of
B-5
)CEANOGRAPHY
Hydrographic and Chemical Data
from the Eastern Tropical North
Pacific Ocean-January 1977
by
Yuval Cohen
Marvin D. Lilley
Louis I. Gordon
Office of Naval Research
Contract N00014-76-0-0067
NR 083-102
OREGON STATE UNIVERSITY
Reference 7&6
March 1978
Reproduction in whole or in part
Is per-
mitted for any purpose of the United States
Government
Unclassified
SECURITY CLASSIFICATION OF THIS PAGE (When Do; Entered)
READ INSTRUCTIONS
BEFORE COMPLETING FORM
REPORT DOCUMENTATION PAGE
.REPORT NUMBER
5. TYPE OF REPORT & PERIOD COVERED
TITLE (and Subtitle)
4
HYDROGRAPHIC AND CHEMICAL DATA FROM THE
Technical January 1977
EASTERN TROPICAL NORTH PACIFIC OCEAN -
6. PERFORMING ORG. REPORT NUMBER
January 1977
7.
AUTHOR(.)
Y
RECIPIENT'S CATALOG NUMBER
3.
Z. GOVT ACCESSION
uva l
6. CONTRACT OR GRANT NUMBER(e)
C o h en
N00014-76-C-0067
Marvin D. Lilley
Louis I . Gordon
10.
PERFORMING ORGANIZATION NAME AND ADDRESS
9
School of Oceanography
PROGRAM ELEMENT, PROJECT, TASK
AREA A WORK UNIT NUMBERS
R 083-102
Oregon State University
Corvallis, OR 97331
11.
12.
CONTROLLING OFFICE NAME AND ADDRESS
REPORT DATE
March 1978
Office of Naval Research
Ocean Science & Technology Division
Arlington, VA 22217
4.
e
13.
NUMBER OF PAGES
15.
SECURITY CLASS. (of this report)
25
MONITORING AGENCY NAME & ADDRESS(I1 different from Controlling Office)
Unclassified
IS.. DECLASSIFICATION/ DOWNGRADING
SCHEDULE
16. DISTRIBUTION STATEMENT (of this Report)
Approved for public release; distribution unlimited
17. DISTRIBUTION STATEMENT (of the abstract entered in Block 20, it different from Report)
18. SUPPLEMENTARY NOTES
19.
KEY WORDS (Continue on reverse side if necessary and identify by block number)
1.
2.
3.
4.
5.
Hydrographic data
Chemical data
Nitrous oxide
Nutrients
Denitrification
6. Eastern Tropical North Pacific Ocean
20. ABSTRACT (Continue on reverse side If necessary and identify by block number)
This report presents hydrographic and chemical data from the eastern
tropical North Pacific Ocean collected in January 1977 aboard Oregon State
University's (OSU) R/V WECOMA during Leg I of Cruise WELOC 77. The purpose
of the cruise, WELOC-77-I, was to in estigate the distributions of dissolved
nitrous oxide and molecular hydrogen in an oceanic environment characterized
by an extensive oxygen minimum layer which is thought to be the major
Accordingly, the research effort
denitrification site in the world ocean.
FORM
DD I J AN 73 1473
EDITION OF I NOV 65 IS OBSOLETE
sIN 0102-014-6601 1
Unclassified
SECURITY CLASSIFICATION OF THIS PAGE (When Data Sntered)
Unclassified
..L'-IJRITY CLASSIFICATION OF THIS PAGE(Whsn Datai E.at.ied)
20.
continued
was concentrated on studying the distributions of variables at stations
located around the core of the oxygen minimum.
Some of the data presented in this report have been discussed in the
following publications:
- Y. Cohen (1977) Shipboard measurement of dissolved nitrous oxide in seawater by electron capture gas chromatography. Anal. Chem. 49(8): 1238-1420.
- Y. Cohen and L.I. Gordon (1978) Nitrous oxide in the oxygen minimum of the
evidence for its consumption during
eastern tropical North Pacific:
Deep-Sea Res.,
denitrification and possible mechanisms for its production.
In Press.
1
The hydrogen data will be submitted in a later data report.
Unclassified
SECURITY CLASSIFICATION OF THIS PAGE(1PA.n Data entered)
073
SCHOOL OF OCEANOGRAPHY
STATE UNIVERSITY
97331
Corvallis, Oregon
Sc. C.
OREGON
HYDROGRAPHIC AND CHEMICAL DATA FROM THE
EASTERN TROPICAL NORTH PACIFIC OCEAN
-
JANUARY 1977
Yuval Cohen
Marvin D. Lilley
Louis I. Gordon
Office of Naval Research
Contract N00014-76-C-0067
Project NR 083-102
Reference 78-5
March 1978
George H. Keller
Acting Dean
Approved for public release; distribution unlimited
CONTENTS
Page
INTRODUCTION
METHODS
CRUISE PARTICIPANTS
ACKNOWLEDGMENTS
REFERENCES
DATA LISTING
1
3
4
4
5
7
INTRODUCTION
This report presents hydrographic and chemical data from the eastern
tropical North Pacific Ocean collected in January 1977 aboard Oregon State
University's
(OSU)
R/V WECOMA during Leg I of Cruise WELOC 77.
the cruise, WELOC-77-I, was to investigate the
The purpose of
distributions of dissolved nitrous
oxide and molecular hydrogen' in an oceanic environment characterized by an
extensive oxygen minimum layer which is thought to be the major denitrification site in the world ocean (e.g.
