-
WOCE_Version:
3.0
-
CONVENTIONS:
COARDS/WOCE
-
DATA_TYPE:
TRACK
-
DATA_SUB_TYPE:
SADCP
-
INST_TYPE:
SADCP
-
DATA_ORIGIN:
UNIVERSITY OF RHODE ISLAND
-
EXPOCODE:
none
-
WOCE_ID:
none
-
CRUISE_NAME:
OLE93.SUMR
-
DAC_ID:
00093
-
FILE_SOURCE:
00093.sub
-
file_date:
12 Apr 2002
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TIME_INTERVAL_BETWEEN_DATA:
hour
-
TIME_AVERAGING_SCHEME:
mean centered on hour
-
DEPTH_INTERVAL_BETWEEN_DATA:
10 meters
-
DEPTH_AVERAGING_SCHEME:
mean centered on given depth
-
SHIP_POSITION:
average over hour
-
doc_000:
The following time, space, and depth ranges for this cruise
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doc_001:
are based on the complete high-resolution data set and does
-
doc_002:
not agree exactly with the ranges of this averaged subset.
-
doc_003:
#DATA_DATES: 1993/06/18 21:08:00 --- to --- 1993/08/05 13:24:00
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doc_004:
#LON_RANGE: 73.92 W --- to --- 64.60 W
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doc_005:
#LAT_RANGE: 32.38 N --- to --- 40.49 N
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doc_006:
#DEPTH_RANGE: 9 --- to --- 416 m
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doc_007:
#SAC_CRUISE_ID: 00093
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doc_008:
#PLATFORM_NAME: M.V. Oleander (commercial container vessel)
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doc_009:
#PRINCIPAL_INVESTIGATOR_NAME: T.Rossby, E.Gottlieb, G.Schwartze
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doc_010:
#PI_INSTITUTION: University of Rhode Island
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doc_011:
#PI_COUNTRY: USA
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doc_012:
#PROJECT: The Oleander Project
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doc_013:
#CRUISE_NAME: ole93.sumr
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doc_014:
#PORTS: Port Elizabeth, New Jersey --- to --- Hamilton, Bermuda
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doc_015:
#GEOGRAPHIC_REGION: Northwest Atlantic Ocean
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doc_016:
#PROCESSED_BY: Erik Gottlieb
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doc_017:
#NAVIGATION: gps
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doc_018:
#QUALITY_NAV: good
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doc_019:
#GENERAL_INFORMATION:
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doc_020:
CRUISE NOTES
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doc_021:
CHIEF SCIENTIST ON SHIP : none
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doc_022:
SIGNIFICANT DATA GAPS : 93/ 6/25-93/ 7/ 1 lost gyrocompass
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doc_023:
* indicates total data loss
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doc_024:
SPECIAL SHIP TRACK PATTERNS : weekly ship schedule is as follows:
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doc_025:
Friday - leave Elizabeth (outbound)
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doc_026:
Sunday - arrive Hamilton
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doc_027:
Tuesday - leave Hamilton (inbound)
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doc_028:
Thursday - arrive Elizabeth
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doc_029:
COMMENTS : The only significant deviations from
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doc_030:
the weekly schedule are due to bad
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doc_031:
weather and port conflicts, and typically
-
doc_032:
are no more than 24 hours.
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doc_033:
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doc_034:
ADCP INSTRUMENTATION
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doc_035:
MANUFACTURER : RD Instruments (RDI)
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doc_036:
HARDWARE MODEL : RD-VM150
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doc_037:
SERIAL NUMBERS : ADCP = 536 / XDUC = 449
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doc_038:
FIRMWARE VERSION : 17.10
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doc_039:
<the following 5 fields are specific to a given hardware model>
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doc_040:
TRANSMIT FREQUENCY : 153 kHz
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doc_041:
TRANSDUCER CONFIGURATION : JANUS CONCAVE
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doc_042:
ACOUSTIC BEAM WIDTH :
-
doc_043:
TRANSDUCER BEAM ANGLE : 30 deg.
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doc_044:
COMMENTS :
-
doc_045:
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doc_046:
ADCP INSTALLATION
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doc_047:
METHOD/DESCRIPTION OF THE
-
doc_048:
ATTACHMENT TO THE HULL : A seachest (well) is flush-welded
-
doc_049:
to the vessel's hull, so that the
-
doc_050:
seachest bottom is flush with the
-
doc_051:
hull's outer surface (the vessel bottom
-
doc_052:
is perfectly flat and smooth with no
-
doc_053:
protuberances). The transducer is
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doc_054:
mounted on a top-hat which is bolted
-
doc_055:
on top of the seachest, such that the
-
doc_056:
transducer bottom is slightly above
-
doc_057:
the level of the seachest bottom.
