HMSU
C
856
.07
no.159
cop.2
Current Meter Data from. the Samoan
Passage Experiment:
World Ocean Circulation Experiment Current Meter Array PCM-11.
September 1992 - February 1994
175°E
180°E
175°W 170°W 165°W 160°W 155°W 150°W 145°W
0°
0°
5°S
5°S
10°S
10°S
15°S
15°S
20°S
175°E
20°S
180°E
175°W 170°W 165°W 160°W 155°W 150°W 145°W
by
R. Dale Pillsbury, Daniel L. Rudnick, J.M. Bottero, G. Pittock, D.C. Root,
J. Simpkins III and R. E. Still
National Science Foundation
OCE-9496015
Data Report 159
Reference 95-1
January,1995
College of Oceanic and Atmospheric Sciences
Oregon State University
Corvallis, Oregon 97331
MARILYN MM GJ1N L4MRY
E SC%Et1CE CENT
HATt IEL' ? 4
A }y
0E
NEWPHxU, it i.uON 9-1365
FED Pr
IQ-qt;
Current Meter Data from the Samoan
Passage Experiment:
World Ocean Circulation Experiment Current Meter Array PCM-11.
September 1992 - February 1994
by
R. Dale Pillsbury, Daniel L. Rudnick, J.M. Bottero, G. Pittock, D.C. Root,
J. Simpkins III and R. E. Still
National Science Foundation
OCE-9496015
Data Report 159
Reference 95-1
January, 1995
College of Oceanic and Atmospheric Sciences
Oregon State University
Corvallis, Oregon 97331
Table of Contents
Introduction .................................................................................
1
Sampling and Processing Information ........................................
1
Data Presentation ........................................................................
4
Acknowledgments .......................................................................
5
References ...................................................................................
5
Data Presentation
Mooring 1 ....................................................................................
7
Mooring 2 .................................................................................... 23
Mooring 3 .................................................................................... 39
Mooring 4 .................................................................................... 63
Mooring 5 .................................................................................... 85
Mooring 6 ....................................................................................107
175°E
0°
180°E
175°W
170O
i
165°W 160°W 155*W 150°W 145°W
5°S
10°S
10°S
£amoa
J
9i
20°S r
175°E
180°E
175°W
0
170°W
II
Tahii?r
1650W
160OW
1550W
150*W
-6000-5500-5000-45004000-3500-3000-2500-2000-1500-1000 -500
DEPTH
the Samoan Passage plotted on top of
20°S
1450W
V
Figure 1. Mooring locations (white circles)
ETOPIO5 bathymetry.
15°S
0
INTRODUCTION
The Samoan Passage experiment was designed to determine the northward transport of
abyssal water through the Samoan Passage (10°S, 170°W). This topographic constriction
forms the major connection for deep (>4000 m) interbasin flow between hemispheres in
the Pacific (Figure 1). This report presents current meter data from the six subsurface
moorings deployed in the Samoan Passage in September 1992 and recovered February
1994.
The six subsurface moorings were deployed along a transect in the Samoan Passage
(Figure 2). A total of twenty-seven current meters were attached, each measuring
horizontal current and temperature, with the upper two meters on each mooring
measuring pressure. All instrumentation was recovered. Instrument 5872, the top meter
on mooring two experienced an electronic board failure after 5 days and stopped
recording data. The pressure sensor on instrument 4412, 2990 m on mooring 1, abruptly
changed levels several times, and the temperature record from instrument 5856, 2970 m
on mooring six, malfunctioned after 9 months. The compass on instrument 7769 (4900 in
on mooring three) failed its post-cruise calibration. It appears that the failure occurred
approximately one-fourth of the way through the deployment. Because the data are
vector-averages, both speed and direction are suspect. The quality of the remaining
records was excellent.
The Samoan Passage current meter array contributes to the World Ocean Circulation
experiment and is identified by that program as PCM- 11.
SAMPLING AND PROCESSING INFORMATION
All moorings were instrumented with Aanderaa RCM 8 current meters (equipped with RCM-5
Savonius rotors and vanes) to record speed, direction, and temperature, with some meters
equipped to record pressure.
The current meter recording interval was set to 60 minutes. During the recording interval the
number of rotor revolutions and compass directions are sampled 50 times. The combined data
represents a current vector, its magnitude given by the rotor revolutions and its direction by the
compass reading. The vector is resolved into two components, East-West and North-South.
Successive components are added and intermediately stored. When the selected recording
interval has elapsed, the resulting vector-averaged speed and direction are calculated and
recorded (Aanderaa Instruments, 1990).
2
2
1
1
3
.
.
.
4
.
5
6
I
-3000 -
I
-4000
CL
LI
A
0
1
I
-5000
-
0
100
200
Distance (km)
Figure 2. The current meter array in the Samoan Passage and the underway bathymetry.
The perspective is looking northward and mooring numbers are indicated above. The
squares indicate locations of current meters.
3
The nominal threshold of the Savonius rotor on the OSU Buoy group Aanderaa current
meters is 1.86 cm/sec. In processing, a zero in the speed sensor is set equal to 0.93
cm/sec, i.e., half the threshold. Temperature, and pressure are instantaneous
measurements at the end of the sample interval.
Data from the current meter data storage units are stored as binary numbers in the range
[0, 1023] and each data record is assigned a time in Universal Coordinated Time (UCT).
This product is termed as the dated raw file. The sensors are routinely calibrated before
and after deployment. The dated raw file, together with the calibration information, is
then processed into metric units. Smith, et al. (1986) reviewed the calibration procedure
used by the OSU Buoy Group with Aanderaa current meters. To form the Low-Passed
records, the hourly records were filtered with a 180 + 1 + 180 point Cosine-Lanczos filter
with half-amplitude at 100 hours and half-power at 115 hours. The data are then
resampled at 6-hour intervals.
Depths were obtained by one of two methods. Meters equipped with pressure sensors were
assigned depths corresponding to the minimum pressure recorded. The minimum pressure was
determined from unfiltered data. Conversion from pressure units to depth units, i. e. from
decibars to meters, was done with a relationship developed by Professor J. L. Reid of Scripps
Institution of Oceanography:
Z(m) = (0.992446)P - (2.28717x10-6)P2 + (2.08213x10-11)p3
This equation is based on a world average density profile. The depths of meters that did
not have pressure sensors were estimated from those that did using the mooring line
lengths as determined by a computer model that calculates line tension and the amount of
stretch. Again, minimum rather than average or maximum depths were estimated.
Bottom depth was determined by an anchor survey conducted after deployment.
Occasional problems appear in the data as isolated spikes, absence of data, or short runs of
unexplainably erratic data. Problem areas of only a few cycles were corrected by linear
interpolation; those longer than a few hours were bridged. The bridging technique employs
Anderson's (1974) algorithm for a predictive filter which utilizes the spectral characteristics on
both sides of the gap (Smylie et al. 1973; Ulrych et al. 1973). One speed record, instrument
5862 (3980 in on mooring one) was bridged in lines 7570 through 7605 (1200 4 Aug 93 to 2300
5 Aug 93) when the speed record abruptly fell to zero and remained there. See header page for
details. All corrections to the data are noted on the header pages at the beginning of each
mooring section.
4
DATA PRESENTATION
Each of the current meter records is described in this report. The descriptions include
start times and stop times, statistics for each variable, frequency histograms and spectra,
and some representative time series plots of the velocity, temperature, and pressure
observations.
The data are organized by mooring location. Each section begins with a mooring diagram
followed by a header page showing information about the mooring, start and stop times for data
and comments about the quality of each record. Any deletions or corrections to the data are
listed here.
The page of statistics gives the mean, variance, and extrema for speed (s), eastward (u) and
northward (v) components of the current, temperature (T), and pressure (P). Statistics for both
unfiltered and filtered (Low-Passed) data are provided.
The presentation of the hourly unfiltered data begins with progressive vector diagrams,
histograms, and kinetic energy spectra. The progressive vector diagrams are obtained by placing
the velocity vectors tail-to-head to show the path that a particle would travel in a perfectly
homogeneous flow. The squares mark the beginning of each month. The histograms of speed,
direction, temperature, and pressure show the frequency of occurrence versus amplitude. LowPassed data are presented next as time series plots. There are two series of plots for each
current meter mooring: all variables (velocity vectors, u, v, temperature, and pressure at each
depth on the mooring), and each variable at all depths. Velocity sticks are plotted every 48
hours.
5
ACKNOWLEDGMENTS
The funds for this program were provided via grant OCE-9496015 from the National Science
Foundation, Physical Oceanography Program which is gratefully acknowledged. We appreciate
the assistance and cooperation given by the masters and crews of the R/V Knorr and R/V
Thomas Thompson, and by our seagoing colleagues and companions on the deployment and
recovery cruises.
REFERENCES
Aanderaa Instruments. Technical Description No.159, RCM 7&8, Recording
Current Meter, Aanderra Instruments, Bergen, Norway.
Anderson, N., 1974. On the calculation of filter coefficients for maximum entropy
spectral analysis. Geophysics 39:69-72.
Smith, R. L., G. Pittock, J. Fleischbein and R. Still. 1986. Current measurements
from moorings off Northern California: September 1984 - July 1985. Oregon
State University, College of Oceanography, Corvallis. Data Report 121,
Reference 86-6.
Smylie, D. E., G. K. C. Clarke and T. J. Ulrych. 1973. Analysis of irregularities in
the earth's rotation. Methods in Computational Phys. 13., 391-430.
Ulrych, T. J., D. E. Smylie, O. G. Jensen and G. K. C. Clarke. 1973. Predictive
filtering and smoothing of short records by using maximum entrophy. J.
Geophys. Res. 78, 4959-4964.
7
M ooringg SAMOA 1
09° 41.12' S
Latitude:
Longitude: 170° 28.13'W
OSU Radio Buoy
2 m 1/2" Chain
25 m 3/8" VLS
0047 23 Sep. '92
Recovered: 1808 24 Feb. '94
Installed:
10 -17" Glass Spheres
1 m 3/8" VLS
2990 m a 4412
Aanderaa RCM-8
969 m 3/8" VLS
Q 4 -17" Glass Spheres
I m 3/8" VLS
3980 m 0
5862
Aanderaa RCM-8
236 m 3/8" VLS
200 m
11 m
25 m
4 -17" Glass Spheres
I m 3/8" VLS
4230 m El
6974
Aanderaa RCM-8
50 m 3/8" VLS
2 -17" Glass Spheres
BACS 8242 Release
15 m 5/8" Nylon
Anchor
4343m
8
Mooring SAMOA 1.