Kaplan, 1975).
Codispoti and Richards, 1976; Cline and
Accordingly, the research effort was concentrated on study-
of
ing the distributions of variables at stations located around the core
the oxygen minimum.
have been discussed in the
Some of the data presented in this report
following publications:
of dissolved nitrous oxide in
- Y. Cohen (1977) Shipboard measurement
seawater by electron capture gas chromatography.
Anal. Chem. 49(8):
1238-1240.
Nitrous oxide in the oxygen minimum
- Y. Cohen and L.I. Gordon (1978)
of the eastern tropical North Pacific:
evidence for its consumption
for its production.
during denitrification and possible mechanisms
Deep-Sea Res., In Press.
1
data report.
The hydrogen data will be submitted in a later
2
1 OS ANGELES
N-
30°N
N
WE LOC
LEG I
'3
3
20°N
6
5
70
8
9
14
IO°N
I
15
120° W
Figure 1.
I IO°W
IOO°W
90°W
80°W
Station locations for Cruise WELOC-77-I. The dashed line delineates the
region where intermediate waters contain less than 10 umol 02 1- as
determined by the Winkler procedure.
METHODS
Sampling
Samples
Station locations for Cruise WELOC-77-I are shown in Figure 1.
were collected primarily in 5- and 30-liter PVC bottles designed and constructed at OSU (Mesecar, 1976) but at some stations one liter NIO bottles
were used.
All samples were processed onboard.
Therefore,
the sampling in-
tervals at a given station were selected on the basis of the data collected
at the near-by previously occupied stations.
Analytical Procedures
Temperature was measured with reversing thermometers calibrated at OSU.
Salinity was determined using a Guildline Autosal Model No. 8400 salinometer with an average precision of
are one relative
0.01%.
(All the reported precisions
standard deviation of replicate sample measurements.)
Dissolved oxygen was determined using Carpenter's
(1965)
modification
of the Winkler procedure with 0.3% precision at the deep water levels.
The
method is accurate to about 0.5% at normal oceanic oxygen levels but its
accuracy might be quite poor at the low oxygen levels around the core of the
eastern Pacific oxygen minimum (Broenkow and Cline, 1969).
Nutrients were measured with the OSU AutoAnalyzer II system (Gordon et
al.,
1975).
Precisions and estimated accuracies at the deep water levels
were 0.2% and 2%, respectively,
for
silicate, 0.4% and 2%,
phosphate, 0.5% and 2%, respectively,
respectively, for
for nitrate and 0.5% and
5%,
respec-
tively, for nitrite.
Dissolved nitrous oxide was measured using electron capture gas
chromatography (Cohen,
3%.
The same method
1977)
with
2%
precision and an estimated accuracy of
was used for measurements of nitrous oxide in air sam-
4
pies.
The average atmospheric nitrous oxide content determined from 16 sam-
ples of marine air taken during the cruise was 287 + 9 ppbv (3.1%, one
relative standard
deviation).
The atmospheric N20 content showed no syste-
matic variations with respect to geographic location along the cruise track.
CRUISE PARTICIPANTS
Marvin Lilley
OSU
Yuval Cohen
OSU
Wayne Dickinson
OSU
David Standley
OSU
James Mitchell
OSU
Gary Johnson
OSU
George O'Masta, Jr.
OSU
Marcia Benad-
Clatsop Community College, Astoria, Oregon
Becky McClurken
Corvallis, Oregon
Reuben Garcia-Gayton
School of Marine Science,
Ensenada,
Baja California,
Ensenada,
Baja California,
Mexico
Ernesto Reynoso
School of'Marine Science,
Mexico
William VanRy,
Seattle, Washington
ACKNOWLEDGMENTS
Cruise WELOC-77-I was funded by the Office of Naval Research through
Contract N00014-76-C-0067 under Project NR 083-102.
the assistance of the
WECOMA.
officers,
We greatly appreciate
crew and scientific party aboard R/V
5
REFERENCES
of dissolved
W.W. and J.D. Cline (1969) Colorimetric determination
74, 450-454.
oxygen in low concentrations. Limnol. Oceanog.,
Broenkow,
J.H. (1965) The Chesapeake Bay Institute technique for the
Winkler dissolved oxygen method. Limnol. Oceanog., 10, 141-143.
Carpenter,
Cline, J.D. and
I.R.
of dissolved
Kaplan (1975) Isotopic fractionation
tropical North Pacific
nitrate during denitrification in the eastern
Ocean.
Mar. Chem.,
3, 271-299.
An analysis of the horizontal reLimnol.
Pacific.
gime of denitrification in the eastern tropical North
Codispoti,
L.A. and F.A. Richards
Oceanog.,
(1976)
21, 379-388.