-
doc_058:
For transducer removal, a water-tight
-
doc_059:
cover plate is bolted over the seachest
-
doc_060:
opening.
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doc_061:
LOCATION/DEPTH ON HULL : The seachest is located several meters
-
doc_062:
foreward and starboard of the vessel's
-
doc_063:
center point. Vessel draught is load-
-
doc_064:
dependent, and averages about 4.9 m
-
doc_065:
Hamilton-bound (outbound) and 4.4 m
-
doc_066:
Elizabeth-bound (inbound).
-
doc_067:
Within the database, transducer depth is
-
doc_068:
set to a mean nominal depth of 4 m for
-
doc_069:
all legs.
-
doc_070:
REPEATABLE ATTACHMENT : YES
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doc_071:
DATE OF MOST RECENT ATTACH. : 94/4/29
-
doc_072:
ACOUSTIC WINDOW : NO
-
doc_073:
COMMENTS : vessel length 117.5 m
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doc_074:
breadth 19.8 m
-
doc_075:
weight 4950 tonnes
-
doc_076:
speed 16 knots
-
doc_077:
-
doc_078:
ADCP INSTRUMENT CONFIGURATION
-
doc_079:
<these are normally documented automatically and are part of Codas database>
-
doc_080:
ELZ NAR NBN (NYB) NBS SLS NWA BER
-
doc_081:
DEPTH RANGE UPPER (m) : 9.5 9.5 9.5 (14) 11 20 20 9.5
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doc_082:
DEPTH RANGE LOWER (m) :15.5 15.5 47.5 (158) 107 404 404 15.5
-
doc_083:
BIN LENGTH (m) : 1 1 1 (4) 2 8 8 1
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doc_084:
NUMBER OF BINS : 8 8 40 (38) 50 50 50 8
-
doc_085:
TRANSMIT PULSE LENGTH (m) : 1 1 2 (4) 4 16 16 1
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doc_086:
BOTTOM TRACKING : no no yes (yes) yes no no no
-
doc_087:
BLANKING INTERVAL : ... 4 m ...
-
doc_088:
ENSEMBLE AVERAGING INTERVAL : ... 300 s ...
-
doc_089:
SOUND SPEED CALCULATION : ... FUNCTION OF TEMP AT TRANSDUCER ...
-
doc_090:
DIRECT COMMANDS : FH00001 E0005020099 CF25
-
doc_091:
COMMENTS : A user exit program automatically resets
-
doc_092:
the instrument configuration based upon
-
doc_093:
geographic location. The locations are
-
doc_094:
Port Elizabeth (ELZ), Verrazano Narrows
-
doc_095:
(NAR), New York Bight (NYB), Slope Sea
-
doc_096:
(SLS), Northwest Atlantic (NWA), and
-
doc_097:
Bermuda (BER). NYB and SLS are separated
-
doc_098:
by the shelf break, and SLS and NWA are
-
doc_099:
separated by the mean location of the Gulf
-
doc_100:
Stream. After 93/10/22 the NYB region
-
doc_101:
is split into north and south regions
-
doc_102:
(NBN and NBS). Prior to spring 1993
-
doc_103:
pulse length, bin length, and number of
-
doc_104:
bins were varied to find the optimal
-
doc_105:
value listed above. During 93/6/25-
-
doc_106:
93/8/12 a small region named test near
-
doc_107:
the center of the NWA region and
-
doc_108:
having an ensemble interval of several
-
doc_109:
seconds was used to observe the effects
-
doc_110:
of waves on data quality.
-
doc_111:
-
doc_112:
ADCP DATA ACQUISITION SYSTEM
-
doc_113:
SOFTWARE DEVELOPERS : RDI, Chris Humphries, Charlie Flagg,
-
doc_114:
and Joe Lewkowicz
-
doc_115:
SOFTWARE VERSIONS : DAS 2.48
-
doc_116:
DATA LOGGER, MAKE/MODEL : Oak Microsystems (12 MHz 386sx)
-
doc_117:
ADCP/LOGGER COMMUNICATION : serial
-
doc_118:
USER BUFFER VERSION : ASCII
-
doc_119:
CLOCK : PC clock
-
doc_120:
COMMENTS :
-
doc_121:
-
doc_122:
SHIP HEADING
-
doc_123:
INSTRUMENT MAKE/MODEL : Anschutz
-
doc_124:
SYNCHRO OR STEPPER : synchro before 93/6/17, stepper after
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doc_125:
SYNCHRO RATIO : 360:1
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doc_126:
COMPENSATION APPLIED : NO
-
doc_127:
GPS ATTITUDE SYSTEM : Ashtech 3DF installed 94/9/24
-
doc_128:
LOCATION OF ANTENNAS : Array located on port forward corner
-
doc_129:
of flying bridge, in an L shape
-
doc_130:
with about 3.5 m baseline distance
-
doc_131:
between antennas.