Position:
Depth of Water:
Mooring Set:
Mooring Retrieved:
Data Interval:
09° 41.12 S
170° 28.13' W
4343m
0047 U.C.T. 23 September 1992
1808 U.C.T. 24 February 1994
0300 U.C.T. 23 September 1992 - 1700 24 February 1994
Instrumentation:
Depth m
2900m
3980m
4230m
RCM8 Serial No./Sequence No.
4412/29
5862/20
6974/28
Instrument 4412/29 recorded speed, direction, temperature and pressure every 60
minutes. The pressure record is unreliable. It changes levels several times, up about 20
meters on 5 January 1993, down about 100 meters on 9 Jan 1993 (from 2800 m to 2900
m), and down again on 14 Dec 1993 (from 2900 m to 3025m).
Instrument 5862/20 recorded speed, direction, temperature, and pressure every 60
minutes. The speed record was bridged in lines 7570 through 7605 (1200 4 Aug 93 to
2300 5 Aug 93). A speed drop out (zeros) occurred at this time. Afterward the record
looked normal and is presumed to be accurate. The cause of the drop out is unknown
Instrument 6974/28 recorded speed, direction, and temperature every 60 minutes. Good
record, no corrections.
9
SAMOA 1.
Statistics, Hourly Unfiltered Data
2990 meters at SAMOA 1. 23 Sep 92 - 24 Feb 94. Tape 4412/29.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.93
-8.56
-13.14
1.61
4.43
0.78
2.01
-1.14
1.67
14.89
11.56
10.17
1.71
12471
12471
12471
2797.93
2912.55
3009.46
44.60
3.10
3.49
0.01
12471
12471
3980 meters at SAMOA 1. 23 Sep 92 - 24 Feb 94. Tape 5862/20.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.93
-12.16
-6.31
8.54
-2.44
7.40
20.35
8.56
20.06
2.84
2.89
3.46
12471
12471
12471
1.12
1.24
4056.18
1.44
4056.32
0.05
0.90
12471
12471
4050.37
4230 meters at SAMOA 1. 23 Sep 92 - 24 Feb 94. Tape 6974/28.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-9.28
-4.56
7.15
1.77
6.18
20.35
12471
12471
12471
1.02
1.07
2.62
2.90
2.88
0.01
13.21
20.24
1.12
12471
10
SAMOA 1.
Statistics, Low Passed Data
2990 meters at SAMOA 1. 30 Sep 92 - 17 Feb 94. Tape 4412/29.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.33
-2.50
-4.69
1.65
2851.53
sd
1.02
1.34
1.72
num
2018
2018
2018
1.67
max
4.70
3.52
4.42
1.68
0.01
2912.22
3009.46
41.88
2018
2018
mean
2.39
0.81
-1.16
3980 meters at SAMOA 1. 30 Sep 92 - 17 Feb 94. Tape 5862/20.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.69
-4.44
-1.11
1.17
4050.98
mean
7.87
-2.43
7.37
1.24
4056.23
max
sd
11.38
1.74
0.82
2.04
num
2018
2018
2018
0.04
0.58
2018
2018
0.17
11.38
1.39
4056.32
4230 meters at SAMOA 1. 30 Sep 92 - 17 Feb 94. Tape 6974/28.
min
mean
max
sd
num
1.56
0.43
1.42
2018
2018
2018
1.04
1.07
9.90
2.74
9.64
1.10
1.38
1.38
6.43
1.76
6.16
0.01
2018
Speed, cm/sec
U, cm/sec
V, cm/sec
0.66
Temp, deg c
11
NT
Mooring SAMOA 1. 23 Sep 92 - 24 Feb 94.
100 km
-100
200
100
300
400 km
2990 m at SAMOA 1.
+-300
+-400
T 3600 km
T 3000 km
+3000
+-500
2400
1-600
1800
1200
600
-600
-1200
1
600
1200 km
600 km
-600
1-600
3980 m at SAMOA 1.
1 -600
4230 m at SAMOA 1.
2990m at SAMOA 1. 23 Sep 92 - 24 Feb 94. RCM 4412/29.
,Mean
0.40 T
0.30 t
0.20 t
0.10 t
0.00
i
0
I
4
i
0.01 t
III
8
I
12
i
i
0.00
i
20
16
1
1
0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
1.4
1.5
1.6
1.7
1.8
Temperature, degrees C.
1.9
2.0
3980m at SAMOA 1. 23 Sep 92 - 24 Feb 94. RCM 5862/20.
,Mean
0.20
0.30 T
0.25
0.15
0.20
0.10
0.15
0.10
0.05
0.05
-1
0.00
0
4
8
12
16
20
0.00
I
0
24
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
,Mean
1.00
0.40 T
0.90
0.80
0.30 t
0.70
0.60
0.50
0.20
0.40
0.30
0.10 t
0.20
0.10
0.00
0.00
1.0
1.1
1.2
1.3
1.4
Temperature, degrees C.
1.5
1.6
4016
4032
4048
4064
Pressure, decibars
4080
4096
4230m at SAMOA 1. 23 Sep 92 - 24 Feb 94. RCM 6974/28.
,Mean
0.40-r
0.20
0.30 +
0.15
0.20 t
0.10
0.10 t
0.05
0.00 ;
0
i
i
4
i
i
i
8
i
12
r-==l
i1
i
16
0.00
24
20
0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
1.0
1.1
1.2
Temperature, degrees C.
1.3
1.4
Mooring Samoa 1. Unfiltered current.
4230m
3980m
2990m
103
103
T
2
102
102
101
z
100
100
w
x
w
Y
10-2
10-2
10 -2
T
10-3 "
10-3
10 3
111111111
10-2
10-'
100
101
Frequency, cycles per day
102
95 pct
95 pct
95 pct
10
11/11/11
10-3
10-2
10-1
100
101
Frequency, cycles per day
102
'
10-3
' 11""'
'
10-2
' 11""'
'
10-1
' 11""'
II 1111111
100
101
Frequency, cycles per day
I
102
TN
10.0
I
7.5
Velocity
E
5.0
U-component
2.5
0.0
-2.5
-5.0
V-component
1.70
Temperature
1.68
U
1.66
1.64 -o
I
S
I
0
I
I
N
1992
D
I
I
J
F
I
I
M
A
I
M
I
I
J
J
I
A
I
I
S
0
1993
2990m at SAMOA 1. Low-Passed Data.
I
I
N
D
I
J
1.62
F
TN
15.0
12.5
Velocity
10.0
7.5
5.0
2.5
0.0
-2.5
2.5
U-component
0.0
10.0
0
-2.5
-5.0
-7.5
V-component
7.5
5.0
2.5
0.0
-2.5
1.40
1.35
Temperature
1.30
1.25
1.20
1.15
4040
A_j
Pressure
4050
4060
I
4070
S
0
I
I
I
N
1992
D
I
I
J
F
I
I
M
A
I
I
M
J
J
A
S
0
1993
3980m at SAMOA 1. Low-Passed Data.
I
I
I
I
I
N
D
I
J
F
0
a)
TN
12.5
10.0
Velocity
7.5
U)
5.0
U
C)
2.5
1/11111
0.0
-2.5
fill/
5.0
U-component
2.5
0.0
10.0
-2.5
-5.0
V-component
7.5
a)
5.0
E
2.5
0.0
-2.5
I
S
I
I
0
N
1992
D
1
J
I
F
1
I
M
A
M
J
L_
1
J
A
I
I
S
0
1993
4230m at SAMOA 1. Low-Passed Data.
I
I
N
D
I
J
F
3980m
-17
10.0
4230m
7.5
5.0
2.5
Ow//)
0.0
-2.5
S
0
N
1992
D
J
F
M
A
M
J
J
1993
A
S
0
N
D
J
F
7.5
a
5.0
2990m
\ 2.5
0.0
-2.5
5.0
0
2.5
2.5
3980m
V
4230m
C
I
0.0 0
-2.5
-5.0
-7.5
\ 0.0
-2.5
-5.0
S
0
I
I
I
N
1992
D
I
I
J
F
I
M
I
A
I
M
I
J
I
J
I
A
I
I
S
0
I
I
N
1993
U-Component at SAMOA 1. Low-Passed Data.
D
I
J
F
- 2990m
10.0
0
Q)
E
U
7.5
5.0
2.5
0.0
-2.5
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
N
1993
V-Component at SAMOA 1. Low-Passed Data.
D
J
F
2.00
I
I
1.00
S
D
J
M
A
M
J
J
A
S
1993
Temperature at SAMOA 1. Low-Passed Data.
D
J
23
Mooring SAMOA 2
OSU Radio Buoy
2 m 1/2" Chain
09° 50.34'S
Latitude:
Longitude: 169° 59.23'W
25 m 3/8" VLS
10 -17" Glass Spheres
1 m 3/8" VLS
4000 m 0
5872
Aanderaa RCM-8
Installed: 0348 22 Sep. '92
Recovered: 2251 24 Feb. '94
335 m 3/8" VLS
() 4 -17" Glass Spheres
1 m 3/8" VLS
4340 m 0 17162
Aanderaa RCM-8
283 m 3/8" VLS
Q 4 -17" Glass Spheres
1 m 3/8" VLS
4640 m 0
7212
Aanderaa RCM-8
234 m 3/8" VLS
Q 4 -17" Glass Spheres
1 m 3/8" VLS
T
4890 m- 0 17217
Aanderaa RCM-8
82 m 3/8" VLS
2 -17" Glass Spheres
BACS 8242 Release
15 m 5/8" Nylon
Anchor
5004m
24
Mooring SAMOA 2.
Position:
09°50.34' S
169° 59.23 W
Depth of Water:
Mooring Set:
Mooring Retrieved:
Data Interval:
5004m
0348 U.C.T. 22 September 1992
2251 U.C.T. 24 February 1994
0600 U.C.T. 22 September 1992 - 2200 24 February 1994
Instrumentation:
Depth m
4000m
4340m
4640m
4890m
RCM8 Serial No./Sequence No.
5872/15
7162/30
7212/31
7217/27
Instrument 5872 recorded speed, direction, temperature, and pressure every 60 minutes
until 1700 27 September 1992 when an electronic board failure occurred. Data from this
meter are not presented in this report.
Instrument 7162 recorded speed, direction, temperature and pressure every 60 minutes.
Good record, no corrections.
Instrument 7212 recorded speed, direction and temperature every 60 minutes. Good
record, no corrections.
Instrument 7217 recorded speed, direction, and temperature every 60 minutes. Good
record, no corrections.
25
SAMOA 2.