Cohen, Y. (1977) Shipboard measurement of
water by electron capture gas
dissolved nitrous oxide in sea-
chromatography.
Anal. Chem., 49, 1238-
1240.
(1975)
Park, and D.R. Standley
Gordon, L.I., C.N. Dahm, W.H. Dickinsc,n, P.K.
it
data
system.
In: Proc. UNOLS
A precision oceanographic nutrier
Woods
Hole Oceanographic
Working Conf. on Oceanographic DEtta Systems.
Institution, Nov. 12-14, 38-56.
Mesecar, R. (1976) A positive seal water bottle.
Exposure, 4, 1-5.
DATA LISTING
The following notations are used in the data listing:
Z
Depths in meters
T
Temperature in degrees Celcius
POT T
Potential temperature in degrees Celcius
S
Salinity in per mil
02
Dissolved oxygen concentration in micro-moles per liter
SIL
Silicate concentration in micro-moles per liter
P04
Phosphate concentration in micr-moles per liter
N03
Nitrate concentration in micro-moles per liter
N02
Nitrite concentration in micro-moles per liter
N20
Dissolved nitrous oxide concentration in nanno-moles per liter
A summary of weather conditions during the cruise (Table 1) follows the
Data Listing, page 25.
STATI ON N(. !"377
T
{+0)
(W)
1
10
25
,+9
74
)T
(C)
121
34 1 Q.2N
1
T
S
(0/0`C)
02
SIGMA
SIL
14.55c
33.656
33.679
25.0/0
0
12. 63 3
33.666
25. 443
8. 1
14.3R0
14.530
14.;5:0
14.380
12.690
11.820
0
'5.04=7
Messenger Time:
.43
.?
1. O:
11.31.29
14.7
1/12/77
PC4
N03
N02
1345
1.49
N20
(NM/L)
(UM/L)
THETA
98
Date:
17.5W
.5
.6
004.
9.5
14.2
17.2
. 35
Bottom Depth:
.05
.04
.03
256 m
8.52
8.36
r
2- .
ST AT 1CN
Z
10
TN=TA
17.740
17.740
17.728
17.637
17.605
17.421
1'4.369
12.636
11,681
33.949
33.947
33.954
147
0730
30
17.51 0
50
17.+30
75
14.3 R0
100
1'.550
150
11.700
10.720
9.580
9.230
7.500
299
407
1J.695
34.325
9.19 7
34.377
26.619
7.559
34.33A
34.3F0
26.'40
34.400
3v.44?
27.202
27.234
27.393
27.579
49
27. E3?
76
507
5,A7i
'0 8
5.290
5. 230
776
'+ 810
.+.1.3f
4.746
4.053
2.895
2.140
845
3.000
2.270
Date:
1/14/77
443
1
33 .949
33.939
33.525
33.634
34..133
31.,4K4
34.576
34.b24
Messenger Time:
(!w
SIi.
P04
N03
NO?
(UM/L)
24.552
24.553
24.580
24.584
24.621
24.994
25.427
25.59E
26.325
499
984
02
SI GMA
(0/00)
17.640
249
S
(O)
20
200
?OT ?
11b
UN
l
P4)
1
z8
z
1653
24Fi
246
247
246
?46
.4
.4
.3
.6
5
1.5
206
107
7.6
.36
.36
.36
.37
.37
.50
1.04
22.02.02
(NM/L)
0
.1
.1
.1
.1
.7
.02
.02
.01
.02
.02
.16
.03
.0?
8.8
22.5
27.3
.03
35.7
39.5
.02
.02
.02
.02
32.?
2.49
57.3
67.5
2.94
it
91.'
13
1 00.7
3.x.0
3.3E
114.1
3.37
43.5
44.5
45.8
157.3
3.12
43.0
57
44
40
3.1R
Bottom Depth:
N20
4718 m
.OZ
,02
7.29
7.27
7.54
12.15
STATION NU"+9ER
D0T
Z
(M)
(:1)
i9 46.0N
3
T
S
SIGHA
(C)
(0/00)
THETA
107
02
r- .8W
SIB
P04
N02
N03
N20
(NM/(.)
(!.1M/L)
1
25.150
25.160
34.3610
2.2.631
209
.2
.34
0
.01
5.62
50
?.3.410
23.39c
3L.51)
23.468
10
2.8
.79
5.8
.23
15.49
99
14.40 0
14.365
34.6-53
2.5.8 80
1F6
24.02.58
27.9
.04
21.49
149
12. 340
12,819
34.806
29.9
2.72
198
12,014
34. 317
33.02.73
27.4
28.5
.42
.02
12.66
14.96
265
12. 0'.0
11.30 0
1.1.2_ 66
3-.. 7F1
26.29K
26.464
26.561
37.1?.83
27.9
.03
13.67
298
10.740
10.703
3+.7?5
26.635
39. 3
2.8
26.4
1.C3
10.15
357
10.11.0
10.06 7
34.674
5
45.5
3.0U
27.2
.36
394
9.345
3-+.665
2
51.3
3.0-
31-.602
57.1
3.1
8.10 6
2.6.9+?
z
61* 3
3.20
27. U?G
i
35.5
.02
18.43
27.084
3
68.9
74.0
3.2L
6.960
34.571
34.55?
