Preliminary sediment trap particulates collected from the U.S. JGOFS Eqpac Moored Sediment Trap Array in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project

Website: https://www.bco-dmo.org/dataset/2618
Version: June 9, 1994
Version Date: 1994-06-09

Project
» U.S. JGOFS Equatorial Pacific (EqPac)

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


Dataset Description

Preliminary EqPac sediment trap particulates <1 mm equator south


Methods & Sampling

   PI:              Susumu Honjo
   of:              Woods Hole Oceanographic Institution
   dataset:         Preliminary EqPac sediment trap particulates < 1mm equator south
   dates:           February 3, 1992 to December 13, 1992
   location:        N: 0.061  S: -11.967  W: -139.756  E: -135.0338 
   project/cruise:  Mooring Deployment EQPAC-1
   ship:            Wecoma
 
   PI Notes:
   Sediment trap data for moorings at 2, 5, and 9 north are reported by
   R. Collier, see systems entry  'sedtrapnorth'. 
   
   For more detail on sediment trap arrays see:  Cruise Report, EQPAC - 1 The
   First Leg of A JGOFS Study of the Equatorial Pacific, R/V Wecoma W9201B,
   January 12, 1992 to February 8, 1992, Chief Scientist:  Jack Dymond, Oregon
   State University 
 

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Data Files

File
sedtrapsouth.csv
(Comma Separated Values (.csv), 15.03 KB)
MD5:5fb9ece937fcd47123a5d2d84970490d
Primary data file for dataset ID 2618

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Parameters

ParameterDescriptionUnits
mooringmooring identification
latlatitude degrees
lonlongitude degrees
depth_tdepth of trap meters
sampleoriginator's internal sample number
date_opendate sediment trap opened, as YYYYMMDD
daysnumber of days trap remained open
cupsediment trap cup number
mass_fmass particle flux size fraction milligrams/square meter/day
C_org_forganic Carbon flux size fraction micromoles/square meter/day
C_inorg_finorganic Carbon flux size fraction micromoles/square meter/day
N_fNitrogen flux size fraction mircomoles/square meter/day
SiO4_bio_fbiogenic silica flux size fraction mircomoles/square meter/day
Al_faluminium flux size fraction micrograms/square meter/day


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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

EqPac-Array

Website
Platform
JGOFS Sediment Trap
Start Date
1992-01-12
End Date
1992-02-08
Description
Sediment Trap Deployments at 140°W that relate to seven locations between 9°N and 12°S


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Project Information

U.S. JGOFS Equatorial Pacific (EqPac)


Coverage: Equatorial Pacific


The U.S. EqPac process study consisted of repeat meridional sections (12°N -12°S) across the equator in the central and eastern equatorial Pacific from 95°W to 170°W during 1992. The major scientific program was focused at 140° W consisting of two meridional surveys, two equatorial surveys, and a benthic survey aboard the R/V Thomas Thompson. Long-term deployments of current meter and sediment trap arrays augmented the survey cruises. NOAA conducted boreal spring and fall sections east and west of 140°W from the R/V Baldridge and R/V Discoverer. Meteorological and sea surface observations were obtained from NOAA's in place TOGA-TAO buoy network.

The scientific objectives of this study were to determine the fluxes of carbon and related elements, and the processes controlling these fluxes between the Equatorial Pacific euphotic zone and the atmosphere and deep ocean. A broad overview of the program at the 140°W site is given by Murray et al. (Oceanography, 5: 134-142, 1992). A full description of the Equatorial Pacific Process Study, including the international context and the scientific results, appears in a series of Deep-Sea Research Part II special volumes:

Topical Studies in Oceanography, A U.S. JGOFS Process Study in the Equatorial Pacific (1995), Deep-Sea Research Part II, Volume 42, No. 2/3.

Topical Studies in Oceanography, A U.S. JGOFS Process Study in the Equatorial Pacific. Part 2 (1996), Deep-Sea Research Part II, Volume 43, No. 4/6.

Topical Studies in Oceanography, A U.S. JGOFS Process Study in the Equatorial Pacific (1997), Deep-Sea Research Part II, Volume 44, No. 9/10.

Topical Studies in Oceanography, The Equatorial Pacific JGOFS Synthesis (2002), Deep-Sea Research Part II, Volume 49, Nos. 13/14.



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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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