Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882
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 d18O record is presented from Ocean Drilling Program Site 882 over the Pliocene/Quaternary b...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.772032 2024-09-15T17:59:39+00:00 Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 Swann, George E A LATITUDE: 50.363300 * LONGITUDE: 167.599800 * DATE/TIME START: 1992-08-05T00:00:00 * DATE/TIME END: 1992-08-08T00:00:00 * MINIMUM ELEVATION: -3255.0 m * MAXIMUM ELEVATION: -3255.0 m 2010 text/tab-separated-values, 354 data points https://doi.pangaea.de/10.1594/PANGAEA.772032 https://doi.org/10.1594/PANGAEA.772032 en eng PANGAEA Swann, George E A; Maslin, Mark; Leng, Melanie J; Sloane, Hilary J; Haug, Gerald H (2006): Diatom d18O evidence for the development of the modern halocline system in the subarctic northwest Pacific at the onset of major Northern Hemisphere glaciation. Paleoceanography, 21, PA1009, https://doi.org/10.1029/2005PA001147 https://doi.pangaea.de/10.1594/PANGAEA.772032 https://doi.org/10.1594/PANGAEA.772032 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Swann, George E A (2010): Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma. Earth and Planetary Science Letters, 297(1-2), 332-338, https://doi.org/10.1016/j.epsl.2010.06.035 145-882 AGE COMPCORE Composite Core Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other δ18O DSDP/ODP/IODP sample designation Joides Resolution Leg145 Mass spectrometer Finnigan MAT 253 North Pacific Ocean Ocean Drilling Program ODP Reference of data Sample code/label dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.77203210.1016/j.epsl.2010.06.03510.1029/2005PA001147 2024-07-24T02:31:31Z 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 d18O 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 d18Odiatom of c. 4 per mil 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. Dataset Bering Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(167.599800,167.599800,50.363300,50.363300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
145-882 AGE COMPCORE Composite Core Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other δ18O DSDP/ODP/IODP sample designation Joides Resolution Leg145 Mass spectrometer Finnigan MAT 253 North Pacific Ocean Ocean Drilling Program ODP Reference of data Sample code/label |
spellingShingle |
145-882 AGE COMPCORE Composite Core Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other δ18O DSDP/ODP/IODP sample designation Joides Resolution Leg145 Mass spectrometer Finnigan MAT 253 North Pacific Ocean Ocean Drilling Program ODP Reference of data Sample code/label Swann, George E A Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 |
topic_facet |
145-882 AGE COMPCORE Composite Core Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other δ18O DSDP/ODP/IODP sample designation Joides Resolution Leg145 Mass spectrometer Finnigan MAT 253 North Pacific Ocean Ocean Drilling Program ODP Reference of data Sample code/label |
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 d18O 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 d18Odiatom of c. 4 per mil 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 |
Dataset |
author |
Swann, George E A |
author_facet |
Swann, George E A |
author_sort |
Swann, George E A |
title |
Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 |
title_short |
Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 |
title_full |
Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 |
title_fullStr |
Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 |
title_full_unstemmed |
Stable oxygen isotope ratios of diatoms and relative species abundances in ODP Site 145-882 |
title_sort |
stable oxygen isotope ratios of diatoms and relative species abundances in odp site 145-882 |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.772032 https://doi.org/10.1594/PANGAEA.772032 |
op_coverage |
LATITUDE: 50.363300 * LONGITUDE: 167.599800 * DATE/TIME START: 1992-08-05T00:00:00 * DATE/TIME END: 1992-08-08T00:00:00 * MINIMUM ELEVATION: -3255.0 m * MAXIMUM ELEVATION: -3255.0 m |
long_lat |
ENVELOPE(167.599800,167.599800,50.363300,50.363300) |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_source |
Supplement to: Swann, George E A (2010): Salinity changes in the North West Pacific Ocean during the late Pliocene/early Quaternary from 2.73 Ma to 2.52 Ma. Earth and Planetary Science Letters, 297(1-2), 332-338, https://doi.org/10.1016/j.epsl.2010.06.035 |
op_relation |
Swann, George E A; Maslin, Mark; Leng, Melanie J; Sloane, Hilary J; Haug, Gerald H (2006): Diatom d18O evidence for the development of the modern halocline system in the subarctic northwest Pacific at the onset of major Northern Hemisphere glaciation. Paleoceanography, 21, PA1009, https://doi.org/10.1029/2005PA001147 https://doi.pangaea.de/10.1594/PANGAEA.772032 https://doi.org/10.1594/PANGAEA.772032 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.77203210.1016/j.epsl.2010.06.03510.1029/2005PA001147 |
_version_ |
1810436749242925056 |