34.540
.21
.14
.04
10.52
8.710
29.0
30.0
33.0
609
9.390
9.760
5.160
7.500
7.020
26.79b
26.820
26.473
3.33
.0 3
794
5.+4C
5.371
34.528
27.250
6
93. 0
3.4P
37.5
44.2
20.66
25.03
t ool
4. 491?
4. 40 N
34.551
2 7.40
I10. 9
3.55
46.2
.02
418
3.x10
3.698
3.576 27.502
125. 7
3.47
46.2
.03
D ate:
1/16/77
448
504
566
1
7.44+2
Messenger Time:
26
2016
Bottom Depth:
.02
3438 m
19.58
TATI ON NUM3E P
4
19
1.2N
*
PIT T
S
SIGMA
1".)
tC)
(0/00)
TH:TA
1
26.830
26.830
10
26. X30
3x..129
34..190
30
60
25.970
19.83n
80
16.93C
92.13q
22.178
22.445
24.494
25.513
M)
Date:
1/17/77
26.2
25.963
19.619
16.917
34.17
34.,6,0
34.69
Messenger Time:
104 222.2W
02
i-
5IL
P04
*-- -tUM/L)-.1
.30
.30
0
.:5
3.1
72.9
27.7
210
91
189
5.
1,7
12.9
1.93
22
19.0
1101,33
0917
N02
N03
0
Bottom Depth:
.03
.03
.13
.08
.09
106 m
STATION NUM9E
7
T
(M)
(3)
1
10
25
50
60
75
100
149
199
258
301
387
506
569
598
13
1
002
1
340
D ate:
25,950
26.200
26.290
26.120
25,640
23.250
16.430
13.160
11.990
11,040
10,310
9.100
7.730
7.260
7.010
5.450
4.770
3.850
1/18/77
16
5
PIT
(C)
T
25.950
26.284
26.108
SIGMA
S
(C/00)
THETA
33.047
21.601
33.944
3+.374
110
1.ON
22.171
22.550
1.CW
SIL
02
11-.414
13.139
1.1.864
11.007
10.273
9.056
7.67a
7.203
6.981
5.379
4.488
3.7+4
207
0
.2E
210
0
.?F
170
34.51+7
2b.95
4
34.543
34.540
34,543
34.552
27.052
27.081
9
63
1.9
13.9
.41
.78
1.97
27.12.65
+
31,7
9
35.32.76
2.71
40.0
47.2
60.0
66.8
72.2
91.9
2.84
2.97
3.15
3.22
?.30
13
10741
29
122.9
3.48
3.41
2
3
27. 291
Messenger Time:
.0 4
.0 1
.1
.1
1634
6,01
6.25
7.39
6
3
N20
(NM/L)
20=+
23.434
25.258
26.164
26.435
26.567
26.669
26.810
31:.569
NO?
20?
34,414
34.46?
34.716
34.743
34.70?
34,672
34.592
27.400
27.492
N03
(UM/L)----
0
23.234
PO 1,
3.41:
.1 6
.6 6
.0 5
.5
5.1
22.4
29.0
27.6
28.6
26.9
34.7
33.5
*0 3
1. .8 3
..1
2.0 4
39.5
40.3
46.1
47.7
47.3
Bottom Depth:
.0 2
.0 2
.0 2
.0 2
.0 3
.0 3
.0 3
16.20
32.21
29.07
13.39
17.23
5.42
21.64
2'.54
25.17
23.91
30.08
29,87
26.39
3180 m
STATION \IMjtF
15
6
z9.5N
Z
T
PST T
(M)
()
4C)
(0/00)
TH=TA
S
SIGMA
11z
02
SIi.
P04
N03
(UM/L)
N02
N20
---
(NM/L
1
26.420
26.420
33.318
21.658
211
0
.25
0
.0
1
5.97
25
26.524
33.705
21.916
211
0
.25
0
.0
1
5.68
50
?6.530
26.510
2b.59e
33.798
21.963
209
0
.25
0
.0 2
5.86
75
26.110
26.092
34.298
22.498
2 06
.2
*33
.5
.17
8.10
100
19.530
19.511
34.506
24.455
3F,
9.6
1.67
18.6
.1
0
28.57
125
15.Q40
15.920
34.634
25.504
26
19.02.35
26.3
.0 6
37.52
150
13.510
13.588
3+.779
26.121
15
25.8
2.62
26.0
1.6 0
7.60
175
1?.5111
12.486
34.810
26.367
6
28.4
2.62
26.3
3.6
1
5.74
198
12.1?0
12.093
34.795
26.431
.3
29,6
2.64
27.3
3.2 4
5.25
227
11.700
34.762
26.496
30.9
2.05
28.0
2,7 3
5.86
?_49
11,730
11.520
11,458
34.769
26.526
3196
2.611
34?
