<div><p>Samples were collected using either:a) in-situ battery powered pump, the "Slurper", or b) ship’s seawater line. In general, 200 liter samples were passed sequentially through a Nitex screen (53 micron), Quartz filter (1 micron) and two thorium adsorber cartridges.</p>
<p>Samples were collected on legs 1 (Jan.), 2 (March), 4 (July) and 5 (August) with a few additional samples in early July (SeaSoar cruise). On each cruise: Surface samples were collected at every station (n>30); 0-100 meter composite samples were colelcted at every intermediate nd long station (n>14); and discrete depth samples were collected at every long station (n>5).</p>
<p>At sea analyses included: a) direct beta counting for all filters and some adsorbers samples counted 4-5 times to ensure accuracy and precision and b) direct gamma counting for adsorbers.</p>
<p>Post-cruise analyses included: a) CHN on all filters for POC content and b) radiochemical purification and samples plus standards counted on calibrated detectors.</p>
<p>Reference:<br />
Buesseler, Ken, Lary Ball, John Andrews, Claudia Benitez-Nelson, Rebecca Belastock, Fei Chai and Yi Chao (1998). Upper ocean export of particulate organic carbon in the Arabian Sea derived from thorium-234 in Arabian Sea Expedition, Part I. Deep-Sea Research, 45(10-11): 2461-2487, U.S. JGOFS Contribution No. 411.</p></div>
Th-234 in particulate and dissolved phases; POC/PON
<div><p>Th-234 in particulate and dissolved phases; POC/PON</p></div>
th234_pump
2523
th234_pump
2009-09-24T12:22:36-04:00
2009-09-24T12:22:36-04:00
2020-03-30T09:19:32-04:00
urn:bcodmo:dataset:2523
Th-234 in particulate and dissolved phases; POC/PON from R/V Thomas G. Thompson TT043, TT045, TT049, TT050 cruises in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project)
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Buesseler, K. O. (1999) Th-234 in particulate and dissolved phases; POC/PON from R/V Thomas G. Thompson TT043, TT045, TT049, TT050 cruises in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 06 January 1997) Version Date 1999-01-04 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/2523 [access date]
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06 January 1997
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