Statistics, Hourly Unfiltered Data
4340 meters at SAMOA 2. 22 Sep 92 - 24 Feb 94. Tape 7162/30.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.93
-5.57
-6.15
1.02
9.63
22.94
17.94
20.12
3.62
3.64
12497
12497
12497
4392.10
4407.88
1.14
4409.89
0.02
2.84
12497
12497
6.44
6.12
1.07
3.71
4640 meters at SAMOA 2. 22 Sep 92 - 24 Feb 94. Tape 7212/31.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.93
-7.35
-6.64
mean
8.56
5.66
5.04
1.04
1.06
max
22.66
18.91
21.55
1.11
sd
num
3.47
3.57
3.89
12495
12495
12495
0.01
12495
4890 meters at SAMOA 2. 22 Sep 92 - 24 Feb 94. Tape 7217/27.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-9.06
7.30
4.66
3.53
1.08
25.82
3.11
3.71
3.88
12498
12498
12498
0.01
12498
-9.34
1.06
17.43
25.73
1.12
26
SAMOA 2.
Statistics, Low-Passed Data
4340 meters at SAMOA 2. 29 Sep 92 - 17 Feb 94. Tape 7162/30.
min
mean
max
Speed, cm/sec
U, cm/sec
V, cm/sec
2.07
0.55
1.78
8.87
6.39
6.11
13.00
10.28
8.38
Temp, deg c
Pressure, db
1.05
1.07
4403.93
4407.92
1.10
4409.89
sd
2.27
1.98
1.35
0.01
2.62
num
2023
2023
2023
2023
2023
4640 meters at SAMOA 2. 29 Sep 92 - 17 Feb 94. Tape 7212/31.
max
sd
11.39
8.78
7.50
1.77
0.88
0.17
mean
7.56
5.63
5.01
1.19
num
2023
2023
2023
1.05
1.06
1.09
0.01
2023
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
1.73
1.41
4890 meters at SAMOA 2. 29 Sep 92 - 17 Feb 94. Tape 7217/27.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.38
0.06
-1.22
mean
5.85
4.64
3.48
1.07
1.08
max
9.46
7.93
5.79
1.10
1.56
1.36
1.07
num
2023
2023
2023
0.01
2023
sd
27
Mooring SAMOA 2. 22 Sep 92 - 24 Feb 94.
T 3000 km
-600
600
2400
1800
1200
3000 km
4340 m at SAMOA 2.
1-600
T 1800 km
2400 km
600
1200
1800
4890 m at SAMOA 2.
-600
600
-600
1200
1800
4640 m at SAMOA 2.
2400
3000 km
2400 km
4340m at SAMOA 2. 22 Sep 92 - 24 Feb 94. RCM 7162/30.
I Mean
0.25T
0.20
0.15
0.15
0.10 t
0.10
0.05 t
0.05
0.00 {'-1
0
i
4
I
I
I
i
8
12
I-
i
16
0.00
7
i
20
24
0
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
,Mean
0.70
1.00
0.90
0.60
0.80
0.70
0.50
0.60
0.40
0.50
0.30
0.40
0.30
0.20
0.20
0.10
0.10
0.00
I
0.8
0.9
1.0
i
I
1.1
I
i
I
1.2
Temperature, degrees C.
1.3
i
1.4
0.00
4360
4376
4392
4408
4424
Pressure, decibars
4440
4456
4640m at SAMOA 2. 22 Sep 92 - 24 Feb 94. RCM 7212/31.
,Mean
0.16
0.25 T
0.14
0.20
0.12
0.10
0.15
0.08
0.10 t
0.06
0.04
0.05 t
0.00
i
0
4
i
mar
i
8
12
i
0.02
ii1
-- i
0.00
24
20
16
30
0
90
60
120
150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
I-I
1.0
I
1.1
i
I
i
I
1.2
1.3
1.4
Temperature, degrees C.
4890m at SAMOA 2. 22 Sep 92 - 24 Feb 94. RCM 7217/27.
,Mean
0.60
0.14
0.50
0.12
0.10
0.40
0.08
0.30
0.06
0.20
0.04
0.10 t
0.00 i
0
j
8
r-
16
0.02
i
24
i
32
i
0.00
40
48
0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.85
0.95
1.05
1.15
Temperature, degrees C.
1.25
1.35
Mooring SAMOA 2. Unfiltered current.
4890m
4640m
4340m
102
101
100
w
10-1
Y
10 -2
10-2
10-2
95 pct
95 p ct
10-3
r
10-3
HTnrrii-H
10-2
10-'
100
11111
i
101
Frequency, cycles per day
I f Fliiii
10-3
10-3
102
95 pct
10'4
.
10-3
......,.
10-2
H
10-1
H
100
11
101
Frequency, cycles per day
I
10-3
10-2
10-1
100
101
Frequency, cycles per day
f
102
102
Velocity
Pressure
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Velocity
4-dum,
.0
Ail
V-component
Temperature
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Velocity
'A", VY
wn
"
61,1a
vwwo-
OK
"014 4.10-00
PIC/1-10,0'Ooks
0-
0',
U-component
L7 V-component
Temperature
C
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
z
in O 10 O in q LU
I
N O N 10 N O N
aas/wa
0
0 Ln o Ln 0
O N 10 N O N
0
I
aas/wa
0
0
0
z
35
15.0
12.5
0 10.0
0)
E
0
7.5
5.0
2.5
0.0
-2.5
10.0
4640m
7.5
5.0
0
c°n
2.5 E
0.0
-2.5
10.0
0
7.5
0)
5.0
E
0
2.5
0.0
-2.5
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
N
1993
U-Component at SAMOA 2. Low-Passed Data.
D
J
F
0
15.0
F-I
I
12.5
10.0
4340m
7.5
5.0
2.5
0.0
10.0
-2.5
4640m
7.5
U
5.0
ai
2.5 E
0
0.0
-2.5
10.0
4890m
7.5
5.0
2.5
0.0
-2.5
I
S
I
0
N
1992
VI
I
I
D
J
I
F
I
I
M
A
M
I
I
I
J
J
A
I
I
I
S
0
I
I
N
1993
V-Component at SAMOA 2. Low-Passed Data.
D
I
J
F
1.13
1.03
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
N
1993
Temperature at SAMOA 2. Low-Passed Data.
D
F
39
Mooring SAMOA 3
OSU Radio Buoy s/n 6010T
Latitude:
09° 55.08' S
Longitude: 169° 44.35' W
2 m 1/2" Chain
25 m 3/8" VLS
10 -17" Glass Spheres
2890 m 0
4913
2154 21 Sep. '92
Recovered: 0233 25 Feb. '94
Installed:
1 m 3/8" VLS
Aanderaa RCM-8
968 m 3/8" VLS
4 -17" Glass Spheres
1 m 3/8" VLS
3940 m n
6733
Aanderaa RCM-8
332 m 3/8" VLS
Q 4 -17" Glass Spheres
1 m 3/8" VLS
T
4350 m 0
7209
Aanderaa RCM-8
270
282 m 3/8" VLS
12m
4 -17" Glass Spheres
T
4650 m
1 m 3/8" VLS
a
Aanderaa RCM-8
232 m 3/8" VLS
4 -17" Glass Spheres
1 m 3/8" VLS
4900 m
LI
7769
IAanderaa RCM-8
183 m 3/8" VLS
O
5100 m
LI
4 -17" Glass Spheres
1 m 3/8" VLS
10645
Aanderaa RCM-8
104 m 3/8" VLS
2 -17" G1ass Spheres
BACS 8242 Release
15 m 5/8" Nylon
Anchor
5235m
40
Mooring SAMOA 3.
Depth of Water:
Mooring Set:
Mooring Retrieved:
09° 55.08' S
169° 44.35'W
5235m
2154 U.C.T. 21 September 1992
0233 U.C.T. 25 February 1994
Data Interval:
0100 U.C.T. 22 September 1992 - 0200 25 February 1994
Position:
Instrumentation:
Depth m
2890m
3940m
4350m
4650m
4900m
5100m
RCM8 Serial No./Sequence No.
4913/25
6733/32
7209/29
7215/28
7769/24
10645/6
Instrument 4913 recorded speed, direction, temperature, and pressure every 60 minutes
until recovery. No corrections were made to the record. There is a suspicious section in
the speed record, 21-22 January 93, when the speed sensor may be stuck at about 6
cm/sec. This was not interpolated.
Instrument 6733 recorded speed, direction, temperature and pressure every 60 minutes.
Good record, no corrections.
Instrument 7209 recorded speed, direction and temperature every 60 minutes. Good
record, no corrections.
Instrument 7215 recorded speed, direction, and temperature every 60 minutes. Good
record, no corrections.
Instrument 7769 recorded speed, direction, and temperature every 60 minutes. After Feb
1993 the speed and direction records become choppy and seem to have frequent small
spikes. The velocity record is unreliable after this time. The compass failed its post-cruise
calibration.
Instrument 10645 recorded speed, direction, and temperature every 60 minutes. Good
record, no corrections.
41
SAMOA 3.
Statistics, Hourly Unfiltered Data
2890 meters at SAMOA 3. 22 Sep 92 - 25 Feb 94. Tape 4913/25.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.93
-10.83
-11.36
4.52
0.34
-0.91
1.96
3.30
3.53
12506
12506
12506
0.02
2.20
12506
12506
1.62
1.67
11.44
10.57
11.36
1.73
2916.58
2929.59
2934.69
3940 meters at SAMOA 3. 22 Sep 92 - 25 Feb 94. Tape 6733/32.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.93
-10.00
-11.61
1.26
3988.21
4.48
1.69
1.02
14.02
11.93
1.37
11.63
1.44
4003.85
4006.41
1.89
3.10
3.18
12507
12507
12507
0.02
3.07
12507
12507
4350 meters at SAMOA 3. 22 Sep 92 - 25 Feb 94. Tape 7209/29.
Speed, cm/sec
U, cm/sec
0.93
-4.01
V, cm/sec
-8.44
1.05
Temp, deg c
9.41
7.66
4.68
1.13
25.54
22.62
16.04
1.22
3.68
3.38
3.18
12507
12507
12507
0.02
12507
4650 meters at SAMOA 3. 22 Sep 92 - 25 Feb 94. Tape 7215/28.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
2.29
0.85
-5.67
12.67
11.95
2.75
1.04
1.06
24.67
24.67
14.97
1.08
3.32
3.38
3.11
12507
12507
12507
0.01
12507
4900 meters at SAMOA 3. 22 Sep 92 - 25 Feb 94. Tape 7769/24.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
2.29
-2.32
-8.66
1.06
10.23
9.80
0.21
1.07
21.22
21.20
14.74
1.09
3.04
2.97
2.97
12507
12507
12507
0.00
12507
5100 meters at SAMOA 3. 22 Sep 92 - 25 Feb 94. Tape 10645/6.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.93
0.84
-4.94
12.90
11.84
4.57
1.09
1.09
24.10
23.27
14.00
1.10
3.43
3.30
2.48
12507
12507
12507
0.00
12507
42
SAMOA 3.
