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Last glacial climate instability documented by coarse-grained sediments within the loess sequence, at Fanjiaping, Lanzhou, China

文献类型：期刊论文

作者Jiang, Hanchao1; Wang, Ping1; Thompson, Jessica2; Ding, Zhongli3; Lu, Yanchou1
刊名QUATERNARY RESEARCH
出版日期2009-07-01
卷号72期号:1页码:91-102
关键词OSL Grain size Chinese loess Millennial-scale climate oscillation Lanzhou
ISSN号0033-5894
DOI10.1016/j.yqres.2009.04.005
文献子类Article
英文摘要Optically Stimulated Luminescence dating, grain-size analysis and magnetic susceptibility measurements were conducted oil the Fanjiaping loess section, from the western Chinese Loess Plateau. The results confirm that last glacial high-frequency climatic shifts were documented in mid-latitude continental archives. The grain-size record indicated that coarse-grained sediments with horizontal bedding and channel-fill structures were only deposited in several short intervals, equivalent to the beginning of marine oxygen isotope stage (MIS) 4 and the early to middle MIS 3. This probably implies brief rainfall intensification of the Asian summer monsoon, and its disappearance since the late MIS 3 to MIS 2 may have been a response to significant glacial cooling in the Northern Hemisphere. Previous investigations revealed high sea-surface temperatures at high latitudes at the start of MIS 4, and the early to middle MIS 3 intensification of summer insolation in the Northern Hemisphere, implying evident climate amelioration. Climate improvement favors boreal forest recovery, enhancing both winter and summer air temperatures. The resultant smaller equator-polar temperature gradient probably helped the moisture-laden summer monsoon to penetrate northward. This study thus provides new significant information about the response of terrestrial loessic palaeoenvironments to millennial-timescale climatic fluctuations during the last glacial period. (C) 2009 University of Washington. Published by Elsevier Inc. All rights reserved.
WOS关键词NORTH-ATLANTIC OCEAN ; VOSTOK ICE CORE ; MAGNETIC-SUSCEPTIBILITY ; MONSOON INSTABILITY ; SIZE DISTRIBUTION ; GREENLAND ICE ; PACIFIC-OCEAN ; CENTRAL-ASIA ; RECORD ; PLATEAU
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000267231300009
出版者ACADEMIC PRESS INC ELSEVIER SCIENCE
资助机构National Natural Science Foundation of China(40472090 ; National Natural Science Foundation of China(40472090 ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; 40730208) ; 40730208) ; LED2008A07) ; LED2008A07) ; National Natural Science Foundation of China(40472090 ; National Natural Science Foundation of China(40472090 ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; 40730208) ; 40730208) ; LED2008A07) ; LED2008A07) ; National Natural Science Foundation of China(40472090 ; National Natural Science Foundation of China(40472090 ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; 40730208) ; 40730208) ; LED2008A07) ; LED2008A07) ; National Natural Science Foundation of China(40472090 ; National Natural Science Foundation of China(40472090 ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; Institute of Geology, China Earthquake Administration(IGCEA0901) ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; State Key Laboratory of Earthquake Dynamics(LED2008A02 ; 40730208) ; 40730208) ; LED2008A07) ; LED2008A07)
源URL[http://ir.iggcas.ac.cn/handle/132A11/71665]  
专题中国科学院地质与地球物理研究所
通讯作者Jiang, Hanchao
作者单位1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China
2.Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Hanchao,Wang, Ping,Thompson, Jessica,et al. Last glacial climate instability documented by coarse-grained sediments within the loess sequence, at Fanjiaping, Lanzhou, China[J]. QUATERNARY RESEARCH,2009,72(1):91-102.
APA Jiang, Hanchao,Wang, Ping,Thompson, Jessica,Ding, Zhongli,&Lu, Yanchou.(2009).Last glacial climate instability documented by coarse-grained sediments within the loess sequence, at Fanjiaping, Lanzhou, China.QUATERNARY RESEARCH,72(1),91-102.
MLA Jiang, Hanchao,et al."Last glacial climate instability documented by coarse-grained sediments within the loess sequence, at Fanjiaping, Lanzhou, China".QUATERNARY RESEARCH 72.1(2009):91-102.

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来源：地质与地球物理研究所

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