1.0.400
10.35E
34.719
26.691
2
34.5
405,
95?[!
9.473
34.650
3
44.3
2.6 0
1.7 9
.7 9
6.24
11.19
5.31
514
8.160
3.10 5
34.r, 95
4
56.5
3.19
32.1
.6
0
3.21
605
7.180
3..561
1
66.1
3.28
38.1
.0 2
18945
796
5.65t
84.6
3.41
4498
.02
30.35
4.'00
34*5?2
34.553
6
999
7.120
5.579
4.617
26.733
26.963
27.078
27.257
27.387
2.75
2,96
28.5
29.5
29.5
1
99.!
3.42
47.3
.0 2
2Q.66
1308
1.976
34.644
27.711
90
150.9
2.99
42.5
.0 2
18.66
?744
2.300
1.760
1.55°
34.674
27.766
119
150.9
2.98
42.3
00 2
Date:
1/19/77
Messenger Time:
1440
Bottom Depth:
3100 m
7
T
(M)
(C)
0
26.820
14
7
STATION NUFt3z-R
PIT
7
(C)
26.820
S
SIGMA
(0/00)
THETA
33.091
21.362
33.094
25
111 52.5W
ON
SIL
02
004
N02
NO3
N20
(NM/L)
(UM/L)-------
6.91
209
209
0
.24
0
.02
0
.22
0
.02
.1
.42
2.4
.23
10.79
15.32.22
27.2
.10
36.67
50
26.200
2.5.26
33.428
21.738
190
75
17. 970
34.596
24.993
37
100
14.3.0
17.957
14.325
3,.761
25. c5:3
3
23.6
2.58
29.5
.06
42.37
123
1.3.120
13.10 3
34,824
2E.255
7
25.8
2056
32.0
.06
33.33
32,6
.20
30.12
32.2
.30
175
11.l?80
11.357
3 ,797
26.478
6
28.02.53
30.12.57
221
11.450
11.421
34.781
26.547
2
32.32.68
31.1
. 665
21.33
254
10.860
10.828
34.733
26.618
3
36.12.79
27.6
2.34
9.20
300
10.210
10.174
34.676
26.639
12
39.7
2.JIL
29.11.44
12.53
393
8.780
3.737
34.600
26.°67
3
52.8
3.07
33.8
.03
21.82
504
7.830
7.778
34.546
2E.971
5,
59.5
3.19
'7.0
.02
26.42
611
6.780
6.721
3+.539
27.115
3
71.4
3.33
6
R9.0
3.48
40.6
45.8
.0?
.03
3+.°16
150
2
3+.552
800
002
4.470
4.36
34 .363
27.420
17
107.3
3.49
47.2
.02
50 1
3. 0 76
2.95:
3..611
27.6O1
57
139.4
3.26
.02
997
2.220
2.078
3+.650
27.707
96
158. 9
3.01
45.3
42.2
514
1.860
1.67 a
39.691
27.763
111
166.4
2.90
40.7
.02
:agea
1/20/77
Messenger Time:
1446
.02
STATION NUM9G
Z
T
(M)
(C)
0
?7.22''
1?
8
PIT
T
111 51.3W
31.7N
SIGMA
02
SIL
P04
N03
N02
(C)
(0/C0)
THETA
------------(UM/L)------ ------
27.220
34.525
22.312
214
0
.25
294,
0
24-
34.5229
24
.1
.1
.02
.03
N20
(NM/L)
6.13
6.10
17.32
4+9
24, 54C
2 4.52
3M.801
23.355
154
73
17.201:
17.188
34.911
25.420
32
15.8
2.2R
26.5
.29
34.53
97
14.?E0
14.246
34.938
26.10E
8
24.6
2.63
29.4
.05
39.21
122
12.990
12.973
34.952
26.380
6
27.12.63
31.6
.03
34.51
5
26.7
2.57
34.2
.04
37.35
10
28.6
2.39
.04
29.7
33.5
34.7
34.3
.03
32.55
27,74
35.7
.03
30.09
35.6
.03
27.29
3.953
146,
171
11.510
11.737
34.9-9
26.609
195
219
11.390
11. 365
34.944
26.684
249
10.920
10.88 9
34 .9 39
292
10.474
379
10.510
9.+50
506
596
9
31. 1
2E .76 8
11
31. 3
34.9?7
26.837
1:
33.7
2.58
2.62
2.57
2.66
9.406
34.916
27.006
2
43.4
2.92
35.0
.12
26.73
8.2.60
8.206
3=.903
27.197
3
53.2
3.09
37.2
.02
29.19
7.260
7. 200
27.327
3
25.12
46.2
.03
28.47
20
47.2
.03
24.22
6U
3.25
3.39
3.39
3.21
.03
27.641
27.820
64.7
52.2
98.4
131.5
39.8
4.637
3.107
3i..A93
34.892
34.392
34.903
45.0
.02
21.29
1.670
34.920
27.1955
112
162.2
2.8P
41.0
.03
16.45
34 .9 40
78a
987
4.770
1490
1998
3.220
2.310
