 155 PST Depth 42 fathoms 3 44° 35.8' N 124° 24 8' W Depth 37 fathoma Temp. (°C) 0, m171 Salinity 0/oo Depth feet Temp. (°C) 02 m1/1 Salinity 0/oo 16.1 6.77 29.16 0 12.6 7.99 32.63 25 6.71 31.27 50 6.30 31.80 Depth feet 0 Station /-1-58 Date Time 3 0 Temp. (°C) 02 m171 17.4 25 0.... t 02 m1/1 Salinity 11.4 5.30 33.15 25.29 0/00 10.8 4.50 33.26 25.48 31.71 50 10.6 4.17 33.37 25.60 100 10.1 2.74 33.69 25.93 0, m171 Salinity °/oo 2 N Station W Date_ 9-4-58 Time 1030 PST Depth 29 fathoms trt Depth feet 44° 35.8' N 124° 17.8' W Depth 42 fathoms Temp. (°C) 02 m1/1 Salinity °/oo ,r 33.31 0 14.1 6.13 ;2.27 24.08 6.22 33.28 25 12.7 5.86 32.45 24.50 5.40 33.21 50 . 11.9 5.45 32.65 24.81 10.4 3.54 33.06 25.39 6.35 . Temp. (°C) 25 124° 10.9' 10.9 W 30.73 44° 35.8' Temp. (°c) Depth feet 124° 10.9' Depth 29 fathoms 6.68 1 50 100 Salinity °/oo 9-4-58 Time 0955 PST N 29.00 Time 1100 PST 0 Date 44° 35.8' 6.46 Date 8-5-58 Depth feet 124° 24.8' 1 en 0 6.46 50 Station Station Depth 37 fathoms 1135 PST Depth (cet 44° 35.8' N 44° 35.8' Time 1130 PST Depth 29 fathoms Time 0955 PST Depth 44° 35.8' 100 -12- Station 3 Date 9-4-58 Time 1120 pot Depth feet 0 44° 35.8' N Station 124° 24.8' W nate Depth 37 fathoms Time Temp. (°C) 02 0111 Salinity 0/oo el 14.4 6.45 31.92 23.75 6.76 32.92 25.11 6.09 33.03 25.31 5.74 33.06 50 11.6 "5.89 32.65 24.86 100 100 10.9 4.87 32.92 25.20 Station W Time 1200 PST Depth feet Temp (°C) 2 m7/1 Salinity °/oo 0 14.7 6,70 31.87 23.65 25 14.4 6.86 31.91 23.74 50 12.3 6.64 32.66 24:74 100 11.2 4.73 33.04- 25.24 Station Date Time Depth 79 fathoms 1 124° 10.9' 1115 PST Temp. W Salinity o•-•t 44° 35.8' N 124° 31.7' V 10-7-58 Time 1310 PST Depth feet Temp. (°C) 02 m1/I Salinity 0 11.0 6.53 32.92 25.18 50 10.6 5.65 33.10 25.39 100 10.5 5.29 33.15 25.44 Date Depth 11-24-58 Depth feet 79 fathoms ot 0/00 1 44° 35.8' N 124° 17.8' W Depth 42 fathoms Time 1120 PST Depth 29 fathoms J.31 4 Date Station 44° 35.8' 10-7-58 Depth ,r Depth 37 Whom* . 10.7 24.21 124° 31.7' v 11.4 32.18 9-4-58 124° 24.8' 0 6.54 44° 35.8' N 02 -Salinity m1/1 °too 13.1 Date 1235 PST 44° 35.8' Temp. (°C) 25 4 10-7-58 Depth feet 50 Station 3 Temp. (°C) 02 m1/1 Salinity (goo 11.5 6.20 32.41 24.70 GT 0 10.4 5.53 33.21 25.51 50 10.1 4.62 33.48 25.77 50 11.9 6.11 32.57 24.75 100 9.7 3.47 33.60 25.92 100 12.1 6.02 32.68 24.79 Station Date Time Depth feet 2 44° 35.8' 10-7-58 124° 17.8' mill Salinity Station Date 2 44° 35.8' N 11-24-58 124° 17.8' W Time 1200 PST Depth 42 fathoms 1200 PST 1m. N 0 el Depth feet eet Depth 42 fathoms Temp. (°C) ml 1 Salini ty 0/ 0, GT 0 11.1 6.88 32.95 25.16 0 11.4 6.08 32.86 25.06 50 10.6 6.09 33.01 25.32 50 11.6 6.17 32.97 25.11 100 10.0 3.82 33.31 25.66 100 11.8 6.08 32.97 25.08 -13- Station Date 440 15.8' 1 124! 10 9' 1-20-59 Depth 29 fathoms Time 1103 PST Depth feet Station W Temp. , (°C) 02 m1/1 Salinity 0/go Date Time e't 5 1-20-59 °C 0 ml 1 Temp. N 124° 38.6' V Depth 147 fathoms 1330 PST Depth feet 44° 35.8' Salinity ° oo 0 11.0 6.32 31.27 23.90 0 11.1 6.53 30.32 23.15 50 11.0 6.23 31.55 24.12 50 11.2 6.17 32.57 24.87 100 11.1 6.26 32.38 24.74 100 11.2 6.14 32.75 23.01 Station 2 44° 35.8' N Station W Date 1-5-59 Time inn PST Depth feet Temp. 02 Salinity (°C) mal °/oo 11.2 6.47 31.91 24.36 32.09 24.43 32.25 24.57 Date 1-20-59 124° 17.8' Time 1145 PST Depth 42 fathoms Depth feet Temp. (°C) 02 m111 10.8 6.47 0 Salinity °/00 