SCSIO OpenIR  > 海洋科技动态信息-印太暖池系统研究
Changes in the thermocline structure of the Indonesian outflow during Terminations I and II
Xu, J; Holbourn, A; Kuhnt, WG; Jian, ZM; Kawamura, H; jx@gpi.uni-kiel.de
2008
Source PublicationEARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
Volume273Issue:40545Pages:152-162
AbstractWe present centennial records of sea surface and upper thermocline temperatures in Core MD01-2378 from the Timor Sea, which provide new insights into the variability of the Indonesian outflow across the last two glacial terminations. Mg/Ca in Globigerinoides ruber (white s. s.) indicates an overall increase of 3.2 degrees C in sea surface temperature (SST) over Termination I. Following an early Holocene plateau at 11.3-6.4 ka, SSTs cooled by 0.6 degrees C during the middle to late Holocene (6.4-0.7 ka). The early Holocene warming occurred in phase with increasing northern hemisphere summer insolation, coinciding with northward displacement of the Intertropical Convergence Zone, enhanced boreal summer monsoon and expansion of the Indo-Pacific Warm Pool. Thermocline temperatures (Pulleniatina obliquiloculata Mg/Ca) gradually decreased from 24.5 to 21.5 degrees C since 10.3 ka, reflecting intensification of a cool thermocline throughflow. The vertical structure of the upper ocean in the Timor Sea evolved in similar fashion during the Holocene and MIS5e, although the duration of SST plateaux differed (11.3 to 6.4 ka in Termination I and from 129 to 119 ka in Termination 11), which was probably due to the more intense northern hemisphere summer insolation during MIS 5e. During both terminations, SST increased simultaneously in the southern high latitudes and the tropical eastern Indian Ocean, suggesting virtually instantaneous atmospheric climate feedbacks between the high and low latitudes. (C) 2008 Elsevier B.V. All rights reserved.
Department[Xu, Jian; Holbourn, Ann; Kuhnt, Wolfgang] Univ Kiel, Inst Geosci, D-24118 Kiel, Germany; [Jian, Zhimin] Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China; [Kawamura, Hiroshi] 21st Century COE Neosci Nat Hist, Grad Sch Sci, Div Biol, Kita Ku, Sapporo, Hokkaido 0600810, Japan
KeywordSea Surface Temperature Thermocline Temperature Indonesian Throughflow Timor Sea Terminations i Termination Ii
Subject AreaGeochemistry & Geophysics
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Indexed Bysci
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/8429
Collection海洋科技动态信息-印太暖池系统研究
Corresponding Authorjx@gpi.uni-kiel.de
Recommended Citation
GB/T 7714
Xu, J,Holbourn, A,Kuhnt, WG,et al. Changes in the thermocline structure of the Indonesian outflow during Terminations I and II[J]. EARTH AND PLANETARY SCIENCE LETTERS,2008,273(40545):152-162.
APA Xu, J,Holbourn, A,Kuhnt, WG,Jian, ZM,Kawamura, H,&jx@gpi.uni-kiel.de.(2008).Changes in the thermocline structure of the Indonesian outflow during Terminations I and II.EARTH AND PLANETARY SCIENCE LETTERS,273(40545),152-162.
MLA Xu, J,et al."Changes in the thermocline structure of the Indonesian outflow during Terminations I and II".EARTH AND PLANETARY SCIENCE LETTERS 273.40545(2008):152-162.
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