气候变化领域集成服务门户(CCPortal): Major changes in East Asian climate in the mid-Pliocene: Triggered by the uplift of the Tibetan Plateau or global cooling?

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DOI	10.1016/j.jseaes.2012.10.009
	Major changes in East Asian climate in the mid-Pliocene: Triggered by the uplift of the Tibetan Plateau or global cooling?
	Ge, Junyi; Dai, Ying; Zhang, Zhongshi; Zhao, Deai; Li, Qin; Zhang, Yan; Yi, Liang; Wu, Haibin; Oldfield, Frank; Guo, Zhengtang
通讯作者	Ge, JY (通讯作者)
发表日期	2013
ISSN	1367-9120
EISSN	1878-5786
起始页码	48
结束页码	59
卷号	69
英文摘要	Since the mid-Pliocene, East Asian climates have experienced significant changes. One view suggests that significant uplift of the Tibetan Plateau during this period could have been responsible for these dramatic changes in the strength of the East Asian monsoon and for Asian interior acidification, while some other authors attribute these changes to the ongoing global cooling and rapid growth of the Arctic ice-sheet. Up to the present, which factor dominates the major changes of East Asian climate in the mid-Pliocene is still a contentious issue. This study presents an analysis of several climate proxies including grain-size, (CaO* + Na2O + MgO)/TiO2 ratio, Na/Ka ratio and dust accumulation rates of the Xifeng Red Clay sequence in the eastern Chinese Loess Plateau and the Xihe Pliocene loess-soil sequence in West Qinling. They reveal that aridity in the continental interior and winter monsoon circulation both intensified, whereas the East Asian summer monsoon showed a weakening rather than intensifying trend since the mid-Pliocene. These changes are also supported by the other multi-proxy records from various regions in East Asia. Previous numerical modeling studies have demonstrated that uplift of the Tibetan Plateau would have simultaneously enhanced continental-scale summer and winter monsoon strength as well as central Asian aridity. The mid-Pliocene climate changes in East Asia are therefore unlikely to be a response to Plateau uplift. On the contrary, our recent modeling results give support to the view that ongoing cooling could have intensified both the aridity of the interior and the strength of the winter monsoon, but weakened the summer monsoon in East Asia. (c) 2012 Elsevier Ltd. All rights reserved.
关键词	CHINESE LOESS PLATEAU MAGNETIC-SUSCEPTIBILITY SIGNAL CHEMICAL-WEATHERING HISTORY STABLE-ISOTOPE EVIDENCE RED-EARTH FORMATION PAST 8 MA LATE MIOCENE EOLIAN DEPOSITS SUMMER MONSOONS VEGETATION EVOLUTION
英文关键词	Mid-Pliocene; East Asian monsoon; Tibetan Plateau; Global cooling
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000319635400006
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258207
推荐引用方式 GB/T 7714	Ge, Junyi,Dai, Ying,Zhang, Zhongshi,et al. Major changes in East Asian climate in the mid-Pliocene: Triggered by the uplift of the Tibetan Plateau or global cooling?[J]. 中国科学院青藏高原研究所,2013,69.
APA	Ge, Junyi.,Dai, Ying.,Zhang, Zhongshi.,Zhao, Deai.,Li, Qin.,...&Guo, Zhengtang.(2013).Major changes in East Asian climate in the mid-Pliocene: Triggered by the uplift of the Tibetan Plateau or global cooling?.JOURNAL OF ASIAN EARTH SCIENCES,69.
MLA	Ge, Junyi,et al."Major changes in East Asian climate in the mid-Pliocene: Triggered by the uplift of the Tibetan Plateau or global cooling?".JOURNAL OF ASIAN EARTH SCIENCES 69(2013).