气候变化领域集成服务门户(CCPortal): Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation

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DOI	10.1017/qua.2020.7
	Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation
	Xu, Xiangke; Yao, Tandong; Xu, Baiqing; Yi, Chaolu; Sun, Yong; Zeng, Xuezhen; Dong, Guocheng; Pan, Baolin
通讯作者	Xu, XK (通讯作者)
发表日期	2020
ISSN	0033-5894
EISSN	1096-0287
起始页码	129
结束页码	141
卷号	95
英文摘要	During the last glacial termination, a warming trend was generally interrupted by rapid millennium-scale cold reversals, such as the Greenland (Isotope) Stadial 1 (GS-1) and GS-2a events. To understand how glaciers on the Tibetan Plateau (TP) responded to these rapid climate events, this study constrained the timing and extent of three glacial events during the late-glacial period. Specifically, using a cosmogenic Be-10 exposure dating method, we dated three prominent glacial moraines (PM1, PM2, PM3) back to 15,850 +/- 980, 14,140 +/- 880, and 12,430 +/- 790 yr in the Pagele valley, southern TP, corresponding to GS-2a, Greenland Interstadial 1 (GI-1), and GS-1, respectively. By simulating glacial extents forced by different climate scenarios, the study constrained the temperature decreases relative to present to be 2.6 degrees C-2.9 degrees C, similar to 1.6 degrees C, and 1.4 degrees C-1.5 degrees C during the GS-2a, GI-1, and GS-1 periods in the region, with precipitation values of 60%-80%, similar to 100%, and 80%-90% of present value, respectively. Considering information from oceanic and atmospheric circulation, the study suggested that on the TP, the glacial events during the last glacial termination were well connected with the millennium-scale climate events in the North Atlantic region through the westerlies, while the Indian summer monsoon played a positive role in sustaining the glaciers under the warming climate trend.
关键词	NUCLIDE PRODUCTION-RATES INDIAN-SUMMER MONSOON CLIMATE-CHANGE EXPOSURE AGES QUATERNARY GLACIATION BE-10 MAXIMUM PRECIPITATION MOUNTAINS RECORD
英文关键词	Last glacial termination; Glacial event; Cosmogenic Be-10 dating; Millennium-scale climate events; Pagele valley
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000531662000009
来源期刊	QUATERNARY RESEARCH
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/259935
推荐引用方式 GB/T 7714	Xu, Xiangke,Yao, Tandong,Xu, Baiqing,et al. Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation[J]. 中国科学院青藏高原研究所,2020,95.
APA	Xu, Xiangke.,Yao, Tandong.,Xu, Baiqing.,Yi, Chaolu.,Sun, Yong.,...&Pan, Baolin.(2020).Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation.QUATERNARY RESEARCH,95.
MLA	Xu, Xiangke,et al."Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation".QUATERNARY RESEARCH 95(2020).