2494
1.450
Date:
1/21/77
6
Messenger Time:
1320
.0.3
Bottom Depth:
3290 m
STATI ON NU'"3C 4
POT T
7
(M)
0
()
27.210
10
9
(C)
27.210
S
SiIMA
(0/U0)
TH TA
33.142
21.276
33.141
25
111 52.3W
45.1N
SIL
02
P04
N02
N03
-------
- ---(UM/L)
20R
0
.19
.1
0
205
0
.19
.1
0
2.7
.93
9.1
17.6
2.41
29.6
.18
17
1.0
50
24.910
24.899
33.971
22.b17
75
17.020
33.698
24.527
21
100
14.3CC
17.007
14.285
34.795
25.937
4
23.22.57
32.4
.03
6
26.8
2.53
34.8
.02
34.323
125
N20
(NM/L)
6.34
15.84
+1.52
149
12.00
12.260
34.319
25.413
7
27.5
2.53
34.8
.03
35.48
174
12.040
12.017
34.811
26.458
10
27.9
2.52
'
29.9
2o 55,
34.8
35.0
.03
.02
33.91
31.32.38
33.8
.05
34.741
198
233
11.400
11.370
3+.774
?6.551
1-48
1J.LC
10.809
34.703
26.6+9
1
31.9
2.5E
35.0
.02
30.77
719,
10.58^
34.738
?E.673
17
34.12.63
35.6
.02
32.48
34.675
26.802
6
+3.6
2.90
35.E
.02
29. ?9
L+
52.8
3.11
36.2
.16
28.32
67.7
3.32
41.5
.02
29.15
11
85.4
3.47
47.3
.02
29.54
27.410
33
101.8
47
27.58'
E,1
132. P
9A
155...
163.9
3.41
3.21
3.01
2.85
.02
.01
.62
.01
27.35
21.54
13.50
16.10
393
9.550
10.542
9.504
497
8.380
8.326
34.615
26.543
616
6.Q35
F.870
?..574
27.12S
34.563
794
505
4.600
3.170
2.230
1.050
ate:
1/22/77
908
496
014
D
4.517
3.050
2.086
1.669
3+.568
34.608
34.658
3+.677
?7.713
27.761
113
Messenger Time:
1316
44.9
42.9
41.0
Bottom Depth:
3750 m
STATION 1U
T
POT T
(M)
(II
(C)
3
SIGMA
(0/0 )
'HF'TA
105 FF.7w
02
SIL
P04
N03
N20
N02
(U'/L)------------
(IN M/
0
77.000
27.000
33.178
21.370
20q
.4
.2F
0
.00
6. r" 7
50
20.570
3...,65
8.8
1.71
20.2
.146
25.71
13.16 0
5
2 4. 5
2.54-
33.0
.03
36.92
150
11. °f' 0
34.907
24,22E
26.251
26.466
87
10 0
20.5E0
13. 146
11.960
34.4
.02
198
11.33C
11.305
34.775
26.564
19
28.22.53
28.22.49
34.0
.03
26t
10.770
10.737
34.766
26.660
30
2941
'4.0
.28
296
10.180
10.1.4
3L.717
26.726
11
2.71
35.6
.0+
29.05
31+8
9.5C0
9.560
34.679
26.796
13
30. 5
35. 0
41.7
2.03
33.8
.03
27.15
397
3.700
8.74E
3t,.E39
2E. E96
3
48.9
54.0
58.4
3.17
34.6
.08
27.05
3 . 16
*0 2
3.24
36.3
38.0
.02
27.21
29.12
65. 6
69. 1
3.32
40.5
.03
26.14
3.35
3.38
e03
30.44
.03
.02
.02
30.59
27.90
.03
27.C2
34.b23
445
490
34.8 36
7,730
7.670
34.602
2
27.030
34.591
845
22
3
605
6.730
6.672
34.574
27.150
3
66A
Eqr
28C
13C
E.218
3-.775
27,211
1.
5,867
34.566
27.249
7
73.7
71,2
79',
5.420
5.351
34.576
27.322
14
94. 9
3.42
42.2
43.8
45.8
46.5
1001
x+.390
4.309
34,57q
27.441
33
103.8
3.40
46.3
)ate:
1/24/77
Messenger Time:
0903
3.41
Bottom Depth:
32.85
3199 m
18
7
42.5N
STATION NUM9E;
7
T
POT T
(M)
(;,)
(C)
105 59.54
13 5E.GN
11
SIGMA
S
(6/00)
THETA
P04
NO2
N03
------
(UM/L)
N20
(NM/L)
.2
.2'
0
0
6.18
0
.24
0
0
to 44
125
17.21.20
12.1
.55
25.357
16
17.22.44
30.0
.G8
26.039
13
23.32.59
30.6
.12
0
27,270
27,270
33.295
21.36
50
27.030
27.019
33.294
21.455
20
75
22.730
22,714
34.364
23.555
100
16.770
16.75?
34.69's
125
l';9970
13.952
3«.770
34.817
150
SIL
02
38.72
L.
25.
