Deep sea sediment trap lipid data from U.S. JGOFS Sediment Traps deployed in the Ross Sea, Southern Ocean, 1996-1998 (U.S. JGOFS AESOPS project)

Website: https://www.bco-dmo.org/dataset/2768
Version: 17 March 2009
Version Date: 2009-03-17

Project
» U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Wakeham, StuartSkidaway Institute of Oceanography (SkIO)Chief Scientist, Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Deep sea sediment trap lipid data

Methods & Sampling

PI:               Stuart Wakeham
of:               Skidaway Institute of Oceanography
dataset:          Deep sea sediment trap lipid data

project/cruise:   AESOPS/Southern Ocean 1996-1997 Mooring Deployment
                    Deployment: NBP 96-5 
                    Recovery: NBP 98-2 Benthic Cruise
ship:             R/V Nathaniel B. Palmer


Reference:       Neutral lipids, acids, and total lipids were analyzed
                  according to methods in:
                  Wakeham et al., Deep-Sea Res. II 44: 2131-2162 (1997)

Raw combined lipid data (downloadable excel format files)
 
 Modification history:  YYMMDD
    090317:  latitude and longitude values changeded to negative
             to indicate West and South
 

[ table of contents | back to top ]

Data Files

File
sedtrap_lipids.csv
(Comma Separated Values (.csv), 2.43 KB)
MD5:aebcbb98b4ca56791cb65b26549e3472
Primary data file for dataset ID 2768

[ table of contents | back to top ]

Parameters

ParameterDescriptionUnits
siteSouthern Ocean site designation
mooringMooring identification
trap_typeparticle interceptor (xs area 0.017 m2) IRS=indented rotating sphere valve in line C=sample carousel in line
deployDeployment number
depth_trapDepth of trap meters
date_beginDate of trap deployment YYYYMMDD
latLatitude decimal degrees
lonLongitude decimal degrees
carouselIdentification number of sample carousel on multi-trap arrays
cupSample cup number (position) in carousel
date_openDate sample cup opened YYYYMMDD
time_openTime sample cup opened hhmm
days_openElapsed time sample cup collected particle flux days
sampleUnique analytical ID# given to each sample
lipids_neutTotal of chromatographically-resolved compounds in the neutral lipid fraction micrograms/m2/day
lipids_acidTotal of chromatographically-resolved compounds in the acidic fraction micrograms/m2/day
lipids_totSum of neutral and acidic fractions micrograms/m2/day


[ table of contents | back to top ]

Instruments

Dataset-specific Instrument Name
IRS Sediment Trap
Generic Instrument Name
Sediment Trap - IRS
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. The Indented Rotating Sphere (IRS) Sediment Trap is described in Peterson et al. (Field evaluation of a valved sediment trap. 1993. Limnology and Oceanography, 38, pp. 1741-1761 and Novel techniques for collection of sinking particles in the ocean and determining their settling rates. 2005. Limnology and Oceanography Methods 3, pp. 520-532). The IRS trap consists of four cylindrical modules; a particle interceptor, an IRS valve; a skewed funnel, and an eleven sample carousel (designated IRSC trap). The key to the trap design is the patented IRS valve located between the particle interceptor and particle accumulator portions of the trap. The valve and carousel are regulated by a TattleTale IVA (manufactured by Onset Computer Corp.) microprocessor and custom software. The IRS sediment trap was specifically designed to exclude zooplankton (Trull et al. 2008. Deep-Sea Research II v.55 pp. 1684-1695).