30.66 'PE 23.46 0 1 50 11.0 6.17 32.14 24.57 17 11.6 100 11.0 6.17 32.39 24.77 35 11.5 6.32 Station 3 1-20-59 Time 1215 PST Depth feet 44° 35.8' N Station 124° 24.8' W Date 1-9.59 Time 1190 PST Depth 37 fathoms e/ 1010 15.8' M 1940 17.8' W Depth 42 fathoms 0 11.0 6.53 31.73 24.25 24.80 17 10.6 6.56 31.87 24.44 24.99 35 11.0 6.38 32.14 24.57 0 11.0 6.59 29.52 22.55 50 11.2 6.29 32.47 100 11.5 6.17 32.79 or 3 44° 35.8' N Station 124° 31.7' W Date 3-5-59 Time 1200 PST Depth feet Temp. Date 1-20-59 Time 1245 PST Depth feet Temp. (°C) 02 m1/1 Salinity 0/00 43....t 29.42 22.41 0 0 2 29 fathom' Salinity Salinity 0/00 Depth V 02 m1/1 02 m1/1 4 174° 10.9' Temp. (°0) Temp. (°C) Station Depth feet N Depth 6.41 Date 44° lix 79 fathoms 11.4 6.56 50 11.3 6.17 32.61 24.89 11 100 11.4 6.17 32.68 24.92 35 '44° 35.8' N W 124° 24.8' Depth 37 fathoms (°C) 02 m1/1 Salinity °/oo 10.5 6.94 31.27 6.91 31.29 6.62 31.94 10.7 or"t °/oo of 23.99 24.47 Station 4 Date 3-5..59 Time 1230 PST Depth feet Temp. (°C) 02 m171 6.76 0 10.5 10.6 6.64 35 10.5 6.59 1 Date 4-21-59 Time 1100 PST Depth feet N Station 124° 31.7' W Date Depth 17 Station 44° 35.8' Salinity 0/00 02 m171 Depth feet 5.59 11.0 31.73 24.32 11.2 32.07 24.61 35 10.9 124° 31.7' W 02 m111 0 N Depth Temp. (°C) 17 44° 35.8' 79 fathoms Salinity 0/00 6.73 61 31.47 24.06 31.49 24.03 32.03 24.50 44° 35.8' N Station 124° 10.9' W Date 4-21-59 'Lime 1300 PST Depth feet Temp. (°C) m1/1 Salinity °/oo 11.8 5.06 30.93 23.49 Depth Temp. (oC) tr t , 1230 PST 24.15 31.49 _ 4-21-39 Time 79 fathoms 4 29 fathom Salinity 0/oo et 5 44° 35.8' N 124° 38.6' W Depth 02 147 fathoms rt 0 11.1 8.23 17 11.0 7.50 17 11.5 6.94 31.17 23.74 35 11.1 7.79 35 11.2 6.44 31.42 23.98 Station 2 Date 4-21-59 Time 1125 PST Depth feet 0 44° 35.8' N Station 124° 17.8' W Date 6-2-59 Time 1045 PST Depth Temp. (°C) 02 ml 1 42 fathoms Salinity 0/00 0.1. Depth feet 44° 35.8' 1 124° 10.9' Depth Temp. (°C) 02 ml/1 W 29 fathoms Salinity 0/00 _ 11.1 8.23 32.54 0 12.0 5.36 33.24 25.24 17 11.2 7.67 32.57 50 11.8 2.71 33.73 25.67 35 11.1 8.56 32.95 100 11.5 1.95 33.86 ' 25.82 0 Station 3 Date 4-21-59 Time 1155 PST 44° 35.8' N Station 124° 24.8' W Date 6-2-59 Time 1125 PST Depth 37 fathoms Salinity °/oo Temp. (t) 02 m1/1 0 11.0 6.82 32.09 17 11.1 6.70 32.14 Depth feet 35 10.6 6.67 32.27 2 440 35.8' N 124° 17.8' W Depth 02 42 fathoms SaAinity feet Temp. (°C) ml/1 /oo 24.53 0 12.5 6.55 31.80 24.04 24.57 50 11.8 4.67 32.80 24.94 24.75 100 11.0 2.99 33.51 25.64 al Depth ri -15- Station Date 3 6-2-59 Time 1200 PST Depth feet 0 Temp. (°C ) 12.1 N 44° 35.8' Date 124° 24.8' 44° 35.8' W 124° 31.7' 6-2-59 Depth 79 fathoms Time 1225 PST Depth 37 fathoms 02 mill 6.48 4 Station Salinity °/oo 31.78 4:t 24.09 Depth feet 0 Temp. (°C) 13.0 02 m1/1 6.48 Salinity v/oo 31.17 .. _ 't 50 12.0 6.20 31.94 24.24 100 10.5 5.88 32.72 25.11 50 11.9 5.38 32.45 24.65 100 11.5 4.14 33.03 25.17 Station Date 5 44° 35.8' N 6-2-59 124° 31.7' W Time 1305 PST Depth feet /rg. Depth 79 fathoms m1/y1 Salinity o-t 0 13.5 30.03 22.48 50 13.0 31.06 23.37 100 12.0 32.38 24.58 23.38 September 15, 1960 Distribution ► tst Oregon State College Office of Naval Research Contract (Nonr 1286(02)) DEPARTMENT OF DEFENSE 1 Assistant Secretary of Defense for. Research & Engineering Attn: Committee on Sciences Pentagon Washington 25, D. C. 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