2.61
32.8
.03
35.77
200
12.000
11.973
34.301
2E.459
2
2R.8
2.65
32.6
.21
27.41
?60
11.370
11.33E
34,771
26.555
3
30.9
2.67
33.4
.03
26.57
307
10.590
10.652
34.753
26.665
.
34.6
2.7R
30.6
2.21
3
43.1
2.97
32.E
.71
3..650
400
16.91
515
9.170
115
3i-.622
26.981
11
600
6.990,
34.566
50 aE u
27.108
27.292
4
R01
3
69.0
86.2
101 *
27..13
13
1506
-,.370
2,900
6.931
5.588
4.486
2.979
3+.624
?7.618
2007
2.170
2.028
34.650
2515
1.420
1.639
34,671
Date:
1/25/77
34.56,4
34.56H
13.01
38.8
44.9
44.7
.02
19.41
. 02
3C. 42
1 04.5
3.3L
3.4p
3.54
56
134.8
3.28
45.2
.64
27.711
93
154,7
3.00
42.4
.03
27.753
114
161.2
2.90
40.9
03
Messenger Time:
1930
. C2
Bottom Depth:
4060 m
STATION NUM9E;z
Z
T
(MI
(^,1
15
12
1C S
7.ON
SIL
02
5
SIGMA
(C)
(0/JC)
THETA
27.2F.:
33.456
33.4..1
?1.1.90
?03
21.550
33.9u
F01T
T
1qw
P04
N03
r:C2
(UM/L)--
.2'
211
.3
.1
21.9'9
201)
.1
13
N20
(NM/L)
r .30
2F
.3
.3
.3
. C2
5.49
.30
.3
u2
7.31
25
27.7 0
27.C
5
27.070
27.054
27.01°
75
?2.410
26.422
34.224
22.334
204
100
17.8E_0
17.843
3-.507
25.022
4(1
14.32.14
25.9
.09
3F.73
125
15.01.1
13.33Q
12.36E
34.71E
17
22.02.35
26.4
.07
3,.7+3
25.759
26.145
10
175
15. EC
13.350
12.390
34.793
26..377
5
26.7
21.9
2.52
2.52
28.5
2.41
47,69
13.44
15.43
200
11.7r0
11.724
3.o 7131
25.491
3
30.9
2.6r
30.5
1.83
14.75
224
11.2F O
11,231
34.746
26.555
33.12.67
29.9
1.5 .
1-.94
261
10.950
10.917
3,-.749
26.60E
7
35.1
2,7r
28.4
2.33
8.24
299
10 330
34.699
37. 7
2. At
30.21.74
9..50
2E.686
26.794
3
401
2
46.3
1+98
7.943
567
e.36C
911
5.'1.0
2.97
3.19
3.32
3.45
4.,, E 0
492
750
2.99u
2.180
1.7x0
30.6
33.4
38.2
45.9
48.6
45.3
43.7
40.9
7.94
9.57
6.68
9.81
29.74
0u4
10.294
9.404
7.889
6.297
5.468
4.459
?.881
2.037
1.549
Date:
1/26/77
0
150
014
3,.643
34.599
34.566
60.E
26. X97
12
3,.663
27.193
27.293
27.414
27.609
2i .721
34.67E
27. 1-70
126
34.5:60
3,.567
3.612
2
15
5
99
71.2
89.2
106.6
139.0
155.9
163.4
Messenger Time:
1704
2F
3.51
3.2E
3.02
2.92
0
.02
.61
..r
.35
. C2
01
.01
.01
.02
21. E1
Bottom Depth:
3330 m
18.18
16.40
STAT TON NUM3FP
13 55.511
13
103 15.9W
SIL
02
T
POT T
3
SIGMA
(M)
(^)
(G)
(0/00)
THETA
27.520
27.220
27.520
?7.214
210403
21n
.1
22.511
209
0
.28
.2F
27.1 R0
27.16 c
20.+.21
33.450
33.456
33.6'4:
34.413
34.117
34.330
34.801
21. 6.52
209
0
.2,
?4.223
76.n9F
26.358
89
3-.'53
26.577
34.710
34.658
26. E50
31, .604
26* c?7
3
34.5F5
27.0,2
4
0
24
49
98
148
21?_
?0.440
13.129
12.640
13.398
12.611
241
291
345
11.180
10.590
11.143
10.547
389
601
8.430
7.170
Date:
1/27/77
514
3.374
7.110
N02
N03
P04
7_
(UM/L)
7
23.4
25.8
F,
23.
2
3
32.6
2.53
2.49
2.54
2.68
36.32.77
3
Messenger Time:
10.31.69
43.0
55.4
67.8
1402
?.9L.