Statistics, Low-Passed Data
2890 meters at SAMOA 3. 29 Sep 92 - 17 Feb 94. Tape 4913/25.
min
mean
max
sd
num
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.07
-3.76
-4.22
1.65
2.42
0.38
-0.97
1.31
2024
2024
2024
1.67
5.97
4.82
5.73
1.71
0.01
Pressure, db
2928.65
2929.62
2934.58
1.41
1.69
1.91
2024
2024
3940 meters at SAMOA 3. 29 Sep 92 - 17 Feb 94. Tape 6733/32.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.16
-2.35
-2.60
1.33
2.37
1.66
1.02
1.37
5.26
4.17
3.85
1.39
4000.16
4003.90
4006.41
1.17
2025
2025
2025
0.02
2.28
2025
2025
1.12
1.31
4350 meters at SAMOA 3. 29 Sep 92 - 17 Feb 94. Tape 7209/29.
1.63
8.95
7.63
4.63
15.26
13.57
8.57
2.33
1.95
1.44
2025
2025
2025
1.09
1.13
1.16
0.01
2025
Speed, cm/sec
U, cm/sec
V, cm/sec
5.49
4.49
Temp, deg c
4650 meters at SAMOA 3. 29 Sep 92 - 17 Feb 94. Tape 7215/28.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
7.85
7.18
1.04
1.05
12.24
11.88
2.76
16.42
16.33
5.11
1.70
1.77
0.87
2025
2025
2025
1.06
1.07
0.00
2025
4900 meters at SAMOA 3. 29 Sep 92 - 17 Feb 94. Tape 7769/24.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
7.41
7.34
-2.75
1.07
9.95
9.72
0.16
1.07
13.75
12.88
1.52
1.32
5.14
1.08
2.22
2025
2025
2025
0.00
2025
5100 meters at SAMOA 3. 29 Sep 92 - 17 Feb 94. Tape 10645/6.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
7.94
7.47
2.67
1.09
12.61
11.76
4.54
1.09
18.03
16.78
1.98
1.84
6.62
1.10
0.79
2025
2025
2025
0.00
2025
43
NT
Mooring SAMOA 3. 22 Sep 92 - 25 Feb 94.
200 km
400 km
-200
-600
2890 m at SAMOA 3.
600 km
200
-200
-200
3940 m at SAMOA 3.
400
600
800 km
Mooring SAMOA 3. 22 Sep 92 - 25 Feb 94.
NT
3000 km
2000 km
1000
1000
-1000
-1000
2000
1000
3000
4000 km
2000
3000
4000
5000
6000 km
4650 m at SAMOA 3.
-1000
4350 m at SAMOA 3.
-1000
T 3000 km
1000 km
1000
-1000
1000
000
2000
3000
4000
4900 m at SAMOA 3.
3000
4000
5000 km
-1000
-1000
2000
5100 mat SAMOA 3.
5000
6000 km
2890m at SAMOA 3. 22 Sep 92 - 25 Feb 94. RCM 4913/25.
,Mean
0.20 T
0.06
0.05
0.15 t
0.04
0.10 t
0.03
0.02
0.05 t
0.01
0.00
i
0.0
I
I
I
1.5
I
I
I
3.0
I
4.5
I
I
6.0
I
I
I
I
9.0
7.5
10.5
0.00
0
12.0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
,,Mean
0.90
1.00
0.80
0.90
0.70
0.80
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.10
0.00
F
1.4
1.5
1.6
I
II
1.7
0.20
0.10
I
1.8
Temperature, degrees C.
i
I
1.9
I
I
2.0
0.00
2880
2896
2912
2928
2944
Pressure, decibars
2960
2976
3040m at SAMOA 3. 22 Sep 92 - 25 Feb 94. RCM 6733/32.
,Mean
0.40 T
0.08
0.30 +
0.06
0.20 +
0.04
0.10
0.02
0.00
I
I
i
i
4
0
I
F= ===:l
8
i
12
i
I
16
20
0.00
0
30
60
90
Speed, cm per sec
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
,Mean
0.70 T
1.00 T
0.60 +
0.80
0.50 t
0 . 40
0.70
I
+
0.60
I
0.50 +
0.40 +
0.30 +
0.20
m
I
1.1
0.30 t
0.20 +
0.10 +
0.00
,
0.90
I
I
1.2
I
I
1.3
I
i
I
1.4
Temperature, degrees C.
i
1.5
i
i
1.6
0.00
3952
I
I
3968
i
i
i
3984
i
4000
4016
Pressure, decibars
I
I
4032
i
4048
4350m at SAMOA 3. 22 Sep 92 - 25 Feb 94. RCM 7209/29.
,Mean
0.25 T
0.25
0.20 i-
0.20
0.15 i-
0.15 i-
0.10
0.10
0.05
0.05
0.00
#
0
I
i
4
i
I
8
I
12
I
I
I
I
20
16
--F
I
24
I
0.00
I
28
0
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.85
0.95
1.05
1.15
1.25
Temperature, degrees C.
1.35
1.45
4650m at SAMOA 3. 22 Sep 92 - 25 Feb 94. RCM 7215/28.
,Mean
0.25 T
0.25 T
0.20 +
0.20 +
0.15 +
0.15 +
0.10 +
0.10 +
0.05 +
0.05 +
0.00 h
0
i
4
8
1
1
12
1
16
1-r-r20
+--
0.00
28
24
Z
'
II` R
0
30
`
60
90
Speed, cm per sec
'
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
I
0.8
0.9
I
I
1.0
I
I
I
1.1
Temperature, degrees C.
I
1.2
I
i
1.3
4900m at SAMOA 3. 22 Sep 92 - 25 Feb 94. RCM 7769/24.
,Mean
0.40
0.30
0.25
0.30
0.20
0.20
0.15
0.10
0.10
0.05
F
0.00
0
I
8
F-ii
12
i
20
16
0.00
I
24
30
0
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
1.00 T
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
1.0
1.1
1.2
Temperature, degrees C.
1.3
1.4
5100m at SAMOA 3. 22 Sep 92 - 25 Feb 94. RCM 10645/6
,Mean
0.25 T
0.40 T
0.20 +
0.30
0.15
0.20
0.10
0.10
0.05
0.00
0.00
0
8
12
20
16
24
28
0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
1.00
0.90
>,
0.80
C:
0.70
U
0
LL
0.60
0.50
0.40
75
0.30
0=
0.20
a
0.10
0.00
0.85
0.95
1.05
1.15
Temperature, degrees C.
1.25
1.35
Mooring SAMOA 3. Unfiltered current.
4350m
2980m
102
x
101
x
100
w
Y
10-1
I
10-z
10-2
x
10
3
10-2
10-'
"""'
10°
Hi rrFHIT 1111111
101
Frequency, cycles per day
102
95 pct
95 pct
95 pct
-i-FirimH """'
10-3
10 -2
10 -3
"""'
10-3
10-2
""'H Hii1111 I-FiT11H1
10-'
100
101
Frequency, cycles per day
1
I
I Ills i
102
10-3 f-H riTmHi 111111
10-3
10-2
H-Frim)
10-'
100
11111tH
10'
Frequency, cycles per day
I
I I 111111
102
Mooring SAMOA 3. Unfiltered current.
5100m
4900m
4650m
103
103
103
102
102
10'
10'
1
T
U)
C
a
w
100
T
C
100
Y
10-
a)
'a
10-1
102
2
95 pct
95 pct
103
HTri;;iHri 1111
10
10 -2
10 '
-3
1 111111
10 0
is o to
10 '
Frequency, cycles per day
I
ITrtriri
10-3
103
10 2
10
-3
10
-2
10 '
10 0
10
Frequency, cycles per day
10 2
10
95 pct
-4
10-3
10-2
10-'
100
101
Frequency, cycles per day
102
T N
10.0
7.5
5.0
Velocity
2.5
0.0
qgaqgil
NM
-2.5
-5.0
I qv//,
5.0
U component
2.5
0.0
-2.5
-5.0
5.0
U
a)
V-component
2.5
0.0
-2.5
-5.0
1.72
1.70
Temperature
1.68
1.66
2925
1.64
Pressure
2930
2935
I
2940
S
I
0
I
I
N
1992
D
I
J
F
I
I
I
M
A
M
I
I
I
J
J
A
I
I
I
S
0
199,3
2890m at SAMOA 3. Low-Passed Data.
I
I
N
D
I
J
F
0
TN
7.5
I
5.0
I
Velocity
2.5
0.0
U-component
-2.5
5.0
2.5
aa)
0.0 \
-2.5
-5.0
V-component
5.0
2.5
0.0
-2.5
-5.0
Temperature
1.40
1.38
U
1.36
1.34 -°
Pressure
3995
4000
4005
4010
I
I
S
0
I
I
N
1992
D
I
J
I
F
I
I
M
A
I
M
I
I
J
J
I
A
I
S
0
1993
3940m at SAMOA 3. Low-Passed Data.
I
I
N
D
I
J
F
rn
T N
10.0
7.5
I
I
I
-Velocity
5.0
2.5
0.0
-2.5
12.5
10.0
0
7.5 \
E
5.0 0
7.5
V-co ponent
2.5
U
5.0
E 2.5
U
0.0
1.10
1.08
S
0
I
I
I
1
N
1992
D
J
F
I
I
M
A
I
M
I
I
J
J
I
A
S
I
I
I
0
1993
4350m at SAMOA 3. Low-Passed Data.
N
D
1.06
I
J
F
-rol
T N
10.0
I
7.5
Velocity
5.0
2.5
0.0
-2.5 -
17.5
15.0
12.5
ai
10.0 E
H
0
U
5.0
V-component
5.0
7.5
2.5
0 . 0C
-2.5
1.08
1.07
Temperature
o
1.06 a)a
1.05 -o
C
I
S
I
0
I
I
N
1992
D
I
J
I
F
I
M
I
A
I
M
I
J
I
J
I
I
A
S
0
1993
4650m at SAMOA 3. Low-Passed Data.
I
I
I
N
D
1.04
I
J
F
TN
12.5
10.0
U
a)
7.5
5.0
E
U
2.5
0.0
-2.5
7.5
5.0
2.5
0.0
-2.5
S
0
N
1992
D
J
M
A
M
J
J
A
S
0
1993
4900m at SAMOA 3. Low-Passed Data.
N
D
J
F
TN
10.0
7.5
5.0
2.5
0.0
-2.5
17.5
U-component
15.0
12.5
10.0
0
V-component
7.5
7.5
vi 5.0
2.5
0
0.0
Temperature
ti
F
I
S
0
I
I
1
N
1992
D
1
J
1
1
F
M
1
A
M
I
1
1
J
J
A
S
I
I
I
1
0
1993
5100m at SAMOA 3. Low-Passed Data.
