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学科主题: 大气科学 ;  地球系统科学与全球变化科学
题名: Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y
作者: Yanjun Cai ;  Inez Y. Fung ;  R. Lawrence Edwards ;  Zhisheng An ;  Hai Cheng ;  Jung-Eun Lee ;  Liangcheng Tan
关键词: Indian summer monsoon ;  stalagmite ;  δ18O ;  precipitation ;  glacial–interglacial
刊名: Proceedings of the National Academy of Sciences
发表日期: 2015
卷: 112, 期:10, 页:2954–2959
收录类别: SCI
合作性质: 国际
英文摘要: 

           A speleothem δ18O record from Xiaobailong cave in southwest China characterizes changes in summer monsoon precipitation in Northeastern India, the Himalayan foothills, Bangladesh, and northern Indochina over the last 252 kyr. This record is dominated by 23-kyr precessional cycles punctuated by prominent millennial-scale oscillations that are synchronous with Heinrich events in the North Atlantic. It also shows clear glacial–interglacial variations that are consistent with marine and other terrestrial proxies but are different from the cave records in East China. Corroborated by isotope-enabled global circulation modeling, we hypothesize that this disparity reflects differing changes in atmospheric circulation and moisture trajectories associated with climate forcing as well as with associated topographic changes during glacial periods, in particular redistribution of air mass above the growing ice sheets and the exposure of the “land bridge” in the Maritime continents in the western equatorial Pacific.

WOS记录号: WOS:000350646500030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.ieecas.cn/handle/361006/2617
Appears in Collections:古环境研究室_期刊论文

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Recommended Citation:
Yanjun Cai,Inez Y. Fung,R. Lawrence Edwards,et al. Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y[J]. Proceedings of the National Academy of Sciences,2015,112(10):2954–2959.
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