Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3
Upwelling intensity in the South China Sea has changed over glacial-interglacial cycles in response to orbital-scale changes in the East Asian Monsoon. Here, we evaluate new multi-proxy records of two sediment cores from the north-eastern South China Sea to uncover millennial-scale changes in winter...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2015
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.849813 https://doi.org/10.1594/PANGAEA.849813 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.849813 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.849813 2023-05-15T16:30:15+02:00 Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 Sadatzki, Henrik Sarnthein, Michael Andersen, Nils MEDIAN LATITUDE: 17.761667 * MEDIAN LONGITUDE: 119.599167 * SOUTH-BOUND LATITUDE: 17.251667 * WEST-BOUND LONGITUDE: 119.453333 * NORTH-BOUND LATITUDE: 18.271667 * EAST-BOUND LONGITUDE: 119.745000 * DATE/TIME START: 1994-04-21T00:00:00 * DATE/TIME END: 1994-04-21T00:00:00 2015-09-23 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.849813 https://doi.org/10.1594/PANGAEA.849813 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.849813 https://doi.org/10.1594/PANGAEA.849813 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sadatzki, Henrik; Sarnthein, Michael; Andersen, Nils (2015): Changes in monsoon-driven upwelling in the South China Sea over glacial Terminations I and II: a multi-proxy record. International Journal of Earth Sciences, https://doi.org/10.1007/s00531-015-1227-6 Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.849813 https://doi.org/10.1007/s00531-015-1227-6 2023-01-20T07:33:33Z Upwelling intensity in the South China Sea has changed over glacial-interglacial cycles in response to orbital-scale changes in the East Asian Monsoon. Here, we evaluate new multi-proxy records of two sediment cores from the north-eastern South China Sea to uncover millennial-scale changes in winter monsoondriven upwelling over glacial Terminations I and II. On the basis of U/Th-based speleothem chronology, we compare these changes with sediment records of summer monsoondriven upwelling east of South Vietnam. Ocean upwelling is traced by reduced (UK'37-based) temperature and increased nutrient and productivity estimates of sea surface water (d13C on planktic foraminifera, accumulation rates of alkenones, chlorins, and total organic carbon). Accordingly, strong winter upwelling occurred north-west of Luzon (Philippines) during late Marine Isotope Stage 6.2, Heinrich (HS) and Greenland stadials (GS) HS-11, GS-26, GS-25, HS-1, and the Younger Dryas. During these stadials, summer upwelling decreased off South Vietnam and sea surface salinity reached a maximum suggesting a drop in monsoon rains, concurrent with speleothem records of aridity in China. In harmony with a stadial-to-interstadial see-saw pattern, winter upwelling off Luzon in turn was weak during interstadials, in particular those of glacial Terminations I and II, when summer upwelling culminated east of South Vietnam. Most likely, this upwelling terminated widespread deep-water stratification, coeval with the deglacial rise in atmospheric CO2. Yet, a synchronous maximum in precipitation fostered estuarine overturning circulation in the South China Sea, in particular as long as the Borneo Strait was closed when sea level dropped below -40 m. Dataset Greenland PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(119.453333,119.745000,18.271667,17.251667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Upwelling intensity in the South China Sea has changed over glacial-interglacial cycles in response to orbital-scale changes in the East Asian Monsoon. Here, we evaluate new multi-proxy records of two sediment cores from the north-eastern South China Sea to uncover millennial-scale changes in winter monsoondriven upwelling over glacial Terminations I and II. On the basis of U/Th-based speleothem chronology, we compare these changes with sediment records of summer monsoondriven upwelling east of South Vietnam. Ocean upwelling is traced by reduced (UK'37-based) temperature and increased nutrient and productivity estimates of sea surface water (d13C on planktic foraminifera, accumulation rates of alkenones, chlorins, and total organic carbon). Accordingly, strong winter upwelling occurred north-west of Luzon (Philippines) during late Marine Isotope Stage 6.2, Heinrich (HS) and Greenland stadials (GS) HS-11, GS-26, GS-25, HS-1, and the Younger Dryas. During these stadials, summer upwelling decreased off South Vietnam and sea surface salinity reached a maximum suggesting a drop in monsoon rains, concurrent with speleothem records of aridity in China. In harmony with a stadial-to-interstadial see-saw pattern, winter upwelling off Luzon in turn was weak during interstadials, in particular those of glacial Terminations I and II, when summer upwelling culminated east of South Vietnam. Most likely, this upwelling terminated widespread deep-water stratification, coeval with the deglacial rise in atmospheric CO2. Yet, a synchronous maximum in precipitation fostered estuarine overturning circulation in the South China Sea, in particular as long as the Borneo Strait was closed when sea level dropped below -40 m. |
format |
Dataset |
author |
Sadatzki, Henrik Sarnthein, Michael Andersen, Nils |
spellingShingle |
Sadatzki, Henrik Sarnthein, Michael Andersen, Nils Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 |
author_facet |
Sadatzki, Henrik Sarnthein, Michael Andersen, Nils |
author_sort |
Sadatzki, Henrik |
title |
Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 |
title_short |
Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 |
title_full |
Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 |
title_fullStr |
Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 |
title_full_unstemmed |
Stable isotope, UK'37, SST, chlorin, alkenone and TOC data of sediment cores GIK17927-2 and GIK17928-3 |
title_sort |
stable isotope, uk'37, sst, chlorin, alkenone and toc data of sediment cores gik17927-2 and gik17928-3 |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.849813 https://doi.org/10.1594/PANGAEA.849813 |
op_coverage |
MEDIAN LATITUDE: 17.761667 * MEDIAN LONGITUDE: 119.599167 * SOUTH-BOUND LATITUDE: 17.251667 * WEST-BOUND LONGITUDE: 119.453333 * NORTH-BOUND LATITUDE: 18.271667 * EAST-BOUND LONGITUDE: 119.745000 * DATE/TIME START: 1994-04-21T00:00:00 * DATE/TIME END: 1994-04-21T00:00:00 |
long_lat |
ENVELOPE(119.453333,119.745000,18.271667,17.251667) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Supplement to: Sadatzki, Henrik; Sarnthein, Michael; Andersen, Nils (2015): Changes in monsoon-driven upwelling in the South China Sea over glacial Terminations I and II: a multi-proxy record. International Journal of Earth Sciences, https://doi.org/10.1007/s00531-015-1227-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.849813 https://doi.org/10.1594/PANGAEA.849813 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.849813 https://doi.org/10.1007/s00531-015-1227-6 |
_version_ |
1766019962033405952 |