Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma
Recent research has increasingly advocated a role for the North Pacific Ocean in modulating global climatic changes over both the last glacial cycle and further back into the geological record. Here a diatom δ18O record is presented from Ocean Drilling Program Site 882 over the Pliocene/Quaternary b...
Published in: | Earth and Planetary Science Letters |
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Online Access: | https://doi.org/10.1016/j.epsl.2010.06.035 https://nottingham-repository.worktribe.com/file/1013305/1/post_NHG_7_oa.pdf https://nottingham-repository.worktribe.com/output/1013305 |
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ftunnottinghamrr:oai:nottingham-repository.worktribe.com:1013305 2023-05-15T15:43:49+02:00 Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma Swann, George E.A. 2010-01-01 https://doi.org/10.1016/j.epsl.2010.06.035 https://nottingham-repository.worktribe.com/file/1013305/1/post_NHG_7_oa.pdf https://nottingham-repository.worktribe.com/output/1013305 unknown Elsevier https://nottingham-repository.worktribe.com/output/1013305 Earth and Planetary Science Letters Volume 297 Issue 1-2 doi:https://doi.org/10.1016/j.epsl.2010.06.035 https://nottingham-repository.worktribe.com/file/1013305/1/post_NHG_7_oa.pdf 0012-821X doi:10.1016/j.epsl.2010.06.035 openAccess Journal Article 2010 ftunnottinghamrr https://doi.org/10.1016/j.epsl.2010.06.035 2022-10-13T22:11:31Z Recent research has increasingly advocated a role for the North Pacific Ocean in modulating global climatic changes over both the last glacial cycle and further back into the geological record. Here a diatom δ18O record is presented from Ocean Drilling Program Site 882 over the Pliocene/Quaternary boundary from 2.73 Ma to 2.52 Ma (MIS G6-MIS 99). Large changes in δ18Odiatom of c. 4‰ from 2.73 Ma onwards are documented to occur on a timeframe broadly coinciding with glacial-interglacial cycles. These changes are primarily attributed to large scale inputs of meltwater from glacials surrounding the North Pacific Basin and the Bering Sea. Despite these inputs and associated change in surface water salinity, on the basis of existing opal and Uk37 temperature data and new modelled water column densities, no evidence exists to suggests a removal of the halocline stratification or a resumption of the high productivity system similar to that which prevailed prior to 2.73 Ma. The permanence of the halocline suggests that the region played a key role in driving global climatic changes over the early glacial-interglacial cycles that followed the onset of major Northern Hemisphere Glaciation by inhibiting deep water upwelling and ventilation of CO2 to the atmosphere. Article in Journal/Newspaper Bering Sea University of Nottingham: Repository@Nottingham Bering Sea Pacific Earth and Planetary Science Letters 297 1-2 332 338 |
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Open Polar |
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University of Nottingham: Repository@Nottingham |
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ftunnottinghamrr |
language |
unknown |
description |
Recent research has increasingly advocated a role for the North Pacific Ocean in modulating global climatic changes over both the last glacial cycle and further back into the geological record. Here a diatom δ18O record is presented from Ocean Drilling Program Site 882 over the Pliocene/Quaternary boundary from 2.73 Ma to 2.52 Ma (MIS G6-MIS 99). Large changes in δ18Odiatom of c. 4‰ from 2.73 Ma onwards are documented to occur on a timeframe broadly coinciding with glacial-interglacial cycles. These changes are primarily attributed to large scale inputs of meltwater from glacials surrounding the North Pacific Basin and the Bering Sea. Despite these inputs and associated change in surface water salinity, on the basis of existing opal and Uk37 temperature data and new modelled water column densities, no evidence exists to suggests a removal of the halocline stratification or a resumption of the high productivity system similar to that which prevailed prior to 2.73 Ma. The permanence of the halocline suggests that the region played a key role in driving global climatic changes over the early glacial-interglacial cycles that followed the onset of major Northern Hemisphere Glaciation by inhibiting deep water upwelling and ventilation of CO2 to the atmosphere. |
format |
Article in Journal/Newspaper |
author |
Swann, George E.A. |
spellingShingle |
Swann, George E.A. Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma |
author_facet |
Swann, George E.A. |
author_sort |
Swann, George E.A. |
title |
Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma |
title_short |
Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma |
title_full |
Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma |
title_fullStr |
Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma |
title_full_unstemmed |
Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma |
title_sort |
salinity changes in the north west pacific ocean during the late pliocene/early quaternary from 2.73 ma to 2.52 ma |
publisher |
Elsevier |
publishDate |
2010 |
url |
https://doi.org/10.1016/j.epsl.2010.06.035 https://nottingham-repository.worktribe.com/file/1013305/1/post_NHG_7_oa.pdf https://nottingham-repository.worktribe.com/output/1013305 |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_relation |
https://nottingham-repository.worktribe.com/output/1013305 Earth and Planetary Science Letters Volume 297 Issue 1-2 doi:https://doi.org/10.1016/j.epsl.2010.06.035 https://nottingham-repository.worktribe.com/file/1013305/1/post_NHG_7_oa.pdf 0012-821X doi:10.1016/j.epsl.2010.06.035 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2010.06.035 |
container_title |
Earth and Planetary Science Letters |
container_volume |
297 |
container_issue |
1-2 |
container_start_page |
332 |
op_container_end_page |
338 |
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1766378026670489600 |