Dataset: th234_pump

Name: Th-234 in particulate and dissolved phases; POC/PON from RVIB Nathaniel B. Palmer and R/V Roger Revelle cruises in the Southern Ocean, 1997-1998 (U.S. JGOFS AESOPS project)
Published: 1999-12-13
Keywords: oceans

View Data: to access data, check the deployments below

Cite This Dataset

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:

Kenneth O. Buesseler (Woods Hole Oceanographic Institution, WHOI)

Co-Principal Investigator:

Dr Michael Bacon (Woods Hole Oceanographic Institution, WHOI)

J. Kirk Cochran (Stony Brook University, SUNY Stony Brook)

BCO-DMO Data Manager:

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

Version:

final

Version Date:

1999-12-13

Validated:

Yes

Current State:

Final no updates expected

Th-234 in particulate and dissolved phases; POC/PON from RVIB Nathaniel B. Palmer and R/V Roger Revelle cruises in the Southern Ocean, 1997-1998 (U.S. JGOFS AESOPS project)

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Description

Th-234 in particulate and dissolved phases; POC/PON

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KIWI6	RR6 APFZ Survey 1 cruise AESOPS	1997-10-20	R/V Roger Revelle	Timothy Cowles (Chief Scientist)	data info
KIWI7	RR7 APFZ Process 1 cruise AESOPS	1997-12-02	R/V Roger Revelle	Richard Barber (Chief Scientist)	data info
KIWI8	RR8 APFZ Survey 2 cruise AESOPS	1998-01-08	R/V Roger Revelle	Kenneth H. Coale (Chief Scientist)	data info
KIWI9	RR9 APFZ Process 2 cruise AESOPS	1998-02-13	R/V Roger Revelle	Wilford D. Gardner (Chief Scientist)	data info
NBP-96-04A	NBP9604A NBP96_4A	1996-10-02	RVIB Nathaniel B. Palmer	Walker O. Smith (Chief Scientist)	data info
NBP-97-01	NBP9701 NBP97_1	1997-01-13	RVIB Nathaniel B. Palmer	John F. Marra (Chief Scientist)	data info
NBP-97-03	NBP9703 NBP97_3	1997-04-04	RVIB Nathaniel B. Palmer	Hugh W. Ducklow (Chief Scientist)	data info

Instruments

Slurper Pump

Supplied Name: Ken Buesseler's Slurper pump

Supplied Description:

Ken Buesseler's Slurper th234_pump, thorium-234 pump.

Instrument Type

Generic Name: Slurper Pump

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/30/

Generic Description:

The 'Slurper' is a custom designed in situ pumping system that pumps seawater in a way that allows large-volume sampling of pre-determined depth intervals. The 'Slurper' was used during US JGOFS cruises to acquire samples for 234-Thorium and POC/PON analysis (Buesseler et al., 1988). The 'Slurper' sampling system comprised a positive displacement pump coupled to a DC motor. Pump speed and sample volume were controlled via shipboard laptop computer.

References:

Buesseler, K. O., L. Ball, J. Andrews, C. Benitez-Nelson, R. Belastock, F. Chai and Y.Chao. 1998. Upper Ocean Export of Particulate Organic Carbon in the Arabian Sea derived from Thorium-234. Deep-Sea Res. II, Arabian Sea Volume, Vol. 45, No. 10-11, 2461-2488.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
event	event number from event log		event
sta	station number from event log		sta
lat	latitude in decimal degrees		lat
lon	longitude in decimal degrees		lon
sample	integrated=in-situ pump (Slurper) integrated over depth range discrete=in-situ pump (Slurper) at one discrete depth		sample
depth_n	nominal depth	meters	depth_n
Th234_p_gt70	particulate Th234 activity in the size fraction greater than 70 microns	dpm/liter	Th234_part
err_p_gt70	error of particulate Th234 activity greater than 70 microns; 1 sigma		Th234_part_err
Th234_p_1to70	particulate Th234 activity in the size fraction between 1 and 70 microns	dpm/liter	Th234_part
err_p_1to70	error of particulate Th234 activity between 1 and 70 microns; 1 sigma		Th234_part_err
Th234_d	dissolved Th234 activity	dpm/liter	Th234_d_tot
Th234_d_err	error of dissolved Th234 activity; 1 sigma	dpm/liter	Th234_d_tot_err
Th234_t	total Th234 activity	dpm/liter	Th234_tot
Th234_t_err	error of total Th234 activity; 1 sigma	dpm/liter	Th234_tot_err
flag_q	Th234 data quality code a = good b = Mn cartridge efficiency poor c = other error		q_flag
POC_gt70	particulate organic carbon in the size fraction greater than 70 microns	umol/liter	POC_JG
PON_gt70	particulate organic nitrogen in the size fraction greater than 70 microns	umol/liter	PON_JG
POC_1to70	particulate organic carbon in the size fraction between 1 and 70 microns	umol/liter	POC_JG
PON_1to70	particulate organic nitrogen in the size fraction between 1 and 70 microns	umol/liter	PON_JG

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Dataset: th234_pump