DOI: 10.1016/j.quascirev.2013.03.012
Scopus记录号: 2-s2.0-84876398984
论文题名: Millennial-scale climate variability during the mid-Pleistocene transition period in the northern South China Sea
作者: Jin H. ; Jian Z.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 70 起始页码: 15
结束页码: 27
语种: 英语
英文关键词: Mg/Ca ratios
; Mid-Pleistocene transition period
; Millennial-scale climate change
; Northern SCS
; Stable isotopes
Scopus关键词: Equatorial Pacific Ocean
; Mg/ca ratios
; Mid-pleistocene climate transition
; Northern SCS
; Northern South China Sea
; Sea surface temperature (SST)
; Stable isotopes
; Transition period
; Atmospheric temperature
; Atmospheric thermodynamics
; Climate change
; Glaciers
; Housing
; Isotopes
; Sea level
; Spectrum analysis
; Stream flow
; Surface waters
; Glacial geology
; climate variation
; foraminifera
; monsoon
; Pleistocene
; sea surface salinity
; stable isotope
; water column
; Pacific Ocean
; South China Sea
; Globigerinoides ruber
; Pulleniatina obliquiloculata
; Uvigerina peregrina
英文摘要: Stable isotopes of foraminiferal multispecies (surface dwelling Globigerinoides ruber, thermocline dwelling Pulleniatina obliquiloculata, and benthic Uvigerina peregrina) and Mg/Ca ratios of G.ruber shells were analyzed with an average time resolution of ~370 yr for reconstructing the orbital- and millennial-scale changes in the East Asian monsoon and associated upper water structure during the mid-Pleistocene period of 800-1060ka at ODP Site 1144 in the northern South China Sea (SCS). It has been found that generally the sea surface temperature (SST) were lower and the depth of thermocline (DOT) was deeper during glacial stages and vice versa during interglacial stages, indicating a strengthened winter monsoon and weakened summer monsoon during glacial stages. The sea surface salinity (SSS) was relatively lower during glacials, induced by the greatly reduced distance of this site to the shore during times of low sea level. Further, spectral analyses have revealed significant semi-precessional and/or precessional cycles in the planktic δ18O, SST and the proxies of SSS and DOT, showing the typical characteristics of tropical climate change. This means that during the mid-Pleistocene climate transition (MPT) period the East Asian monsoon evolution and associated changes of upper water column structure in the northern SCS were probably driven partly by tropical forcing, like in the southern SCS, and should not be related only to the high latitude ice sheet changes. Particularly, millennial-scale climate fluctuations (mainly ~1.4 kyr cycle) were found to exist throughout the glacial and interglacial stages during the MPT period in the northern SCS, but slightly different from the sawtooth-like D/O events recorded in late Quaternary Greenland ice cores. During the mid-Pleistocene terminations, the SST warming was synchronous with the northern ice sheet retreat, indicated by benthic δ18O, in the northern SCS, which is consistent to the previous findings in the late Quaternary SCS and apparently different from that in the western equatorial Pacific Ocean, providing new insights into the studies of East Asian monsoon evolution and rapid climate change. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60631
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Marine Geology, Tongji University, Siping Road 1239, Shanghai 200092, China
Recommended Citation:
Jin H.,Jian Z.. Millennial-scale climate variability during the mid-Pleistocene transition period in the northern South China Sea[J]. Quaternary Science Reviews,2013-01-01,70