N
D
1
J
F
cn
T N
- 2890m
7.5
5.0
2.5
0.0
-2.5
5.0
0
2.5
-2.5
-5.0
I
I
S
0
I
I
N
1992
D
I
I
J
F
I
M
I
A
I
I
M
J
I
J
I
I
A
S
I
0
Velocity at SAMOA 3. Low 3 Passed Data.
I
I
N
D
I
J
F
7.5
5.0
E
2.5
0.0
-2.5
-5.0
5.0
2.5
U
ccn
0.0 E
-2.5
12.5
10.0
0)
7.5
5.0
15.0 0
2.5
12.5
10.0
15.0
Q0
7.5
ai
EU
12.5
10.0
7.5
5.0
15.0
12.5 0
10.0
7.5
I
I
S
0
N
1992
D
I
J
I
F
I
M
I
A
M
I
J
I
J
I
A
I
S
5.0
0
N
1993
U-Component at SAMOA 3. Low-Passed Data.
D
J
F
7.5
5.0
can
2.5
-I
I
1
I
1
I
1
i
1
1
I
1
I
J
T
I
i
2890m
0.0
-2.5
-5.0
5.0
w
2.5
U)
1-1
0.0
-2.5 E
0
10.0
v
7.5
U)
5.0
2.5
0.0
4650m
7.5
U
5.0
ai
2.5 E
0.0
5.0
0
2.5
0.0
-2.5
-5.0 I- 5100m
7.5
5.0
U
can
2.5 E
I
I
S
0
N
1992
D
J
F
I
I
I
I
M
A
I
I
M
J
1
J
A
S
0
I
I
I
I
1
N
1993
V-Component at SAMOA 3. Low-Passed Data.
D
I
J
0.0
F
U
1.80
1.76
1.72
1.68
1.64
1.60
1.56
1.52
1.48
1.44
1.40
1.36
1.32
1.28
1.24
1.20
1.16
1.12
1.08
1.04
1.00
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
N
1993
Temperature at SAMOA 3. Low-Passed Data.
D
J
F
63
Mooring SAMOA 4
OSU Radio Buoy s/n 24774
Latitude:
2 m 1/2" Chain
Longitude: 169° 29-42W
25 m 3/8" VLS
10 -17" Glass Spheres
1 m 3/8" VLS
3970 m
6732
Installed: 0309 21 Sep. '92
Recovered: 1709 25 Feb. '94
Aanderaa RCM-8
334 m 3/8" VLS
4 -17" Glass Spheres
1 m 3/8" VLS
4330 m
7165
Aanderaa RCM-8
284 m 3/8" VLS
4 -17" Glass Spheres
1 m 3/8" VLS
4650 m
7214
Aanderaa RCM-8
234 m 3/8" VLS
4 -17" Glass Spheres
I m 3/8" VLS
Aanderaa RCM-8
4900 m
184 m 3/8" VLS
4 -17" Glass Spheres
I m 3/8" VLS
5100 m
10643
Aanderaa RCM-8
150 m 3/8" VLS
100 m
50 m
2 -17" Glass Spheres
BACS 8242 Release
15 m 5/8" Nylon
Anchor
FE
100 00.13' S
5285m
64
Mooring SAMOA 4.
Position:
Depth of Water.
Mooring Set:
Mooring Retrieved:
Data Interval:
100 00.13' S
169° 29.42' W
5285m
0309 U.C.T. 21 September 1992
1709 U.C.T. 25 February 1994
0600 U.C.T. 21 September 1992 - 1600 25 February 1994
Instrumentation:
Depth m
3970m
4300m
4650m
4900m
5100m
RCM8 Serial No./Sequence No.
6732/25
7165/30
7214/28
7353/31
10643/5
Instrument 6732 recorded speed, direction, temperature, and pressure every 60 minutes
until recovery. No corrections were made.
Instrument 7165 recorded speed, direction, temperature and pressure every 60 minutes.
No corrections.
Instrument 7214 recorded speed, direction and temperature every 60 minutes. No
corrections.
Instrument 7353 recorded speed, direction, and temperature every 60 minutes. No
corrections.
Instrument 10643 recorded speed, direction, and temperature every 60 minutes. No
corrections.
65
SAMOA 4.
Statistics, Unfiltered Hourly Data
3970 meters at SAMOA 4. 21 Sep 92 - 25 Feb 94. Tape 6732/25.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.93
-11.09
-12.65
1.31
4.68
1.45
-0.58
1.41
14.02
12.23
11.43
2.08
3.43
3.48
12539
12539
12539
1.48
4035.74
4046.69
4048.95
0.02
3.23
12539
12539
4300 meters at SAMOA 4. 21 Sep 92 - 25 Feb 94. Tape 7165/30.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure,db
min
mean
max
sd
num
0.93
-7.93
-9.01
1.08
4.63
2.46
1.69
13.45
12.01
11.66
2.02
2.86
2.90
12539
12539
12539
1.15
1.23
4374.81
4383.03
4386.33
0.02
2.86
12539
12539
4650 meters at SAMOA 4. 21 Sep 92 - 25 Feb 94. Tape 7214/28.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-6.50
-6.10
5.04
3.08
2.63
1.06
15.17
12.39
11.14
2.18
2.66
2.57
0.01
12540
12540
12540
1.04
1.09
12540
4900 meters at SAMOA 4. 21 Sep 92 - 25 Feb 94. Tape 7353/31.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.93
-7.11
-6.10
mean
5.53
3.73
2.53
1.07
1.08
max
sd
18.91
14.49
13.84
2.59
3.08
2.74
num
12540
12540
12540
1.09
0.00
12540
5100 meters at SAMOA 4. 21 Sep 92 - 25 Feb 94. Tape 10643/5.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.93
-6.64
-7.11
1.08
mean
5.17
3.28
2.41
max
17.47
14.56
sd
num
2.43
2.96
13.21
2.71
12541
12541
12541
1.10
1.12
0.00
12541
66
SAMOA 4.
Statistics, Low-Passed Data
3970 meters at SAMOA 4. 28 Sep 92 - 18 Feb 94. Tape 6732/25.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.17
-0.89
-4.39
1.38
2.24
-0.62
1.41
5.82
5.69
2.43
1.02
1.24
1.42
2030
2030
2030
4046.75
1.44
4048.95
0.01
4039.81
2030
2030
1.46
2.57
4300 meters at SAMOA 4. 28 Sep 92 - 18 Feb 94. Tape 7165/30.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.15
-0.77
-1.04
1.11
3.10
2.46
5.84
1.68
3.77
1.15
1.18
4380.57
4383.03
4386.34
4.81
1.35
1.14
1.13
2030
2030
2030
0.02
2.35
2030
2030
4650 meters at SAMOA 4. 28 Sep 92 - 18 Feb 94. Tape 7214/28.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.65
-0.61
0.23
4.13
1.05
1.06
3.11
2.62
7.30
6.04
4.70
1.07
0.98
2030
2030
2030
0.00
2030
1.27
1.12
4900 meters at SAMOA 4. 28 Sep 92 - 18 Feb 94. Tape 7353/3 1.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
1.30
0.43
-0.31
1.08
4.56
3.71
2.52
1.08
8.84
7.03
5.92
1.08
0.98
2030
2030
2030
0.00
2030
1.51
1.42
5100 meters at SAMOA 4. 28 Sep 92 - 18 Feb 94. Tape 10643/5.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.12
4.15
3.24
2.40
7.94
6.35
4.77
1.48
1.42
1.05
2030
2030
2030
1.10
1.10
1.11
0.00
2030
1.15
-0.01
67
N
Mooring SAMOA 4. 21 Sep 92 - 25 Feb 94.
T 200 km
3970 m at SAMOA 4.
400
-200
800 km
600
-200
T 800 km
200
-200
400
600
800
1000
1200 km
1200 km
1000
800
600
400
200
4650 m at SAMOA 4.
-200
1
200
400
600
800
1000
1200
1400 km
68
NT
Mooring SAMOA 4. 21 Sep 92 - 25 Feb 94.
1200 km
800
4900 m at SAMOA 4.
-400
400
800
1200
1600
-400
T 1200 km
-400
400
-400
800
1200
1600 km
2000 km
3970m at SAMOA 4. 21 Sep 92 - 25 Sep 94. RCM 6732/25.
,Mean
0.05 -r
0.04 t
0.03 t
0.02 t
0.01 t
0.00
8
12
16
0
20
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
,Mean
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.20
0.10
0.10
0.00
1.15
1.25
1.35
1.45
Temperature, degrees C.
1.55
1.65
0.00 i
4000
i
i
4016
f
r-i
4032
i
4048
t
I
4064
Pressure, decibars
i
4080
+
4096
4300m at SAMOA 4. 21 Sep 92 - 25 Sep 94. RCM 7165/30.
,Mean
0.10 T
0.40
0.08 +
0.30
0.06 +
0.20 +
0.04 +
0.10 +
i - F-i
0.00
0
4
8
12
16
0.02 +
i
i
I
20
24
0.00
i
Ii
0
'
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
,Mean
0.50
0.40
0.30
0.20
0.10
0.00
0.9
1.0
1.1
1.2
Temperature, degrees C.
1.3
1.4
0.00
4350
4362
4374
4386
4398
Pressure, decibars
4410
4422
4650m at SAMOA 4. 21 Sep 92 - 25 Sep 94. RCM 7214/28.
I Mean
0.40 T
0.14
0.12
0.30 t
0.10
0.08
0.20 t
0.06
n n4
u.1 u t
0.02
i
0.00
1
0
I
4
F
I
+
8
0.00
I
12
20
16
0
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
1.00 T
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
1.0
1.1
Temperature, degrees C.
1.2
1.3
4900m at SAMOA 4. 21 Sep 92 - 25 Sep 94. RCM 7353/31.
Mean
0.14
0.40 -r
1
0.12 i-
1
0.30
0.10
0.08
0.20 t
0.06
0.10+
0.00
I
I
0
i
4
I
II
8
0.04
75
0.02 +
0.00
I
20
16
12
30
0
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,,Mean
1.10
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
1.0
1.1
1.2
Temperature, degrees C.
1.3
1.4
5100m at SAMOA 4. 21 Sep 92 - 25 Sep 94. RCM 10643/5.
Mean
0.14
0.40 -r
1
0. 30
,
0.20 t
r--1
0.12
I
010
I
I
C-
I
0.08
0.06
0.04
0.10t
0.02
0.00
0.00
0
4
8
12
16
24
20
0
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.85
0.95
1.05
1.15
Temperature, degrees C.
