Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca
Paired measurements of Mg/Ca and δ18O of Globigerenoides sacculifer from an Eastern Arabian Sea (EAS) sediment core indicate that sea-surface temperature (SST) varied within 2oC and sea-surface salinity within 2 psu during the last 100 ka. SST was coldest (~27oC) during Marine Isotope Stage (MIS) 4...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.624.6952 2023-05-15T13:47:45+02:00 Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca V. K. Banakar B. S. Mahesh G. Burr A. R. Chodankar The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.6952 http://drs.nio.org/drs/bitstream/2264/3592/1/Quat_Res_73_535a.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.6952 http://drs.nio.org/drs/bitstream/2264/3592/1/Quat_Res_73_535a.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://drs.nio.org/drs/bitstream/2264/3592/1/Quat_Res_73_535a.pdf text ftciteseerx 2016-01-08T15:10:05Z Paired measurements of Mg/Ca and δ18O of Globigerenoides sacculifer from an Eastern Arabian Sea (EAS) sediment core indicate that sea-surface temperature (SST) varied within 2oC and sea-surface salinity within 2 psu during the last 100 ka. SST was coldest (~27oC) during Marine Isotope Stage (MIS) 4 and 2. Sea-surface salinity was highest (~37.5 psu) during most of the last glacial period (~60- 18 ka), concurrent with increased δ18OG.sacculifer and C/N ratios of organic matter and indicative of sustained intense winter monsoons. SST time series are influenced by both Greenland and Antarctic climates. However, the sea-surface salinity time series and the deglacial warming in the SST record (beginning at ~18 ka) compare well with the LR04 benthic δ18O-stack and Antarctic temperatures. This suggests a teleconnection between the climate in the Southern Hemisphere and the EAS. Therefore, the last 100-ka variability in EAS climatology appears to have evolved in response to a combination of global climatic forcings and regional monsoons. The most intense summer monsoons within the Holocene occurred at ~8 ka and are marked by SST cooling of ~1oC, sea-surface salinity decrease of 0.5 psu, and δ18OG.sacculifer decrease of 0.2 ‰. Text Antarc* Antarctic Greenland Unknown Antarctic Greenland |
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description |
Paired measurements of Mg/Ca and δ18O of Globigerenoides sacculifer from an Eastern Arabian Sea (EAS) sediment core indicate that sea-surface temperature (SST) varied within 2oC and sea-surface salinity within 2 psu during the last 100 ka. SST was coldest (~27oC) during Marine Isotope Stage (MIS) 4 and 2. Sea-surface salinity was highest (~37.5 psu) during most of the last glacial period (~60- 18 ka), concurrent with increased δ18OG.sacculifer and C/N ratios of organic matter and indicative of sustained intense winter monsoons. SST time series are influenced by both Greenland and Antarctic climates. However, the sea-surface salinity time series and the deglacial warming in the SST record (beginning at ~18 ka) compare well with the LR04 benthic δ18O-stack and Antarctic temperatures. This suggests a teleconnection between the climate in the Southern Hemisphere and the EAS. Therefore, the last 100-ka variability in EAS climatology appears to have evolved in response to a combination of global climatic forcings and regional monsoons. The most intense summer monsoons within the Holocene occurred at ~8 ka and are marked by SST cooling of ~1oC, sea-surface salinity decrease of 0.5 psu, and δ18OG.sacculifer decrease of 0.2 ‰. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
V. K. Banakar B. S. Mahesh G. Burr A. R. Chodankar |
spellingShingle |
V. K. Banakar B. S. Mahesh G. Burr A. R. Chodankar Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca |
author_facet |
V. K. Banakar B. S. Mahesh G. Burr A. R. Chodankar |
author_sort |
V. K. Banakar |
title |
Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca |
title_short |
Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca |
title_full |
Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca |
title_fullStr |
Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca |
title_full_unstemmed |
Climatology of the Eastern Arabian Sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18O and Mg/Ca |
title_sort |
climatology of the eastern arabian sea during the last glacial cycle reconstructed from paired measurement of foraminiferal δ18o and mg/ca |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.6952 http://drs.nio.org/drs/bitstream/2264/3592/1/Quat_Res_73_535a.pdf |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
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Antarc* Antarctic Greenland |
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Antarc* Antarctic Greenland |
op_source |
http://drs.nio.org/drs/bitstream/2264/3592/1/Quat_Res_73_535a.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.6952 http://drs.nio.org/drs/bitstream/2264/3592/1/Quat_Res_73_535a.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766247814606618624 |