On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study
The global distributions of the radionuclides 230Th, 231Pa, and 10Be are simulated with a biogeochemical ocean general circulation model. Sensitivity experiments for changes in the composition of the particle composition ratio (POC:CaCO3:BSi:clay, POC = particulate organic carbon, CaCO3 = calcium ca...
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Language: | English |
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American Geophysical Union
2006
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Online Access: | https://hdl.handle.net/1956/1315 https://doi.org/10.1029/2004gb002389 |
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ftunivbergen:oai:bora.uib.no:1956/1315 2023-05-15T17:51:04+02:00 On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study Heinze, Christoph Gehlen, M. Land, C. 2006-06-16 3203972 bytes application/pdf https://hdl.handle.net/1956/1315 https://doi.org/10.1029/2004gb002389 eng eng American Geophysical Union urn:issn:0886-6236 https://hdl.handle.net/1956/1315 https://doi.org/10.1029/2004gb002389 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Peer reviewed Journal article 2006 ftunivbergen https://doi.org/10.1029/2004gb002389 2023-03-14T17:41:05Z The global distributions of the radionuclides 230Th, 231Pa, and 10Be are simulated with a biogeochemical ocean general circulation model. Sensitivity experiments for changes in the composition of the particle composition ratio (POC:CaCO3:BSi:clay, POC = particulate organic carbon, CaCO3 = calcium carbonate, BSi = biogenic silica) are carried out with and without biogeochemical feedback. The absolute water column concentrations of the radionuclides react significantly to changes in the particle rain composition. The radionuclide ratio in the sediment, however, is less sensitive to changes in the particle composition ratio. Still, selected areas could record composition ratio changes reliably for paleo reconstructions. Measurements of 230Th, 231Pa, and 10Be in the water column have the potential to monitor changes in the large scale CaCO3 production which may occur as a consequence of ocean acidification due to oceanic uptake of anthropogenic CO2. Article in Journal/Newspaper Ocean acidification University of Bergen: Bergen Open Research Archive (BORA-UiB) Global Biogeochemical Cycles 20 2 n/a n/a |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Heinze, Christoph Gehlen, M. Land, C. On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
description |
The global distributions of the radionuclides 230Th, 231Pa, and 10Be are simulated with a biogeochemical ocean general circulation model. Sensitivity experiments for changes in the composition of the particle composition ratio (POC:CaCO3:BSi:clay, POC = particulate organic carbon, CaCO3 = calcium carbonate, BSi = biogenic silica) are carried out with and without biogeochemical feedback. The absolute water column concentrations of the radionuclides react significantly to changes in the particle rain composition. The radionuclide ratio in the sediment, however, is less sensitive to changes in the particle composition ratio. Still, selected areas could record composition ratio changes reliably for paleo reconstructions. Measurements of 230Th, 231Pa, and 10Be in the water column have the potential to monitor changes in the large scale CaCO3 production which may occur as a consequence of ocean acidification due to oceanic uptake of anthropogenic CO2. |
format |
Article in Journal/Newspaper |
author |
Heinze, Christoph Gehlen, M. Land, C. |
author_facet |
Heinze, Christoph Gehlen, M. Land, C. |
author_sort |
Heinze, Christoph |
title |
On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study |
title_short |
On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study |
title_full |
On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study |
title_fullStr |
On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study |
title_full_unstemmed |
On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study |
title_sort |
on the potential of 230th, 231pa, and 10be for marine rain ratio determinations: a modeling study |
publisher |
American Geophysical Union |
publishDate |
2006 |
url |
https://hdl.handle.net/1956/1315 https://doi.org/10.1029/2004gb002389 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
urn:issn:0886-6236 https://hdl.handle.net/1956/1315 https://doi.org/10.1029/2004gb002389 |
op_doi |
https://doi.org/10.1029/2004gb002389 |
container_title |
Global Biogeochemical Cycles |
container_volume |
20 |
container_issue |
2 |
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n/a |
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n/a |
_version_ |
1766158071855316992 |