1.25
1.35
Mooring SAMOA 4. Unfiltered current.
3970m
103
4300m
1
10-21
10-21
95 pct
N,, ,,,,,
10-3
10-3
10-2
10-1
100
10 3
101
Frequency, cycles per day
102
95 pct
$
N+HIH H
10-3
10-2
IH
HiiifH HRH;;
10-'
10°
101
Frequency, cycles per day
102
Mooring SAMOA 4. Unfiltered current.
4650m
5100m
4900m
102
102
a
Cl)
C
c
c
a)
10
10
a
w
Y
I
I
1031
10-3
2
95 pct
H-Hii111
10-4
10-3
10-2
10-1
10°
101
Frequency, cycles per day
102
10
95 pct
95 pct
I
-4
10 4
102
10-3
11 FFHIH
10-3
10-2
10-'
10°
101
Frequency, cycles per day
10-2
10-'
10°
101
Frequency, cycles per day
102
TN
7.5
I
5.0
can
E
2.5
0.0
-2.5
-5.0
5.0
2.5
can
0.0 E
0
can
E
U
5.0
1-2.5
V-component
2.5
0.0
-2.5
1.46
1.44
1.42
1.40
4035
1.38
4040
g 4045
4050
I
4055
S
I
0
I
I
N
1992
D
I
J
I
F
I
M
I
A
I
M
I
J
I
J
I
A
I
S
0
1993
3970m at SAMOA 4. Low-Passed Data.
I
I
I
N
D
I
J
F
TN
7.5
5.0
U)
2.5
E 0.0
-2.5
-5.0 -U-component
5.0
2.5
0.0
5.0
can
E
-2.5
V-component
2.5
0.0
-2.5
4390
L Pressure
4385
4380
4375
I
I
4370
S
0
I
I
N
1992
D
I
I
J
F
I
M
I
A
I
I
M
J
I
I
J
A
I
S
I
I
O
1993
4300m at SAMOA 4. Low-Passed Data.
N
D
J
F
w
ccn
I=
Velocity
-
P
r
V-component
I
I
I
i
I
I
T N
10.0
7.5
0
a)
Velocity
5.0
!ii
2.5
0.0
-2.5
-5.0
7.5
U-component
5.0 oa)
2.5
E
0.0 U
-2.5
5.0
1.10
Temperature
1.09
1.08
1.07
LS
I
0
I
I
N
1992
D
I
J
I
F
I
M
I
A
I
I
M
J
I
I
J
A
I
I
S
0
1993
4900m at SAMOA 4. Low-Passed Data.
I
I
N
D
1.06
I
J
F
[- Velocity
- V-component
Temperature
I
S
0
I
I
I
N
1992
D
I
I
J
F
I
M
I
A
I
M
I
J
I
I
J
A
I
S
0
1993
5100m at SAMOA 4. Low-Passed Data.
I
I
I
N
D
I
J
F
a
N
'DID(] P@SSDd-MO7 H7 VOWVS 4D / iOOIGA
£66L
0
s
v
r
Ill
r
W
V
W
A
r
a
Z66L
N
0
s
LI
rg%
POOLS
,
W006b
L
0591
W OOLj
unnuain
W0L6£
NJ
7.5
I
I
I
I
I
1
I
1
1
I
1
I
5.0
U)
C)
U
2.5
0.0
-2.5
5.0
0
2.5
ai
0.0 E
5.0
-2.5
U
5.0
U
2.5
0.0
-2.5
2.5
0.0
-2.5
5.0
ai
2.5
0.0
-2.5
I
S
0
I
I
I
N
1992
D
I
I
J
F
I
M
I
I
A
M
I
J
I
I
J
1993
A
I
I
S
0
U-component at SAMOA 4. Low-Passed Data.
I
N
I
D
I
F
cc,
E
U
5.0
2.5
\ 0.0
I- 3970m
-2.5
-5.0
5.0
U
2.5
ai
0.0 E
5.0
ai
-2.5
U
5.0
0
2.5
0.0
-2.5
2.5
U)
0.0 E
0
can
-2.5
5.0
2.5
0.0
-2.5
I
1
S
0
I
I
N
1992
D
I
J
I
F
I
I
M
A
I
M
II
I
J
J
A
S
0
I
1
I
N
1993
V-component at SAMOA 4. Low-Passed Data.
D
I
J
F
U
1.20 1.16 1.12
1.08 1.04
-
1.00
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
N
1993
Temperature at SAMOA 4. Low-Passed Data.
D
J
F
85
I
Mooring SAMOA 5
OSU Radio Buoy s/n 20782
2 m 1/2" Chain
Latitude:
10° 05.13' S
Longitude: 169° 14.72' W
25m3/8"VLS
Glass Spheres
6 10 -17"
1 m 3/8" VLS
3980 m
0 6731
Installed: 1952 20 Sep. '92
Recovered: 2056 25 Feb. '94
Aanderaa RCM-8
335 m 3/8" VLS
Q 4 -17" Glass Spheres
1 m 3/8" VLS
4330 m 0
7163
Aanderaa RCM-8
283 m 3/8" VLS
Q 4 -17" Glass Spheres
I m 3/8" VLS
4630 m
0
7213
Aanderaa RCM-8
234 m 3/8" VLS
Q 4 -17" Glass Spheres
I m 3/8" VLS
4880 m 0
7351
Aanderaa RCM-8
183 m 3/8" VLS
4 -17" Glass Spheres
I m 3/8" VLS
5080 m - 01 10644
Aanderaa RCM-8
100 m 3/8" VLS
2 -17" Glass Spheres
BACS 8242 Release
15 m 5/8" Nylon
Anchor
5245m
86
Mooring SAMOA 5.
Position:
Depth of Water:
Mooring Set:
Mooring Retrieved:
Data Interval:
10° 05.13' S
169° 14.72' W
5245m
1952 U.C.T. 20 September 1992
2056 U.C.T. 25 February 1994
2200 U.C.T. 20 September 1992 - 2000 25 February 1994
Instrumentation:
Depth m
3980m
4330m
4630m
4880m
5080m
RCM8 Serial No./Sequence No.
6731/24
7163/27
7213/27
7351/32
10644/5
Instrument 6731 recorded speed, direction, temperature, and pressure every 60 minutes
until recovery. No corrections were made.
Instrument 7163 recorded speed, direction, temperature and pressure every 60 minutes.
No corrections.
Instrument 7213recorded speed, direction and temperature every 60 minutes. No
corrections.
Instrument 7351 recorded speed, direction, and temperature every 60 minutes. No
corrections.
Instrument 10644 recorded speed, direction, and temperature every 60 minutes. No
corrections.
87
SAMOA 5.
Statistics, Unfiltered Hourly Data
3980 meters at SAMOA 5. 20 Sep 92 - 25 Feb 94. Tape 6731/24.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.93
-9.63
-13.14
1.31
4043.51
mean
4.68
0.62
-1.74
1.40
4050.57
max
sd
num
14.89
12.59
9.95
2.07
3.14
3.59
12551
12551
12551
1.47
0.02
2.20
12551
12551
4055.79
4330 meters at SAMOA 5. 20 Sep 92 - 25 Feb 94. Tape 7163/27.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.93
-8.58
-9.44
1.07
4401.10
mean
4.67
1.77
1.83
1.16
4406.95
max
num
14.31
sd
1.96
11.94
12.72
3.04
3.16
12551
12551
12551
1.26
0.03
0.17
12551
12551
4412.79
4630 meters at SAMOA 5. 20 Sep 92 - 25 Feb 94. Tape 7213/27.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-7.35
-8.15
3.70
1.80
1.72
1.19
10.30
8.98
8.58
12551
12551
12551
1.03
1.05
1.07
2.40
2.50
0.01
12551
4880 meters at SAMOA 5. 20 Sep 92 - 25 Feb 94. Tape 7351/32.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-6.79
-8.64
3.95
1.95
1.19
12.30
9.73
11.15
1.80
2.44
2.77
12551
12551
12551
1.06
1.07
1.09
0.00
12551
5080 meters at SAMOA 5. 20 Sep 92 - 25 Feb 94. Tape 10644/5.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-6.85
-8.15
4.49
2.05
15.75
11.02
14.86
2.02
2.50
3.26
12551
12551
12551
1.09
1.10
1.10
0.00
12551
1.78
88
SAMOA 5.
Statistics, Low-Passed Data
3980 meters at SAMOA 5. 28 Sep 92 - 18 Feb 94. Tape 6731/24.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.07
-2.21
-7.33
1.36
4049.65
mean
2.82
0.60
-1.81
1.40
4050.60
max
7.37
4.32
2.86
1.43
4053.11
sd
1.81
1.25
2.46
0.02
0.82
num
2032
2032
2032
2032
2032
4330 meters at SAMOA 5. 28 Sep 92 - 18 Feb 94. Tape 7163/27.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.08
-0.15
-1.18
1.12
4406.95
2.77
6.01
1.78
1.78
1.16
3.69
5.75
4406.95
4407.20
1.21
1.18
0.71
1.48
0.02
0.02
2032
2032
2032
2032
2032
4630 meters at SAMOA 5. 28 Sep 92 - 18 Feb 94. Tape 7213/27.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.38
2.54
4.41
0.94
-2.44
-3.03
1.80
1.16
1.05
3.46
3.59
1.00
1.33
2032
2032
2032
1.06
0.00
2032
1.04
4880 meters at SAMOA 5. 28 Sep 92 - 18 Feb 94. Tape 7351/32.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.54
-3.59
-3.39
1.07
2.70
1.94
1.13
1.07
5.79
3.39
5.04
1.12
1.06
1.54
1.08
0.00
2032
2032
2032
2032
5080 meters at SAMOA 5. 28 Sep 92 - 18 Feb 94. Tape 10644/5.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.54
-2.95
-3.54
1.10
3.22
1.74
2.01
1.10
7.30
4.57
6.53
1.10
1.63
1.04
2.21
0.00
2032
2032
2032
2032
89
NT
Mooring SAMOA 5. 20 Sep 92 - 25 Feb 94.
T 200 km
1-1000
T 1000 km
t
200
-200
1 -200
400
600
800 km
90
T 600 km
Mooring SAMOA 5. 20 Sep 92 - 25 Feb 94.
NT
200
-200
400
600
800
1000 km
200
400
600
600 km
-200
-200
800
T 1000 km
1-200
-200
200
1 -200
400
600
800
1000 km
1000 km
3980m at Samoa 5. 20 Sep 92 - 25 Feb 94. RCM 6731/24.