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doc_132:
RIGID ATTACHMENT : YES - stainless steel rods clamped
-
doc_133:
to brackets welded to rail.
-
doc_134:
LOGGING RATE : 1 per sec
-
doc_135:
COMMENTS : Prior to 93/4/15 the gyrocompass
-
doc_136:
exhibited resets , where it would
-
doc_137:
unexpectedly slew to 0 but then
-
doc_138:
continue to track vessel heading.
-
doc_139:
Since the vessel steams a very nearly
-
doc_140:
constant heading, the resets were
-
doc_141:
corrected for by taking the difference
-
doc_142:
in headings before and after
-
doc_143:
the reset and applying that difference
-
doc_144:
as a heading misalignment angle.
-
doc_145:
During 92/10/30-93/2/27 calibration
-
doc_146:
values for heading misalignment and
-
doc_147:
scale factor were obtained directly
-
doc_148:
from bottom tracking each trip.
-
doc_149:
Between 93/2/27-93/4/15 data are of
-
doc_150:
very poor quality due to bad weather
-
doc_151:
(see QUALITY ASSESSMENT ) and
-
doc_152:
have not been calibrated. The
-
doc_153:
reset problem was solved by using a
-
doc_154:
separate repeater and computer to
-
doc_155:
bypass the DAS-aquired gyrocompass
-
doc_156:
heading. For calibration method
-
doc_157:
after 93/4/15, see CALIBRATION .
-
doc_158:
-
doc_159:
ANCILLARY MEASUREMENTS
-
doc_160:
SURFACE TEMP AND SALINITY : thermistor at transducer; no salinity
-
doc_161:
PITCH/ROLL MEASUREMENTS : none
-
doc_162:
HYDRO CAST MEASUREMENTS : none
-
doc_163:
BIOMASS DETERMINATION : YES - Using AGCAVE.COM
-
doc_164:
DATE OF LAST CALIBRATION :
-
doc_165:
CALIBRATION COEFFICIENTS :
-
doc_166:
BEAM-AVERAGED AGC AVAILABLE?: YES
-
doc_167:
CALIBRATION NET TOWS? : YES - Plankton recorder towed one
-
doc_168:
trip per month
-
doc_169:
COMMENTS :
-
doc_170:
-
doc_171:
NAVIGATION
-
doc_172:
TRANSIT : NO
-
doc_173:
GPS : YES
-
doc_174:
MAKE/MODEL : Magnavox MX4200
-
doc_175:
SELECTIVE AVAILABILITY : YES
-
doc_176:
P-CODE : NO
-
doc_177:
DIFFERENTIAL : NO
-
doc_178:
SAMPLE INTERVAL : 1 per sec
-
doc_179:
LOCATION OF ANTENNA
-
doc_180:
RELATIVE TO TRANSDUCER : antenna on flying bridge, roughly
-
doc_181:
80 m aft, 8 m to port
-
doc_182:
TIME OBTAINED RELATIVE TO
-
doc_183:
START/END OF ENSEMBLE : end
-
doc_184:
AVERAGING/EDITING APPLIED :
-
doc_185:
LOGGED WITH ADCP DATA : YES - user exit program
-
doc_186:
LOGGED INDEPENDENTLY : NO
-
doc_187:
COMMENTS :
-
doc_188:
OTHER :
-
doc_189:
-
doc_190:
ADCP DATA PROCESSING/EDITING
-
doc_191:
PERSONNEL IN CHARGE : E. Gottlieb
-
doc_192:
SOUND SPEED CORRECTIONS : applied using transducer temperature
-
doc_193:
DATE OF PROCESSING : present
-
doc_194:
NOTABLE SCATTERING LAYERS : almost every trip a vertically migrating
-
doc_195:
scattering layer is observed just off
-
doc_196:
the shelf break
-
doc_197:
COMMENTS :
-
doc_198:
-
doc_199:
CALIBRATION
-
doc_200:
GYROCOMPASS CORRECTION : YES - from bottom tracking
-
doc_201:
WATER TRACK METHOD : NO - ship never stops during trip
-
doc_202:
BOTTOM TRACK METHOD : YES
-
doc_203:
AMOUNT OF TIME AVAILABLE : about 6 hours/trip (=about 12.5%)
-
doc_204:
TOTAL No. CALIBRATION PTS: one/trip (after reducing residuals)
-
doc_205:
TIME VARIANT :
-
doc_206:
VELOCITY DEPENDENT : MAYBE - has not yet been observed