[ table of contents | back to top ]

Deployments

NBP-96-5

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1996-11-11
End Date
1996-12-01
Description
Moorings Deployment

Methods & Sampling
PI: Stuart Wakeham of: Skidaway Institute of Oceanography dataset: Deep sea sediment trap lipid data dates: August 30, 1996 to March 19, 1998 location: N: -53.0305 S: -76.49542 W: 176.88623 E: -168.6723 project/cruise: AESOPS/Southern Ocean 1996-1997 Mooring Deployment Deployment: NBP 96-5 Recovery: NBP 98-2 Benthic Cruise ship: R/V Nathaniel B. Palmer Reference: Neutral lipids, acids, and total lipids were analyzed according to methods in: Wakeham et al., Deep-Sea Res. II 44: 2131-2162 (1997) Raw combined lipid data (excel format file) Modification history: YYMMDD 090317: latitude and longitude values changeded to negative to indicate West and South

NBP-98-2

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1998-02-25
End Date
1998-04-03
Description
Benthic Process and Moorings Recovery

Methods & Sampling
PI: Stuart Wakeham of: Skidaway Institute of Oceanography dataset: Deep sea sediment trap lipid data dates: August 30, 1996 to March 19, 1998 location: N: -53.0305 S: -76.49542 W: 176.88623 E: -168.6723 project/cruise: AESOPS/Southern Ocean 1996-1997 Mooring Deployment Deployment: NBP 96-5 Recovery: NBP 98-2 Benthic Cruise ship: R/V Nathaniel B. Palmer Reference: Neutral lipids, acids, and total lipids were analyzed according to methods in: Wakeham et al., Deep-Sea Res. II 44: 2131-2162 (1997) Raw combined lipid data (excel format file) Modification history: YYMMDD 090317: latitude and longitude values changeded to negative to indicate West and South

AESOPS_Array

Website
Platform
JGOFS Sediment Trap
Start Date
1996-11-28
End Date
1998-01-27
Description
AESOPS sediment trap and current meter moorings Mooring M1 was set at 53.031°S 174.730°W in 5441 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M2 was set at 56.895°S 170.165°W in 4924 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M3 was set at 60.283°S 170.056°W in 3958 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M4 was set at 63.149°S 169.897°W in 2886 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M5 was set at 66.161°S 168.672°W in 3016 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M6 was set at 73.543°S 176.886°E in 566 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M7a was set at 76.491°S 177.872°W in 567 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. Mooring M7b was set at 76.495°S 178.022°W in 582 meters of water during cruise NBP 96-5 and recovered during cruise NBP 98-2. View a graphic showing the location of AESOPS mooring arrays, courtesy of Suzanne O'Hara of Lamont-Doherty Earth Observatory, Columbia University.

Methods & Sampling
PI: Stuart Wakeham of: Skidaway Institute of Oceanography dataset: Deep sea sediment trap lipid data dates: August 30, 1996 to March 19, 1998 location: N: -53.0305 S: -76.49542 W: 176.88623 E: -168.6723 project/cruise: AESOPS/Southern Ocean 1996-1997 Mooring Deployment Deployment: NBP 96-5 Recovery: NBP 98-2 Benthic Cruise ship: R/V Nathaniel B. Palmer Reference: Neutral lipids, acids, and total lipids were analyzed according to methods in: Wakeham et al., Deep-Sea Res. II 44: 2131-2162 (1997) Raw combined lipid data (excel format file)


[ table of contents | back to top ]

Project Information

U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)


Coverage: Southern Ocean, Ross Sea


The U.S. Southern Ocean JGOFS program, called Antarctic Environment and Southern Ocean Process Study (AESOPS), began in August 1996 and continued through March 1998. The U.S. JGOFS AESOPS program focused on two regions in the Southern Ocean: an east/west section of the Ross-Sea continental shelf along 76.5°S, and a second north/south section of the Southern Ocean spanning the Antarctic Circumpolar Current (ACC) at ~170°W (identified as the Polar Front). The science program, coordinated by Antarctic Support Associates (ASA), comprised eleven cruises using the R.V.I.B Nathaniel B. Palmer and R/V Roger Revelle as observational platforms and for deployment and recovery of instrumented moorings and sediment-trap arrays. The Ross-Sea region was occupied on six occasions and the Polar Front five times. Mapping data were obtained from SeaSoar, ADCP, and bathymetric systems. Satellite coverage was provided by the NASA SeaWiFS and the NOAA/NASA Pathfinder programs.



[ table of contents | back to top ]

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).



[ table of contents | back to top ]