,Mean
0.40 T
0.08
0.30 i-
0.06
0.20
0.10 t
0.00
0.00
0
4
8
12
16
20
0
30
60
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
L-
,Mean
0.50 T
90
0.90
0.80
0.40 t
0.70
0.60
0.30+
0.50
0.40
0.20 t
0.30
0.10 t
0.20
0.00 ;
0.10
1.15
1.25
1.35
1.45
Temperature, degrees C.
1.55
1.65
0.00
4014
4026
4038
4050
4062
Pressure, decibars
4074
4086
4330m at Samoa 5. 20 Sep 92 - 25 Feb 94. RCM 7163/27.
,Mean
0.40T
0.08T
0.30 i-
0.06
0.20 t
0.04
0.10 +
0.02
I
0.00 ;
0
i
F
I
4
8
I
i
12
0.00 '
i
16
20
0
'
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
,Mean
0.50 T
1.00
0.90
1
0.40 +
U
0.30 +
0.80
C:
0.70
0
0.60
IL
0.50
0.20 t
0.40
lEi
a)
Cr
0.10 t
0.30
0.20
0.10
0.00
o
0.9
1.0
i
1.1
1.2
1.3
Temperature, degrees C.
1.4
1.5
0.00
4374
4386
4398
4410
4422
Pressure, decibars
4434
4446
4630m at Samoa 5. 20 Sep 92 - 25 Feb 94. Tape 7213/27.
,Mean
0.08 T
0.25 r
0.20 t
0.06
0.15 i0.04
0.10 t
0.05 t
0.00 ;
0.0
I
i
1.5
i
i
3.0
i
i
4.5
i
i-;-I7.5
6.0
9.0
0.02
0.00
I
10.5
0
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
1.0
1.1
Temperature, degrees C.
1.2
1.3
4880m at Samoa 5. 20 Sep 92 - 25 Feb 94. RCM 7351/32.
,Mean
0.40 T
0.08 T
0.30
0.06 +
0.20
0.04
0.10 +
0.02
0.00
0.00
0
3
6
9
12
18
15
'
0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.8
0.9
1.0
1.1
1.2
Temperature, degrees C.
1.3
1.4
5080m at Samoa 5. 20 Sep 92 - 25 Feb 94. RCM 10644/5.
,Mean
0.40
0.10
I
0.08
0.30 +
0.06
0.20 +
0.04
0.10 +
0.00 a
0
i
i
4
i
iI1
8
16
12
0.02
-i
0.00
20
0
30
60
Speed, cm per sec
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.85
0.95
1.05
1.15
Temperature, degrees C.
1.25
1.35
Mooring SAMOA 5. Unfiltered current.
3980m
4330m
102
I
101
z
I
10 -2
95 pct
103
95 pct
103
10-3
10-2
10-'
100
101
Frequency, cycles per day
102
10-3
10"2
10-'
100
101
Frequency, cycles per day
102
Mooring SAMOA 5. Unfiltered current.
4880m
4630m
102
5080m
103
102
T
i
101
a
(D
100
w
10 -1
10
x
10 310
1 1 1 111111
3
10
Hi miHi+rFIH
-2
10
-1
10
I I
0
I 111111
10
Frequency, cycles per day
I
1
10
10 3,
10-3
I I I 11111
2
95 pct
10-4
t
x
i
I
10-3
11/1+/11
I0 1111111
10-2
+ 11/11/11
10-1
100
11/11/1111 11/01/11
101
Frequency, cycles per day
102
10-3
95 pct
1
1
10-2
11/1;/11
I
10-1
1111++H
100
I
I 1111111
101
Frequency, cycles per day
I
I
iliIlli
102
T N
5.0
2.5
Velocity
0.0
N,
N\11
E -2.5
-5.0
-7.5
5.0
a
-component
2.5
0.0
E -2.5
-5.0
-1 1.46
[- Temperature
1.44
1.42
1.40
1.38
4045.0
4047.5
4050.0
4052.5
Hi 1.36
Pressure
4055.0
I
I
S
0
I
I
N
1992
D
i
I
J
F
M
I
I
I
A
M
I
J
I
J
I
A
I
S
0
1993
3980m at SAMOA 5. Low-Passed Data.
I
I
I
N
D
I
J
F
TN
7.5
I
I
I
I
I
1
I
I
I
I
I
I
I
I
I
5.0
can
E
2.5
0.0
-2.5
-5.0
5.0
U-component
2.5 0
0.0 \
-2.5
-5.0
5.0
2.5
\ 0.0
E
U
-2.5
-5.0
1.22
Temperature
1.20
1.18
1.16
1.14
1.12
1.10
Pressure
4400
4405
g 4410
4415
I
4420
S
I
0
I
I
N
1992
D
I
J
I
F
I
M
I
A
I
M
I
I
J
J
I
I
A
S
I
0
1993
4330m at SAMOA 5. Low-Passed Data.
I
I
N
D
I
J
F
TN
7.5
Velocity
5.0
ccn
E
2.5
0.0
V 0,901,
-2.5
-5.0
U-component
V-component
5.0
2.5
\ 0.0
C)
U -2.5
-5.0
Temperature
S
I
I
I
0
N
1992
D
I
J
I
F
I
M
I
A
I
M
I
J
I
J
I
A
I
S
1993
4630m at SAMOA 5. Low-Passed Data.
I
0
I
I
N
D
I
J
F
TN
7.5
Velocity
5.0
can
2.5
0.0
-2.5
-5.0
5.0
2.5
0.0
-2.5
-5.0
1.080
1.075
1.070
1.065
I
S
0
1.060
I
I
N
1992
D
J
F
M
A
M
J
J
A
S
0
1993
4880m at SAMOA 5. Low-Passed Data.
N
D
J
F
Q)
TN
7.5
can
I
Velocity ,
5.0
2.5
/`,
&.J&,06
0.0
- /11111111111411111111110
_dt
-2.5
-5.0
5.0
Temperature
1.105
1.100
1.095
I
I
S
0
I
I
N
1992
D
I
J
I
I
F
M
I
A
I
M
I
J
I
J
I
A
I
I
S
0
1993
5080m at SAMOA 5. Low-Passed Data.
I
I
N
D
1.090
I
J
F
U
TN
5.0
7
2.5
0.0
E -2.5
0
-5.0
-7.5
4330m
Iii
5.0
2.5
0.0
5.0
ai
2.5
E
0.0
0
-2.5
-2.5
4630m
4880m
,./,A
v
C)
5.0
ai
2.5
E
0.0
-- 5080m
AV
-2.5
-5.0
I
I
S
0
I
I
N
1992
D
I
J
I
I
F
M
i
I
A
M
I
J
I
J
I
I
A
S
I
0
1993
Velocity at SAMOA 5. Low-Passed Data.
I
N
I
1
D
J
F
can
EU
5.0
0
2.5
ai
0.0
E
-2.5
7.5
0
U
7.5
I
I
5.0
ui
E
I
I
I
1
3QR0m
2.5
0.0
-2.5
-5.0 I- 4330m
5.0
2.5
w
U)
0.0 E
u
(1)
E
U
4630m
-2.5
U
-2.5 E 4880m
5.0
w
2.5
ai
5.0
C-
2.5
0.0
0.0 E
-2.5 0
5.0
2.5
\ 0.0
-2.5
-5.0
I
S
0
I
I
I
N
1992
D
I
J
I
I
F
M
I
1
A
M
1
1
J
J
A
S
I
I
1
0
1993
U-Component at SAMOA 5. Low-Passed Data
N
I
D
I
J
F
5.0
I
Q
1
1
I
I
I
I
I
1
I
I
I
2.5
\ 0.0
-2.5
-5.0
v
ci
5.0
co
0.0
EU
-2.5
5.0
U
2.5
2.5
0.0
-2.5
5.0
2.5
can
0.0 E
-2.5 0
5.0
U
a)
2.5
\ 0.0
-2.5
-5.0
I
1
S
0
N
1992
I
1
1
D
J
F
I
M
I
A
I
M
I
J
J
I
I
A
S
I
0
1993
V-component at SAMOA 5. Low-Passed Data.
I
I
N
D
I
J
F
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
N
1993
Temperature at SAMOA 5. Low-Passed Data.
D
J
F
107
Mooring SAMOA 6
OSU Radio Buoy s/n 12024
2 m 1/2" Chain
25 m 3/8" VLS
10 -17" Glass Spheres
1 m 3/8" VLS
2970 m 0
5856
Aanderaa RCM-8
Latitude:
10° 13.21' S
Longitude: 168° 50.00' W
Installed: 0325 20 Sep. '92
Recovered: 0 100 26 Feb. '94
968 m 3/8" VLS
Q 4 -17" Glass Spheres
T
3940 m 0
1 m 3/8" VLS
6737
Aanderaa RCM-8
188 m 3/8" VLS
Q 4 -17" Glass Spheres
T
4160 m
0
1 m3/8"VLS
7210
Aanderaa RCM-8
186 m 3/8" VLS
Q 4 -17" Glass Spheres
T
4360 m
LI
I m 3/8" VLS
7216
Aanderaa RCM-8
39 m 3/8" VLS
2 -17" Glass Spheres
BACS 8242 Release
15 m 5/8" Nylon
Anchor
4455m
108
Mooring SAMOA 6.
Position:
10° 13.21' S
168° 50.00' W
Depth of Water:
Mooring Set:
Mooring Retrieved:
Data Interval:
4455m
0325 U.C.T. 20 September 1992
0100 U.C.T. 26 February 1994
0600 U.C.T. 20 September 1992 - 0000 26 February 1994
Instrumentation:
Depth in
2970m
3940m
4160m
4360m
RCM8 Serial No./Sequence No.
5856/17
6737/38
7210/29
7216/26
Instrument 5856 recorded speed, direction, temperature, and pressure every 60 minutes
until recovery. Temperature was set to null, lines 7246 (0300 19 Jul 93) to line 12571
(0000 26 Feb 94) end of the record. On Jul 19th the temperature sensor malfunctioned.
The preceding temperature record looks good, but should be viewed with the
malfunction in mind. The pressure record becomes shallower by 4 bits during the first
two days of the installation. There were no corrections in the other parameters.
Instrument 6737 recorded speed, direction, temperature and pressure every 60 minutes.
No corrections.
Instrument 7210 recorded speed, direction and temperature every 60 minutes. No
corrections.
Instrument 7216 recorded speed, direction, and temperature every 60 minutes. No
corrections.
