Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum
We measured oxygen isotopes and Mg/Ca ratios in the surface-dwelling planktonic foraminifer Globigerinoides ruber (white s.s.) and the thermocline dweller Pulleniatina obliquiloculata to investigate upper ocean spatial variability in the Indo-Pacific Warm Pool (IPWP). We focused on three critical ti...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.831190 2024-09-15T18:31:06+00:00 Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum Xu, Jian Kuhnt, Wolfgang Holbourn, Ann E Regenberg, Marcus Andersen, Nils MEDIAN LATITUDE: -3.106885 * MEDIAN LONGITUDE: 125.819889 * SOUTH-BOUND LATITUDE: -15.310930 * WEST-BOUND LONGITUDE: 111.525000 * NORTH-BOUND LATITUDE: 19.456700 * EAST-BOUND LONGITUDE: 159.361000 * DATE/TIME START: 1990-02-17T00:00:00 * DATE/TIME END: 2008-03-06T07:58:00 2010 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.831190 https://doi.org/10.1594/PANGAEA.831190 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.831190 https://doi.org/10.1594/PANGAEA.831190 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Xu, Jian; Kuhnt, Wolfgang; Holbourn, Ann E; Regenberg, Marcus; Andersen, Nils (2010): Indo-Pacific Warm Pool variability during the Holocene and Last Glacial Maximum. Paleoceanography, 25(4), PA4230, https://doi.org/10.1029/2010PA001934 Ocean Drilling Program ODP dataset publication series 2010 ftpangaea https://doi.org/10.1594/PANGAEA.83119010.1029/2010PA001934 2024-07-24T02:31:21Z We measured oxygen isotopes and Mg/Ca ratios in the surface-dwelling planktonic foraminifer Globigerinoides ruber (white s.s.) and the thermocline dweller Pulleniatina obliquiloculata to investigate upper ocean spatial variability in the Indo-Pacific Warm Pool (IPWP). We focused on three critical time intervals: the Last Glacial Maximum (LGM; 18-21.5 ka), the early Holocene (8-9 ka), and the late Holocene (0-2 ka). Our records from 24 stations in the South China Sea, Timor Sea, Indonesian seas, and western Pacific indicate overall dry and cool conditions in the IPWP during the LGM with a low thermal gradient between surface and thermocline waters. During the early Holocene, sea surface temperatures increased by ~3°C over the entire region, indicating intensification of the IPWP. However, in the eastern Indian Ocean (Timor Sea), the thermocline gradually shoaled from the LGM to early Holocene, reflecting intensification of the subsurface Indonesian Throughflow (ITF). Increased surface salinity in the South China Sea during the Holocene appears related to northward displacement of the monsoonal rain belt over the Asian continent together with enhanced influx of saltier Pacific surface water through the Luzon Strait and freshwater export through the Java Sea. Opening of the freshwater portal through the Java Sea in the early Holocene led to a change in the vertical structure of the ITF from surface- to thermocline-dominated flow and to substantial freshening of Timor Sea thermocline waters. Other/Unknown Material Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(111.525000,159.361000,19.456700,-15.310930) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Ocean Drilling Program ODP |
spellingShingle |
Ocean Drilling Program ODP Xu, Jian Kuhnt, Wolfgang Holbourn, Ann E Regenberg, Marcus Andersen, Nils Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum |
topic_facet |
Ocean Drilling Program ODP |
description |
We measured oxygen isotopes and Mg/Ca ratios in the surface-dwelling planktonic foraminifer Globigerinoides ruber (white s.s.) and the thermocline dweller Pulleniatina obliquiloculata to investigate upper ocean spatial variability in the Indo-Pacific Warm Pool (IPWP). We focused on three critical time intervals: the Last Glacial Maximum (LGM; 18-21.5 ka), the early Holocene (8-9 ka), and the late Holocene (0-2 ka). Our records from 24 stations in the South China Sea, Timor Sea, Indonesian seas, and western Pacific indicate overall dry and cool conditions in the IPWP during the LGM with a low thermal gradient between surface and thermocline waters. During the early Holocene, sea surface temperatures increased by ~3°C over the entire region, indicating intensification of the IPWP. However, in the eastern Indian Ocean (Timor Sea), the thermocline gradually shoaled from the LGM to early Holocene, reflecting intensification of the subsurface Indonesian Throughflow (ITF). Increased surface salinity in the South China Sea during the Holocene appears related to northward displacement of the monsoonal rain belt over the Asian continent together with enhanced influx of saltier Pacific surface water through the Luzon Strait and freshwater export through the Java Sea. Opening of the freshwater portal through the Java Sea in the early Holocene led to a change in the vertical structure of the ITF from surface- to thermocline-dominated flow and to substantial freshening of Timor Sea thermocline waters. |
format |
Other/Unknown Material |
author |
Xu, Jian Kuhnt, Wolfgang Holbourn, Ann E Regenberg, Marcus Andersen, Nils |
author_facet |
Xu, Jian Kuhnt, Wolfgang Holbourn, Ann E Regenberg, Marcus Andersen, Nils |
author_sort |
Xu, Jian |
title |
Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum |
title_short |
Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum |
title_full |
Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum |
title_fullStr |
Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum |
title_full_unstemmed |
Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera from the Holocene and the Last Glacial Maximum |
title_sort |
stable oxygen isotope and mg/ca ratios of planktonic foraminifera from the holocene and the last glacial maximum |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.831190 https://doi.org/10.1594/PANGAEA.831190 |
op_coverage |
MEDIAN LATITUDE: -3.106885 * MEDIAN LONGITUDE: 125.819889 * SOUTH-BOUND LATITUDE: -15.310930 * WEST-BOUND LONGITUDE: 111.525000 * NORTH-BOUND LATITUDE: 19.456700 * EAST-BOUND LONGITUDE: 159.361000 * DATE/TIME START: 1990-02-17T00:00:00 * DATE/TIME END: 2008-03-06T07:58:00 |
long_lat |
ENVELOPE(111.525000,159.361000,19.456700,-15.310930) |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Supplement to: Xu, Jian; Kuhnt, Wolfgang; Holbourn, Ann E; Regenberg, Marcus; Andersen, Nils (2010): Indo-Pacific Warm Pool variability during the Holocene and Last Glacial Maximum. Paleoceanography, 25(4), PA4230, https://doi.org/10.1029/2010PA001934 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.831190 https://doi.org/10.1594/PANGAEA.831190 |
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.83119010.1029/2010PA001934 |
_version_ |
1810472703592759296 |