Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
<p><strong>DMO NOTE on GNAZT Suspended Particulate Th/Pa:</strong><br /> - version 4 served on 29 Sept 2015; combined both dissolved and particulate Th & Pa datasets into one.<br /> <strong><span style=\"background-color:#FFA07A\">See datas...
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Biological and Chemical Oceanography Data Management Office (BCO-DMO)
2014
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dataone:sha256:4d5a5dfbb9d721579154ce76ea3743dcf56569f4046f9e09d707162e3e9c89fb 2024-11-03T19:45:29+00:00 Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Robert F. Anderson Martin Q. Fleisher Christopher T. Hayes 2014-08-08T00:00:00Z https://search.dataone.org/view/sha256:4d5a5dfbb9d721579154ce76ea3743dcf56569f4046f9e09d707162e3e9c89fb unknown Biological and Chemical Oceanography Data Management Office (BCO-DMO) oceans Dataset 2014 dataone:urn:node:BCODMO 2024-11-03T19:08:36Z <p><strong>DMO NOTE on GNAZT Suspended Particulate Th/Pa:</strong><br /> - version 4 served on 29 Sept 2015; combined both dissolved and particulate Th & Pa datasets into one.<br /> <strong><span style=\"background-color:#FFA07A\">See dataset \"</span><a href=\"http://www.bco-dmo.org/dataset/3847\"><span style=\"background-color:#FFA07A\">GT10-11 - Dissolved and Particulate Th and Pa</span></a><span style=\"background-color:#FFA07A\">\"</span></strong><br /> - version 3: none<br /> - version 2: 8 Aug. 2014<br /> - version 1: 31 Jan. 2013</p> <p><strong>Notes:</strong></p> <p>This data refers to the \"suspended\" size fraction of seawater particles (written with the suffix \"_susp\"). The particulate samples were collected by in-situ pumping over paired 0.8?m Pall Supor800 polyethersulfone filters behind a 51 ?m Sefar polyester mesh prefilter (See sampling Methodology below for details). Analysis of the paired Supor filters represents a particle size class approximating 0.45-51 µm (Bishop et al. 2012), while the top filter alone represents 0.8-51 µm and it is this size class referred to here as \"suspended\". We measured a select number of top and bottom filters separately for radionuclides and found that the bottom filters had radionuclide levels that were indistinguishable from clean filter process blanks. Therefore whether or not samples were analyzed as top and bottom paired, or the top filter alone, we refer to the particle size class represented as 0.8-51 µm.</p> <p>Radionuclide concentrations are given as the mass of radionuclide contained in a given volume of pumped seawater: femtograms (fg = 10-15 g) radionuclide per kilogram (kg) seawater for 230Th and 231Pa, and picograms (pg = 10-12 g) radionuclide per kg seawater for 232Th. Sample size was measured by volume (liters) of seawater pumped by mass flow controllers on the in-situ pumps, but we converted seawater volume to seawater mass using a fixed seawater density of 1.025 kg/L. The units are written simply as fg/kg and pg/kg. Note that the counterpart radionuclide data in the dissolved phase (<0.45 µm) from this CRUISE are also reported in fg and pg per kilogram of seawater. Concentrations below detection are listed as ‘bdl’.</p> Dataset North Atlantic Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE) |
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Open Polar |
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Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE) |
op_collection_id |
dataone:urn:node:BCODMO |
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oceans |
spellingShingle |
oceans Robert F. Anderson Martin Q. Fleisher Christopher T. Hayes Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) |
topic_facet |
oceans |
description |
<p><strong>DMO NOTE on GNAZT Suspended Particulate Th/Pa:</strong><br /> - version 4 served on 29 Sept 2015; combined both dissolved and particulate Th & Pa datasets into one.<br /> <strong><span style=\"background-color:#FFA07A\">See dataset \"</span><a href=\"http://www.bco-dmo.org/dataset/3847\"><span style=\"background-color:#FFA07A\">GT10-11 - Dissolved and Particulate Th and Pa</span></a><span style=\"background-color:#FFA07A\">\"</span></strong><br /> - version 3: none<br /> - version 2: 8 Aug. 2014<br /> - version 1: 31 Jan. 2013</p> <p><strong>Notes:</strong></p> <p>This data refers to the \"suspended\" size fraction of seawater particles (written with the suffix \"_susp\"). The particulate samples were collected by in-situ pumping over paired 0.8?m Pall Supor800 polyethersulfone filters behind a 51 ?m Sefar polyester mesh prefilter (See sampling Methodology below for details). Analysis of the paired Supor filters represents a particle size class approximating 0.45-51 µm (Bishop et al. 2012), while the top filter alone represents 0.8-51 µm and it is this size class referred to here as \"suspended\". We measured a select number of top and bottom filters separately for radionuclides and found that the bottom filters had radionuclide levels that were indistinguishable from clean filter process blanks. Therefore whether or not samples were analyzed as top and bottom paired, or the top filter alone, we refer to the particle size class represented as 0.8-51 µm.</p> <p>Radionuclide concentrations are given as the mass of radionuclide contained in a given volume of pumped seawater: femtograms (fg = 10-15 g) radionuclide per kilogram (kg) seawater for 230Th and 231Pa, and picograms (pg = 10-12 g) radionuclide per kg seawater for 232Th. Sample size was measured by volume (liters) of seawater pumped by mass flow controllers on the in-situ pumps, but we converted seawater volume to seawater mass using a fixed seawater density of 1.025 kg/L. The units are written simply as fg/kg and pg/kg. Note that the counterpart radionuclide data in the dissolved phase (<0.45 µm) from this CRUISE are also reported in fg and pg per kilogram of seawater. Concentrations below detection are listed as ‘bdl’.</p> |
format |
Dataset |
author |
Robert F. Anderson Martin Q. Fleisher Christopher T. Hayes |
author_facet |
Robert F. Anderson Martin Q. Fleisher Christopher T. Hayes |
author_sort |
Robert F. Anderson |
title |
Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) |
title_short |
Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) |
title_full |
Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) |
title_fullStr |
Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) |
title_full_unstemmed |
Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) |
title_sort |
depth profiles of suspended dissolved and particulate 232th, 230th, and 231pa from r/v knorr kn199-04, kn204-01, subtropical north atlantic ocean from 2010-2011 (u.s. geotraces nat project) |
publisher |
Biological and Chemical Oceanography Data Management Office (BCO-DMO) |
publishDate |
2014 |
url |
https://search.dataone.org/view/sha256:4d5a5dfbb9d721579154ce76ea3743dcf56569f4046f9e09d707162e3e9c89fb |
genre |
North Atlantic |
genre_facet |
North Atlantic |
_version_ |
1814739578481803264 |