109
SAMOA 6
Statistics, Unfiltered Hourly Data
2970 meters at SAMOA 6. 20 Sep 92 - 26 Feb 94. Tape 5856/17.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure,db
min
mean
max
0.93
-9.75
-11.10
12.59
10.19
11.71
1.62
4.14
0.59
0.86
1.65
3002.73
3003.07
3034.19
1.70
sd
1.83
3.02
3.22
0.01
1.78
num
12571
12571
12571
7245
12571
3940 meters at SAMOA 6. 20 Sep 92 - 26 Feb 94. Tape 6737/38.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
min
mean
max
sd
num
0.93
-9.67
-10.84
12.59
11.41
12.01
1.98
3.36
3.46
12571
12571
12571
1.37
4.57
1.22
0.35
1.42
1.46
0.01
4002.80
4012.30
4014.15
2.66
12571
12571
4160 meters at SAMOA 6. 20 Sep 92 - 26 Feb 94. Tape 7210/29.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
min
mean
max
sd
num
0.93
-11.27
4.23
0.42
1.85
3.23
-9.04
0.51
12.88
12.68
12.83
3.23
12571
12571
12571
1.21
1.30
1.38
0.03
12571
4360 meters at SAMOA 6. 20 Sep 92 - 26 Feb 94. Tape 7216/26.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.93
-8.49
-12.03
1.05
max
sd
num
-0.14
-0.84
13.45
8.06
9.40
1.68
2.83
3.14
12571
12571
12571
1.11
1.29
0.03
12571
mean
3.97
110
SAMOA 6
Statistics, Low-Passed Data
2970 meters at SAMOA 6. 27 Sep 92 - 18 Feb 94. Tape 5856/17.
min
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.04
-2.17
-3.44
1.64
mean
2.04
0.56
0.90
1.65
max
4.04
3.37
3.52
1.66
0.85
1.24
1.49
0.01
3002.73
3002.93
3009.34
0.98
sd
num
2036
2036
2036
1148
2036
3940 meters at SAMOA 6. 27 Sep 92 - 18 Feb 94. Tape 6737/38.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
Pressure, db
0.21
2.58
-2.36
-3.52
1.39
1.23
0.31
4008.47
4012.37
1.42
5.85
4.70
3.99
1.15
1.76
1.80
2036
2036
2036
1.44
4014.15
0.01
2036
2036
2.40
4160 meters at SAMOA 6. 27 Sep 92 - 18 Feb 94. Tape 7210/29.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.02
-2.66
-2.40
1.27
4.76
3.56
3.37
0.84
0.44
0.46
1.35
1.40
2036
2036
2036
1.31
1.36
0.02
2036
1.87
4360 meters at SAMOA 6. 27 Sep 92 - 18 Feb 94. Tape 7216/26.
Speed, cm/sec
U, cm/sec
V, cm/sec
Temp, deg c
0.14
-1.78
-2.95
1.07
1.07
-0.16
-0.83
1.11
3.38
1.66
1.08
0.52
0.53
0.64
2036
2036
2036
1.23
0.03
2036
111
Mooring SAMOA 6. 20 Sep 92 - 26 Feb 94.
T 500 km
NT
300 km
+400
+300
+200
,100
1
100
200
300
400
3940 m at SAMOA 6.
-100
1-100
T 100 km
300 km
-100
100
200
300 km
-100
4160 mat SAMOA 6.
4360 m at SAMOA 6.
500
600 km
2970m at Samoa 6. 20 Feb 92 - 26 Feb 94. RCM 5856/17.
,Mean
0.05 T
0.20 T
0.15 t
0.10 t
0.05 +
0.01 t
0.00
0.00
3.0
1.5
0.0
4.5
7.5
6.0
9.0
10.5
12.0
13.5
'
0
30
60
90
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
,Mean
1.00
0.60
0.90
0.50
0.80
0.70
0.40
0.60
0.50
0.30
0.40
0.20
0.30
0.10
0.00
--4
i
1.4
1.5
i
4
1.6
1.7
i
1.8
Temperature, degrees C.
0.20
0.10
i
i
1.9
H
2.0
0.00
2976
2992
3008
3024
3040
Pressure, decibars
3056
3072
3940m at Samoa 6. 20 Feb 92 - 26 Feb 94. RCM 6738/38.
,Mean
0.05 T
0.20 T
0.04 t
0.15 t
0.03 +
0.10 t
0.02 t
0.05 t
0.00
0.01 t
I
I
0.0
I
I
3.0
1.5
I
I
I
I
4.5
I
6.0
I
I+
1
7.5
9.0
I
I
12.0
10.5
I
0.00'
13.5
0
30
60
90
I'
120 150 180 210 240 270 300 330 360
Direction, degrees true
Speed, cm per sec
,Mean
,Mean
0.90 T
0.70
0.80
0.60
0.70
0.50
0.60
0.50
0.40
0.40
0.30
0.30
0.20
0.20
0.10
0.10 t
0.00
1.15
I
I
1.25
F-
1.35
I
I
1.45
I
I
1.55
1.65
Temperature, degrees C.
I
I
1.75
0.00
3978
I
3990
4002
4014
4026
Pressure, decibars
I
I
4038
I
I
4050
4160m at Samoa 6. 20 Feb 92 - 26 Feb 94. RCM 7210.29.
,Mean
0.20 T
0.04
0.15 i-
0.03
0.10 t
0.02
0.05 t
0.01
0.00
.
I
0.0
I
1.5
i
3.0
i
I
I
4.5
I
6.0
I
i
7.5
I
I
9.0
10.5
I
12.0
0.00.
1
13.5
I
30
0
60
90
Speed, cm per sec
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
0.50 T
0.40 +
0.30 t
0.20 t
0.10 t
0.00 i
1.05
i
I
1.15
I
I
1.25
i
i
I
1.35
Temperature, degrees C.
i
1.45
i
1.55
4360m at Samoa 6. 20 Feb 92 - 26 Feb 94. RCM 7216/26.
,Mean
0.06
0.50
0.05
0.40
I
I
0.04
0.30
0.03 +
0.20 t
010 L-
0.02 t
-j
0.01 +
0.00 ii
0
i
4
8
I
f
12
i
I
I
0.00
i
20
16
24
'
0
30
60
90
Speed, cm per sec
120 150 180 210 240 270 300 330 360
Direction, degrees true
,Mean
0.50 T
I
0.40 +
0.30 +
0.20 +
0.10 +
0.00
i
0.9
I
I
1.0
I
I
1.1
ITS
1.2
Temperature, degrees C.
1.3
I
I
1.4
Mooring SAMOA 6. Unfiltered current.
2970m
102
102
10'
I
U)
ca)
10°
w
Y
10-1
10-1
10-2
10 -2
95 pct
10 3 1
1
10-3
-
-
10-2
-.2immm 1
10''
II 11iiri1H
10°
iiin
101
Frequency, cycles per day
102
95 pct
103
10-3
10-2
10-'
100
10'
Frequency, cycles per day
102
Mooring SAMOA 6. Unfiltered current.
4360m
4160m
102
102
T
101
z
100
I
10-1
3
10-
2
1-
t
11
-----10-3
i II
10-3
II
I I i II H"""'
10-2
10-1
100
10
Frequency, cycles per day
95 pct
95 pct
"""' H 1 Fmri
101
2
102
10-3
10-3
10-2
10-1
100
101
Frequency, cycles per day
102
00
TN
5.0
2.5
0.0
16
VRW
-2.5
-5.0
U-component
2.5 0
0.0
- 2.5 0E
-1 -5.0
V-component
Temperature
1.67
1.66
1.65
1.64
Pressure
3020
1.63
3010
3000
I
I
2990
S
0
I
I
N
1992
D
I
I
J
F
I
M
I
I
A
M
I
J
I
J
I
I
A
S
1993
2970m at SAMOA 6. Low-Passed Data.
0
I
I
I
N
D
I
J
F
T N
7.5
5.0
vi
2.5
E
0.0
Velocity
-2.5
-5.0 F- U-component
5.0
2.5
U)
0.0
5.0
-2.5
-5.0
!- V-component
2.5
U)
0.0
-2.5
-5.0
1.44
-
Temperature
1.43
1.42
1.41
1.40
4000
4005
1.39
C Pressure
F
4010
4015
I
4020
S
I
0
I
I
N
1992
D
I
J
I
F
I
I
M
A
I
I
M
J
I
J
I
A
I
I
S
0
1993
3940m at SAMOA 6. Low-Passed Data.
I
I
N
D
I
J
F
TN
7.5
Velocity
5.0
can
2.5
0.0
-Ilr
-2.5
-5.0
5.0
2.5
a)
0.0 \
5.0
-2.5
-5.0
r V-component
2.5
0.0
-2.5
-5.0
1.36
1.34
1.32
1.30
I
S
0
N
1992
II
I
I
I
D
1.28
J
F
M
A
1.26
I
M
J
J
1.24
I
A
S
0
1993
4160m at SAMOA 6. Low-Passed Data.
N
D
J
F
T N
5.0
2.5
0.0
-2.5
-5.0
2.5
0.0
w
cci
-2.5 E
U
can
E
0
-5.0 0
2.5
0.0
-2.5
-5.0
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
1.08
1.06
1.04
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
1993
4360m at SAMOA 6. Low-Passed Data.
N
D
J
F
TN
7.5
5.0
can
2.5
2970m
m...,aoiP1111I& Vtee
E
TV
0.0
-2.5
-5.0
5.0
3940m
5.0
2.5
A
Q
u` It
0.0
-2.5
-5.0
4160m
2.5
0.0
-2.5
-5.0
5.0
C 4360m
2.5
T - I\\
i
S
I
0
I
I
N
1992
D
I
J
I
F
I
M
A
U)
I
I
M
0.0 \
fw- 11
I
J
I
J
A
I
I
I
S
0
1993
Velocity at SAMOA 6. Low-Passed Data.
I
I
N
D
-2.5
-5.0
I
J
F
5.0
2.5
\ 0.0
E -2.5
-5.0
5.0
2.5
w
cc,
0.0 E
-2.5
5.0
ai
2.5
E
0.0
0
-2.5
S
0
N
1992
D
J
F
M
A
M
J
J
A
S
0
1993
U-Component at SAMOA 6. Low-Passed Data.
N
D
J
F
U
5.0
q
2.5
- 2970m
\ 0.0
-2.5
-5.0
5.0
2.5
0.0
5.0
cci
E
-2.5
C 4160m
2.5
0.0
-2.5
4360m
CI
S
I
I
0
N
1992
I
I
D
J
F
I
I
M
A
I
M
I
I
J
J
I
A
I
S
0
N
1993
V-Component at SAMOA 6. Low-Passed Data.
D
J
F
U
cci
EU
1.68
1.64
1.60
1.56
1.52
1.48
1.44
1 .40
1.36
1.28 1
1.24
1.20
-I
1.16
1.12
1.08
-
1.04 1.00
S
D
J
F
M
A
A
M
S
0
N
1993
Temperature at SAMOA 6. Low-Passed Data.
D