气候变化领域集成服务门户(CCPortal): Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications

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DOI	10.1111/bor.12422
	Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications
	Xu, Xiangke; Yao, Tandong; Xu, Baiqing; Zhang, Lianqing; Sun, Yong; Pan, Baolin
通讯作者	Xu, XK (通讯作者)
发表日期	2020
ISSN	0300-9483
EISSN	1502-3885
起始页码	286
结束页码	295
卷号	49 期号:2
英文摘要	A well-preserved Last Glacial Maximum (LGM) moraine set in the Quemuqu Valley on the eastern slope of the Qiongmu Gangri Peak offers great potential for reconstructing LGM glacier extent and examining LGM climate in the region. This study employed a coupled and physics-based mass balance and ice-flow model to investigate glacier sensitivities to climate in the valley. Based on the sensitivity tests and the well-preserved LGM moraines, the study also reconstructed the LGM glacier extent in the valley and assessed the magnitude of cooling for the LGM period. Model results suggest that the Quemuqu Valley sustained an ice volume of 6.80 +/- 0.16 km(3) in the LGM period. Temperature depression of 3.1-4.3 degrees C, combined with 30-70% modern precipitation, is likely to have supported the LGM glacier extent in the valley. The temperature inference for the LGM period is comparable with other independent palaeoclimate evidence in the region. However, there is a large difference in the reconstructed glacier volume (ice thickness) between previous research and the current study. The glacier model used here directly calculates the ice thickness and needs relatively less field evidence to constrain the model simulations. It is therefore advocated to use such a model to reconstruct past glaciers and their corresponding climates for other valleys of the Tibetan Plateau.
关键词	UINTA MOUNTAINS ENERGY-BALANCE RECONSTRUCTION SENSITIVITY VARIABILITY MONSOON SIERRA SLOPE SHAN
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000502702400001
来源期刊	BOREAS
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/259819
推荐引用方式 GB/T 7714	Xu, Xiangke,Yao, Tandong,Xu, Baiqing,et al. Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications[J]. 中国科学院青藏高原研究所,2020,49(2).
APA	Xu, Xiangke,Yao, Tandong,Xu, Baiqing,Zhang, Lianqing,Sun, Yong,&Pan, Baolin.(2020).Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications.BOREAS,49(2).
MLA	Xu, Xiangke,et al."Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications".BOREAS 49.2(2020).