3.1k
3.28
.1
0
0
20.8
32.1
33.2
33.5
31.6
29.6
29.7
32.0
38.1
Bottom Depth
.01
.01
.01
.07
.03
.03
.03
.70
2.06
.99
.60
.07
3180 m
22
STATION NUMBER
THETA
-------------(UM/L)----
?_1. C.36
217
2r-.113
84
2f_. 103
14
26,760
26.760
50
17.94C
13.890
17,31
33.830
3».713
13. 87S
3.839
Date:
1/29/77
N03
(C/DU)
0
100
PO+
02
Messenger Time:
1426
Bottom Depth:
1
(C)
SIL
STGMA
S
1
()
T
Q
(M)
POT
7
T
7
03 28.°W
9 56.DN
14
3012 m
STATION NUM3ER
7
T
(M)
(")
0
25..20
150
13.420
12.250
11.950
200
11.70
311
10.E5f1
349
1 004
10.110
9.520
8.770
7.980
7.210
6.520
5.440
4.540
Date:
1/30/77
50
100
399
458
498
555
E12
818
15
(1)
POT T
(C)
7
S
97 49.5W
P04
SIL
46.4N
SIGMA
02
(8/00
THETA
25.420
13.413
12.237
11.330
11.604
10.611
3+..117
22.56q
217
34.759
34.789
34.312
34.819
26.14'
31
4.7
23.4
26.399
26.495
46
26.5
49
26.02.21
26.542
41
26.9
340762
25
32.E
10.3°
21
35.32.60
9.573
5.719
7.928
7.155
6.761
34.728
34.709
34.662
34.627
34.613
34.603
26.633
26.745
26.517
5.36
34.576
4.45°_
34.586
2.519
27.013
27.114
27.160
27.318
27.410
Messenger Time:
N03
--- -
(U?":/L)
7
40.9
3
41? .5
3
6
10
30
36
1837
58.7
63.1
65.6
84.4
101.6
.a1
2.29
2.38
2.26
2.51
2.90
3.03
3.18
3.21
3.22
3.28
3.28
N02
7.5
30.9
32.5
31.1
32.4
35.0
35.2
35.7
34.9
34.4
41.1
43.6
45.5
45.3
Bottom Depth:
.22
.17
.06
.03
.21
.03
.03
.03
.06
1.13
.02
.02
.03
.02
3329 m
STATION NUM3FR
15 (2)
7
87 47,3w
46.?N
7
r
(M)
(C)
(C)
(0/00)
THETA
14.093
3+.799
26.024
100
25.07C
14,100
12.670
200
1l.7Ffi
.398
9.^600
450
5.485
34.5 T4
32.9
+.427
34.578
27.302
27.427
21
011
3.770
7.9F0
7.120
6,AF0
5.560
4.510
36
99.1
504
3.270
3.156
34.617
27.587
66
000
2.260
2_.117
3:.657
27.706
498
1.A50
1.930
1.570
1.603
34.657
34.665
0
50
516
550
604
900
000
°OT
T
S
SIGMA
02
SIL
N03
PU4
(L14/
N02
1----
1.30.8
3.29
3.33
3.15
45.3
45.1
42,4
.02
.01
.02
96
152.4
2.98
41.1
.20
27.74;
109
27.756
110
149.1
14x.2
2.90
2.87
40.2
39.2
.03
.06
323
34.681
119
165.6
2.83
39.4
.02
325
34.678
117
165.2
2.83
39.2
.02
D ate:
1/31/77
Messenger Time:
1057
Bottom Depth:
330 m
Table
A Summary of Weather Conditions, Cruise WELOC-77-I
1.
Station
1
Date (Day in Jan.
77)
12
10
2
3
4
5
6
7
8
9
14
16
17
18
19
20
21
22
24
13
12
1,
25
26
15(1)
14
27
15(2)
29
30
31
1057
Hour (Messenger T ime)
1345
1653
2016
0917
1634
1440
1320
1320
1316
0903
1930
1704
1402
1426
1837
Barometer (mb)
1014.8
1015.6
1012.9
1014.8
1014.1
1012.4
1013.2
1012.5
1013.4
1012.0
1012.6
1009.1
1011.2
1010.2
1008.6
1011.0
Air Dry Temp. (°C
13.4
16.8
25.2
25.1
20.6
24.5
26.0
28.5
28.5
26.8
27.3
28.1
27.2
28.3
26.0
26.6
Air Wet temp.
12.2
13.5
22.1
22.4
20.3
22.9
23.1
25.2
25.0
24.1
24.2
26.1
23.1
24.0
24.4
25.3
(°C
10/10
10/10
5/10
7/10
12
12
12
115
060
025
020
10
12
4
12
13
2
0
2
12
0
4
2
090
320
350
355
130
130
020
020
4
4
4
4
3
3
2
4
4
7
8
7
7
7
8
8
4
9
4/10
12
12
12
15
070
060
065
010
18
24
12
14
0
13
5
320
110
4
7
8/10
0/10
20
40
14
12
2
10
10
12
280
330
345
030
000
080
105
Wind Velocity (K)
24
10
22
10
5
2
Wire Angle
10
4
8
0
5
2
280
290
300
160
340
Wave Height (Ft)
3
4
3
3
4
Wave Period (Sec)
5
7
10
8
7
Visibility (Miles
Wind Direction
Wave Direction
10/10
10/10
3
2//04/10
5/10
10/10
4/10
Cloud Amount
10/10
12