Deep sea sediment trap biomarker data from U.S. JGOFS Sediment Traps from the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project)

Website: https://www.bco-dmo.org/dataset/2589
Data Type: Other Field Results
Version: April 12, 2002
Version Date: 2002-04-12

Project
» U.S. JGOFS Arabian Sea (Arabian Sea)

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Prahl, FredOregon State University (OSU)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Deep Sea Sediment Trap Biomarker Data

Methods & Sampling

See Platform deployments for cruise specific documentation

Note: MS-1, MS-2, MS-3, MS-4, MS-5 in published article are equivalent to J1, J2, J3, J4, J5 in the online data files

Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902


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Data Files

File
sedtrap_biomarker.csv
(Comma Separated Values (.csv), 9.90 KB)
MD5:60e253a43db4bbe7cc38a8f5d6acd37c
Primary data file for dataset ID 2589

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Parameters

ParameterDescriptionUnits
site

Arabian Sea site designation

mooring

mooring identification

trap_type

sediment trap type: shallow, middle, deep;
13 or 21 cups

trap_id

unique identifier for each sediment trap

deploy

deployment number

depth_trap

depth of trap

meters
date_set

date of trap deployment

YYYYMMDD
lat

latitude (negative = south)

decimal degrees
lon

longitude (negative = west)

decimal degrees
cup

sediment trap cup number

date_open

date sediment trap opened

YYYMMDD
time_open

time of day sediment trap opened

hhmm
days_open

number of days trap remained open

day
flux_tot

total particle flux recovered

mg/m2/day
C_org

organic carbon, particle size < 1mm

% of total flux
C27_to_31

sum of C27, C29, C31 n-alkanes

micrograms/gram dry
Cmax

maximum C measured in n-alkanes

LCK

C37, C38, C39 alkenones

micrograms/gram dry
Uk37

alkenone unsaturation

HBI

total highly branched C25 isoprenoid alkenes

micrograms/gram dry
Cholesterol

cholesterol

micrograms/gram dry
OHC28FA_12

12-hydroxyoctacosanoic acid

micrograms/gram dry
EtChol_24

24-ethylcholesta-5-enol

micrograms/gram dry
Dinosterol

dinosterol

micrograms/gram dry
C32Hop

C32 hopan-32-ol

micrograms/gram dry


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Instruments

Dataset-specific Instrument Name
Sediment Trap
Generic Instrument Name
Sediment Trap
Generic Instrument Description
Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. This designation is used when the specific type of sediment trap was not specified by the contributing investigator.


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Deployments

TT041

Website
Platform
R/V Thomas G. Thompson
Start Date
1994-10-28
End Date
1994-11-21
Description
Methods & Sampling
PI: Fredrick G. Prahl of: Oregon State University dataset: deep sea sediment trap biomarker data dates: November 06, 1994 to May 07, 1995 location: N: 15.985 S: 15.9845 W: 61.49617 E: 61.49917 project/cruise: Arabian Sea set: TTN-041 serviced: TTN-047 recovered: TTN-055 ship: R/V Thomas Thompson Reference: Prahl, F.G., Diamond, J. and Sparrow, M.A., 2000, Annual biomarker record for export production in the central Arabian Sea, Deep-Sea Research II 47, 1581-1604

TT047

Website
Platform
R/V Thomas G. Thompson
Start Date
1995-05-03
End Date
1995-05-22
Description
Sediment Trap Servicing, Coring, Process 3

Methods & Sampling
PI: Fredrick G. Prahl of: Oregon State University dataset: deep sea sediment trap biomarker data dates: November 06, 1994 to May 07, 1995 location: N: 15.985 S: 15.9845 W: 61.49617 E: 61.49917 project/cruise: Arabian Sea set: TTN-041 serviced: TTN-047 recovered: TTN-055 ship: R/V Thomas Thompson Reference: Prahl, F.G., Diamond, J. and Sparrow, M.A., 2000, Annual biomarker record for export production in the central Arabian Sea, Deep-Sea Research II 47, 1581-1604

TT055

Website
Platform
R/V Thomas G. Thompson
Start Date
1995-12-31
End Date
1996-01-16
Description
Sediment Trap Recovery

Methods & Sampling
PI: Fredrick G. Prahl of: Oregon State University dataset: deep sea sediment trap biomarker data dates: November 06, 1994 to May 07, 1995 location: N: 15.985 S: 15.9845 W: 61.49617 E: 61.49917 project/cruise: Arabian Sea set: TTN-041 serviced: TTN-047 recovered: TTN-055 ship: R/V Thomas Thompson Reference: Prahl, F.G., Diamond, J. and Sparrow, M.A., 2000, Annual biomarker record for export production in the central Arabian Sea, Deep-Sea Research II 47, 1581-1604

JGOFS_sedTrap_S4d1

Website
Platform
JGOFS Sediment Trap
Start Date
1994-11-11
End Date
1995-04-30
Description
U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 15.985° N Longitude = 61.500° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: Fredrick G. Prahl of: Oregon State University dataset: deep sea sediment trap biomarker data dates: November 06, 1994 to May 07, 1995 location: N: 15.985 S: 15.9845 W: 61.49617 E: 61.49917 project/cruise: Arabian Sea set: TTN-041 serviced: TTN-047 recovered: TTN-055 ship: R/V Thomas Thompson Reference: Prahl, F.G., Diamond, J. and Sparrow, M.A., 2000, Annual biomarker record for export production in the central Arabian Sea, Deep-Sea Research II 47, 1581-1604

JGOFS_sedTrap_S4d2

Website
Platform
JGOFS Sediment Trap
Start Date
1995-05-17
End Date
1995-12-24
Description
U.S. JGOFS Arabian Sea Sediment Trap Mooring Latitude = 15.985° N Longitude = 61.500° E Note: MS-1, MS-2, MS-3, MS-4, MS-5 are equivalent to J1, J2, J3, J4, J5 in the data files Honjo, S., J. Dymond, W. Prell, V. Ittekot. 1999. Monsoon-controlled export fluxes to the interior of the Arabian Sea. Deep Sea Research II. 46: 1859-1902

Methods & Sampling
PI: Fredrick G. Prahl of: Oregon State University dataset: deep sea sediment trap biomarker data dates: November 06, 1994 to May 07, 1995 location: N: 15.985 S: 15.9845 W: 61.49617 E: 61.49917 project/cruise: Arabian Sea set: TTN-041 serviced: TTN-047 recovered: TTN-055 ship: R/V Thomas Thompson Reference: Prahl, F.G., Diamond, J. and Sparrow, M.A., 2000, Annual biomarker record for export production in the central Arabian Sea, Deep-Sea Research II 47, 1581-1604


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Project Information

U.S. JGOFS Arabian Sea (Arabian Sea)


Coverage: Arabian Sea


The U.S. Arabian Sea Expedition which began in September 1994 and ended in January 1996, had three major components: a U.S. JGOFS Process Study, supported by the National Science Foundation (NSF); Forced Upper Ocean Dynamics, an Office of Naval Research (ONR) initiative; and shipboard and aircraft measurements supported by the National Aeronautics and Space Administration (NASA). The Expedition consisted of 17 cruises aboard the R/V Thomas Thompson, year-long moored deployments of five instrumented surface buoys and five sediment-trap arrays, aircraft overflights and satellite observations. Of the seventeen ship cruises, six were allocated to repeat process survey cruises, four to SeaSoar mapping cruises, six to mooring and benthic work, and a single calibration cruise which was essentially conducted in transit to the Arabian Sea.



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Program Information

U.S. Joint Global Ocean Flux Study (U.S. JGOFS)


Coverage: Global


The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.

The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).



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