Dataset: sedtrap_rad

Name: Radionuclides from moored sediment trap samples from RVIB Nathaniel B. Palmer cruises and JGOFS AESOPS Sediment Traps in the Southern Ocean in 1997 (U.S. JGOFS AESOPS project)
Published: 2002-09-17
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-53.0305 E:176.8862 S:-76.4954 W:-168.6723

Project:

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

Program:

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

Principal Investigator:

Robert F. Anderson (Lamont-Doherty Earth Observatory, LDEO)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

September 17, 2002

Version Date:

2002-09-17

Validated:

Yes

Current State:

Final no updates expected

Radionuclides from moored sediment trap samples from RVIB Nathaniel B. Palmer cruises and JGOFS AESOPS Sediment Traps in the Southern Ocean in 1997 (U.S. JGOFS AESOPS project)

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Description

Radionuclides from moored sediment trap samples

Methods & Sampling

   PI:              Bob Anderson
   of:              Lamont-Doherty Earth Observatory
   dataset:         Radionuclides from moored sediment trap samples
   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
 
   Methodology

Data Files

File
sedtrap_rad.csv (Comma Separated Values (.csv), 6.74 KB) MD5:98402f5897ee57e2607254843e6a8efc Primary data file for dataset ID 2763

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AESOPS_Array	AESOPS-M1 AESOPS-M2 AESOPS-M3 AESOPS-M4 AESOPS-M5 AESOPS-M6 AESOPS-M7a AESOPS-M7b sediment trap	1996-11-28	JGOFS Sediment Trap	Susumu Honjo (Chief Scientist) Jack Dymond (Co-Chief Scientist)	data info
NBP-96-5	NBP9605 NBP96_5	1996-11-11	RVIB Nathaniel B. Palmer	Jack Dymond (Chief Scientist)	data info
NBP-98-2	NBP9802 NBP98_2	1998-02-25	RVIB Nathaniel B. Palmer	Susumu Honjo (Chief Scientist)	data info

Instruments

Accelerator Mass Spectrometer

Supplied Description:

Instrument Type

Generic Name: Accelerator Mass Spectrometer

Acronym: AMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB17/

Generic Description:

An AMS measures "long-lived radionuclides that occur naturally in our environment. AMS uses a particle accelerator in conjunction with ion sources, large magnets, and detectors to separate out interferences and count single atoms in the presence of 1x1015 (a thousand million million) stable atoms, measuring the mass-to-charge ratio of the products of sample molecule disassociation, atom ionization and ion acceleration." AMS permits ultra low-level measurement of compound concentrations and isotope ratios that traditional alpha-spectrometry cannot provide. More from Purdue University: http://www.physics.purdue.edu/primelab/introduction/ams.html

Inductively Coupled Plasma Mass Spectrometer

Supplied Name: Inductively Coupled Plasma Mass Spectrometry

Supplied Description:

Instrument Type

Generic Name: Inductively Coupled Plasma Mass Spectrometer

Acronym: ICP Mass Spec

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/

Generic Description:

An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer.

Sediment Trap

Supplied Description:

Instrument Type

Generic Name: Sediment Trap

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/33/

Generic 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.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
mooring	mooring number		mooring
lat	latitude, (negative = South)	decimal degrees	lat
lon	longitude, (negative = West)	decimal degrees	lon
depth_ocean	ocean depth	meters	no_bcodmo_term
depth_trap	depth of sediment trap	meters	no_bcodmo_term
date_mid	middle of collection period for an individual sample or middle of combined collection period for composite samples	YYYYMMDD	no_bcodmo_term
days_open	number of days trap remained open	days	no_bcodmo_term
cup	cup number(s) from which sample was collected		no_bcodmo_term
pm_f	total particulate matter flux recovered, time-weighted for composite samples	milligrams/m2/day	no_bcodmo_term
U238_part_lt1mm	uranium-238, particulate < 1mm	dpm/gram	no_bcodmo_term
U238_err	uranium-238 error	dpm/gram	no_bcodmo_term
Pb210_part_lt1mm	lead-210, particulate < 1mm	dpm/gram	no_bcodmo_term
Pb210_err	lead-210 error	dpm/gram	no_bcodmo_term
Th232_part_lt1mm	thorium-232, particulate < 1mm	dpm/gram	no_bcodmo_term
Th232_err	thorium-232 error	dpm/gram	no_bcodmo_term
Th230_part_lt1mm	thorium-230, particulate < 1mm	dpm/gram	no_bcodmo_term
Th230_err	thorium-230 error	dpm/gram	no_bcodmo_term
Pa231_part_lt1mm	protactinium-231, particulate < 1mm	dpm/gram	no_bcodmo_term
Pa231_err	protactinium-231 error	dpm/gram	no_bcodmo_term
Be10_part_lt1mm	beryllium-10, particulate < 1mm	atoms/gram	no_bcodmo_term
Be10_err	beryllium-10 error	atoms/gram	no_bcodmo_term

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Database

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Dataset: sedtrap_rad