Dataset: th234_pump
Deployment: KIWI9

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

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)

Project:

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

Version:

December 13, 1999

Deployment Synonyms:

RR9, https://usjgofs.whoi.edu/aesops/aboutrr8.html, AESOPS

Version Date:

1999-12-13

Data URL:

https://www.bco-dmo.org/dataset-deployment/451227/data

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Description

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

Methods & Sampling

Dataset acquisition description

Deployment-specific acquisition description

   PI:              Ken Buesseler, Michael Bacon and Kirk Cochran
   of:              Woods Hole Oceanographic Institution (Buesseler,Bacon)
                    and SUNY/Stony Brook (Cochran)
   dataset:         Th-234 in particulate and dissolved phases; POC/PON
   dates:           February 16, 1998 to March 15, 1998
   location:        N: -52.9775  S: -70.4002  W: -174.733  E: -165.9148
   project/cruise:  AESOPS/KIWI9 - APFZ Polar Front Process 2 cruise
   ship:            R/V Roger A. Revelle
 
   Methodology Reference
   K. Buesseler, L. Ball, J. Andrews, C. Benitez-Nelson,
   R. Belastock, F. Chai and Y. Chao. Upper ocean export of
   particulate organic carbon in the Arabian Sea derived from
   thorium-234. Deep-Sea Research II, Vol. 45, No. 10-11, p.2461.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

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

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

Database

Contribute Data

Dataset: th234_pump
Deployment: KIWI9

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: th234_pumpDeployment: KIWI9

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: th234_pump
Deployment: KIWI9