Dataset: sedtrap_rad
Deployment: AESOPS_Array

Radionuclides from moored sediment trap samples

Principal Investigator:

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

BCO-DMO Data Manager:

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

Project:

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

Version:

September 17, 2002

Deployment Synonyms:

AESOPS-M1, AESOPS-M2, AESOPS-M3, AESOPS-M4, AESOPS-M5, AESOPS-M6, AESOPS-M7a, AESOPS-M7b, sediment trap

Version Date:

2002-09-17

Data URL:

https://www.bco-dmo.org/dataset-deployment/452430/data

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Description

Radionuclides from moored sediment trap samples

Methods & Sampling

Dataset acquisition description

   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

Deployment-specific acquisition description

   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 Processing Description

Dataset Processing Description

More information about this dataset deployment

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

Supplied Name	Supplied description	Supplied Units	Standard Name
lat	latitude, (negative = South)	decimal degrees	lat
lon	longitude, (negative = West)	decimal degrees	lon
mooring	mooring number		mooring
Pa231_err	protactinium-231 error	dpm/gram	no_bcodmo_term
Be10_part_lt1mm	beryllium-10, particulate	atoms/gram	no_bcodmo_term
depth_ocean	ocean depth	meters	no_bcodmo_term
Be10_err	beryllium-10 error	atoms/gram	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	dpm/gram	no_bcodmo_term
U238_err	uranium-238 error	dpm/gram	no_bcodmo_term
Pb210_part_lt1mm	lead-210, particulate	dpm/gram	no_bcodmo_term
Pb210_err	lead-210 error	dpm/gram	no_bcodmo_term
Th232_part_lt1mm	thorium-232, particulate	dpm/gram	no_bcodmo_term
Th232_err	thorium-232 error	dpm/gram	no_bcodmo_term
Th230_part_lt1mm	thorium-230, particulate	dpm/gram	no_bcodmo_term
Th230_err	thorium-230 error	dpm/gram	no_bcodmo_term
Pa231_part_lt1mm	protactinium-231, particulate	dpm/gram	no_bcodmo_term

Database

Contribute Data

Dataset: sedtrap_rad
Deployment: AESOPS_Array

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: sedtrap_radDeployment: AESOPS_Array

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: sedtrap_rad
Deployment: AESOPS_Array