-
doc_207:
HEADING DEPENDENT : YES - depending on outbound (heading
-
doc_208:
about 135 deg. T) or inbound (about 315)
-
doc_209:
OUTBOUND INBOUND
-
doc_210:
NUMBER OF TRIPS : 21 19
-
doc_211:
AMPLITUDE MIN : 1.001 1.001
-
doc_212:
AMPLITUDE MEAN : 1.014 1.044
-
doc_213:
AMPLITUDE MAX : 1.047 1.230
-
doc_214:
AMPLITUDE STD : 0.012 0.055
-
doc_215:
PHASE MIN : -1.61 0.21
-
doc_216:
PHASE MEAN : -1.36 0.56
-
doc_217:
PHASE MAX : -0.74 1.05
-
doc_218:
PHASE STD : 0.21 0.19
-
doc_219:
FINAL SELECTION AMPLITUDE : 1.0 1.0
-
doc_220:
FINAL SELECTION PHASE : -1.4 0.6
-
doc_221:
AGREEMENT WITH PREVIOUS
-
doc_222:
CRUISES : see statistics above
-
doc_223:
COMMENTS : Bottom tracking is done for about
-
doc_224:
six hours each trip (while traversing
-
doc_225:
the shelf), and after reducing residuals
-
doc_226:
a single value of amplitude and phase
-
doc_227:
is obtained for each trip. Statistics
-
doc_228:
are done for all available trips (see
-
doc_229:
above) and the final selection values
-
doc_230:
(assumed constant over the entire trip)
-
doc_231:
have been used to correct all trips.
-
doc_232:
For calibration method prior to
-
doc_233:
93/4/16 see SHIP HEADING .
-
doc_234:
-
doc_235:
NAVIGATION CALCULATION
-
doc_236:
NAVIGATION USED : gps
-
doc_237:
REFERENCE LAYER DEPTH RANGE : bins 5 - 15
-
doc_238:
FILTERING METHOD FOR
-
doc_239:
SMOOTHING REFERENCE LAYER
-
doc_240:
VELOCITY (FORM/WIDTH) : Blackman window, half-width = 0.5 hour
-
doc_241:
FINALIZED SHIP VEL/POSITIONS
-
doc_242:
STORED IN DATABASE : YES
-
doc_243:
COMMENTS :
-
doc_244:
-
doc_245:
QUALITY ASSESSMENT
-
doc_246:
ON-STATION VS. UNDERWAY : All data underway, no stations. Quality
-
doc_247:
ranges from excellent to poor depending
-
doc_248:
on load and sea state.
-
doc_249:
VECTOR, CONTOUR, STICK PLOTS: excellent to poor
-
doc_250:
COMMENTS : Data quality is dependent upon load
-
doc_251:
and sea state, most likely due to
-
doc_252:
signal attenuation by a bubble layer
-
doc_253:
under the hull (the hull bottom is
-
doc_254:
perfectly flat). For a quiet seas
-
doc_255:
outbound trips are of excellent quality
-
doc_256:
and inbound are fair; for very heavy
-
doc_257:
seas most data is poor. For moderate
-
doc_258:
seas overall quality ranges from good
-
doc_259:
to marginal.
-
doc_260:
-
doc_261:
REFERENCES (DATA REPORTS,ETC) :
-
doc_262:
-
doc_263:
Gottlieb, Rossby, Schwartze, Cornillon, and Flagg (1994). The Oleander
-
doc_264:
Project First-Year Results: Gulf Stream ADCP Measurements from
-
doc_265:
October 1992 to October 1993. Proceedings from the Atlantic
-
doc_266:
Climate Change Program meeting, May 1994, Princeton, NJ. ed.
-
doc_267:
Anne-Marie Wilburn.
-
doc_268:
-
doc_269:
Gottlieb, Rossby, Schwartze, and Flagg (1995). The Oleander Project:
-
doc_270:
Measuring the Gulf Stream using and ADCP mounted on a Volunteer
-
doc_271:
Observing Ship. Proceedings from the Atlantic Climate Change
-
doc_272:
Program meeting, May 1995, Miami, Florida. ed. Anne-Marie Wilburn.
-
doc_273:
-
doc_274:
(both available upon request from Anne-Marie Wilburn, AOML/NOAA,
-
doc_275:
4301 Rickenbacker Cswy, Miami, FL 33149 -or- wilburn@aoml.erl.gov)
-
doc_276:
-
doc_277:
