Contributors | Affiliation | Role |
---|---|---|
Prell, Warren | Brown University | Principal Investigator |
Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
See Platform deployments for cruise specific documentation
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Processing notes:
December 2002, Warren Prell
1. Data for -1 to O interval are measure on unconsolidated phytodetritus layer
sitting on top of sediment water interface
2. Letter for each core refers to a multicore section
3. Opal determined using Mortlock and Froelich (1989, DSR, vol 36, 1415-1426)
4. CaCO3 detemined on automated Carbonate rig similar to Ostermann et al. (1990)
5. CaCO3-ICP = 2.5* Ca determined from ICP.
6. Corg and N% determined using technique of Verardo et al. (1990, DSR, 37, 157-165)
7. Ca, Mn, Fe, Al, Ti, and P determined on ICP-AES using technique of
Murray and Leinen (1996, GCA, 3869-3878)
8. Density calculated from dried weight of known volume of sample extruded from subcore
9. Sedimentation rates estimated from C-14 dating of monospecific foraminifer shells
from sampled depths. For all but JGOFS-1, both menardii and sacculifer (when available)
ages were used to calculate sedimentation rate. In practice JGOFS-5 had one sacculifer
and 5 menardii and Owen Ridge 2 had 8 menardii and 6 sacculifer, the rest have only
menardii. For JGOFS-1, the data on the 2 species measured were significantly different
so two separate rates were calculated- one for each species (C14_sed_rate calculated
from G. menardii, and C14_sed_rate_2 from G. sacculifer).
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References: Mortlock, R.A., and Froelich, P.N., 1989. A simple method for the rapid determination of biogenic opal in pelagic marine sediments. Deep-Sea Res., 36:1415-1426. Ostermann, D.R., Karbott, D., and Curry, W.B., 1990. Automated system to measure carbonate concentration of sediments. Woods Hole Oceanog. Inst. Tech. Rept., WHOI-90-03. Verardo, D., Froelich, P.N., and McIntyre, A., 1990. Determination of organic carbon and nitrogen in marine sediments using the Carlo Erba NA-1500 analyzer. Deep-Sea Research, 37: 157-165. Murray, R. W. and Leinen, M. 1996. Scavenged excess aluminum and its relationship to bulk titanium in biogenic sediment from the central equatorial Pacific Ocean. Geochimica et Cosmochimica Acta, 60 (20): 3869-3878.
File |
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sed_comp.csv (Comma Separated Values (.csv), 6.07 KB) MD5:4b3a15aaef72648e79a218b41255661a Primary data file for dataset ID 2590 |
Parameter | Description | Units |
site | Arabian Sea site designation | |
core_id | core identification | |
lat | latitude | decimal degrees |
lon | longitude | decimal degrees |
depth_w | ocean depth | meters |
depth_core | average depth (from core top) of sediment sampling interval. -1 to 0 interval refers to unconsolidated phytodetritus layer | centimeters |
depth_core_sd | standard deviation of interval | centimeters |
Si_opal | opal | percent |
CaCO3 | calcium carbonate | percent |
CaCO3_ICP | calcium carbonate by ICP | percent |
C_org | organic carbon | percent |
N | nitrogen | percent |
Al | aluminum | percent |
Fe | iron | percent |
Ti | titanium | percent |
Mn | manganese | percent |
P | phosphorus | percent |
density | calculated from dried weight of known volume | grams per cubic centimeter |
C14_sed_rate | sedimentation rate estimated from C14 dating of forams | centimeters per 1000 years |
C14_sed_rate_2 | sedimentation rate estimated from C14 dating of forams | centimeters per 1000 years |
Dataset-specific Instrument Name | Multi Corer |
Generic Instrument Name | Multi Corer |
Generic Instrument Description | The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor. Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408. |
Dataset-specific Instrument Name | Piston Corer |
Generic Instrument Name | Piston Corer |
Generic Instrument Description | The piston corer is a type of bottom sediment sampling device. A long, heavy tube is plunged into the seafloor to extract samples of mud sediment. A piston corer uses a "free fall" of the coring rig to achieve a greater initial force on impact than gravity coring. A sliding piston inside the core barrel reduces inside wall friction with the sediment and helps to evacuate displaced water from the top of the corer. A piston corer is capable of extracting core samples up to 90 feet in length. |
Website | |
Platform | R/V Thomas G. Thompson |
Start Date | 1994-10-28 |
End Date | 1994-11-21 |
Description | Methods & Sampling PI: Warren Prell of: Brown University dataset: Sediment Composition dates: November 1994 and May 1995 location: N: 17.812 S: 10.0345 W: 57.5058 E: 65.0852 project/cruise: Arabian Sea ship: R/V Thomas Thompson PI Notes and Methodology Some additional undocumented information was submitted with this data and is available for download as Excel files: -- core meta data -- fauna flux data -- C14 data for G.menardii and G.sacculifer Processing Description U.S. JGOFS Arabian Sea Process Study Sediment Composition References: Mortlock, R.A., and Froelich, P.N., 1989. A simple method for the rapid determination of biogenic opal in pelagic marine sediments. Deep-Sea Res., 36:1415-1426. Ostermann, D.R., Karbott, D., and Curry, W.B., 1990. Automated system to measure carbonate concentration of sediments. Woods Hole Oceanog. Inst. Tech. Rept., WHOI-90-03. Verardo, D., Froelich, P.N., and McIntyre, A., 1990. Determination of organic carbon and nitrogen in marine sediments using the Carlo Erba NA-1500 analyzer. Deep-Sea Research, 37: 157-165. Murray, R. W. and Leinen, M. 1996. Scavenged excess aluminum and its relationship to bulk titanium in biogenic sediment from the central equatorial Pacific Ocean. Geochimica et Cosmochimica Acta, 60 (20): 3869-3878. |
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: Warren Prell of: Brown University dataset: Sediment Composition dates: November 1994 and May 1995 location: N: 17.812 S: 10.0345 W: 57.5058 E: 65.0852 project/cruise: Arabian Sea ship: R/V Thomas Thompson PI Notes and Methodology Some additional undocumented information was submitted with this data and is available for download as Excel files: -- core meta data -- fauna flux data -- C14 data for G.menardii and G.sacculifer Processing Description U.S. JGOFS Arabian Sea Process Study Sediment Composition References: Mortlock, R.A., and Froelich, P.N., 1989. A simple method for the rapid determination of biogenic opal in pelagic marine sediments. Deep-Sea Res., 36:1415-1426. Ostermann, D.R., Karbott, D., and Curry, W.B., 1990. Automated system to measure carbonate concentration of sediments. Woods Hole Oceanog. Inst. Tech. Rept., WHOI-90-03. Verardo, D., Froelich, P.N., and McIntyre, A., 1990. Determination of organic carbon and nitrogen in marine sediments using the Carlo Erba NA-1500 analyzer. Deep-Sea Research, 37: 157-165. Murray, R. W. and Leinen, M. 1996. Scavenged excess aluminum and its relationship to bulk titanium in biogenic sediment from the central equatorial Pacific Ocean. Geochimica et Cosmochimica Acta, 60 (20): 3869-3878. |
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.
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).
Funding Source | Award |
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National Science Foundation (NSF) |