DOI: 10.1007/s00531-015-1227-6
Scopus记录号: 2-s2.0-84938675728
论文题名: Changes in monsoon-driven upwelling in the South China Sea over glacial Terminations I and II: a multi-proxy record
作者: Sadatzki H. ; Sarnthein M. ; Andersen N.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2016
卷: 105, 期: 4 起始页码: 1273
结束页码: 1285
语种: 英语
英文关键词: Coastal upwelling
; East Asian Monsoon
; Glacial Terminations I and II
; Palaeoproductivity
; South China Sea
; Stable isotopes/planktic δ13C
Scopus关键词: climate variation
; glacial-interglacial cycle
; monsoon
; paleoclimate
; paleoproductivity
; planktonic foraminifera
; proxy climate record
; sediment core
; stable isotope
; upwelling
; Luzon
; Pacific Ocean
; Philippines
; South China Sea
; Viet Nam
; Foraminifera
英文摘要: 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 monsoon-driven 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 monsoon-driven upwelling east of South Vietnam. Ocean upwelling is traced by reduced (UK’37-based) temperature and increased nutrient and productivity estimates of sea surface waters (δ13C 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. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938675728&doi=10.1007%2fs00531-015-1227-6&partnerID=40&md5=2534466e25328ac321b4a61849b1b2c0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70166
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Institute for Geosciences, University of Kiel, Kiel, Germany; Institute for Geology and Paleontology, University of Innsbruck, Innsbruck, Austria; Leibniz Laboratory for Radiometric Dating and Isotope Research, University of Kiel, Kiel, Germany; Department of Earth Science, University of Bergen, Bergen, Norway
Recommended Citation:
Sadatzki H.,Sarnthein M.,Andersen N.. Changes in monsoon-driven upwelling in the South China Sea over glacial Terminations I and II: a multi-proxy record[J]. International Journal of Earth Sciences,2016-01-01,105(4)