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DOI	10.1016/j.geomorph.2020.107391
	Palaeoglacial and palaeoenvironmental conditions of the Gangdise Mountains, southern Tibetan Plateau, as revealed by an ice-free cirque morphology analysis
	Zhang, Qian; Fu, Ping; Yi, Chaolu; Wang, Ninglian; Wang, Yetang; Capolongo, Domenico; Zech, Roland
通讯作者	Zhang, Q (通讯作者)
发表日期	2020
ISSN	0169-555X
EISSN	1872-695X
卷号	370
英文摘要	Cirque morphology can be used to indicate patterns of palaeoglaciations and palaeoclimate. Many cirque morphological analyses have been conducted worldwide, but only a few studies focus on the Tibetan Plateau (TP). In this study, we mapped 1652 ice-free cirques in the western, central, and eastern sectors of the Gangdise Mountains, southern TP. We calculated the cirque size, shape, and topography, and categorized them into fifteen lithological units to study their morphological parameters. Results show that cirque size decreases from west to east, implying that the western sector frequently developed cirque-type glaciers or was eroded by dynamic glaciers during the initial period of cirque development. Bedrock type can also explain the difference in cirque size in the three sectors, as the dominating bedrocks of the cirques in the western sector are relatively 'soft'. The relatively small L/W ratios for the cirques in the western sector implies the important effect of widening on cirque planar enlargement in this sector. The decreasing trend of L/H and W/H ratios and the increasing trend of A(3D)/A(2D) ratios from west to east imply the importance of deepening for the cirques in the eastern sector. Moreover, the different bedrock types may be attributed to the different cirque shapes. The NE-facing bias for the cirques reveals the impact of solar radiation. This implies that the Gangdise Mountains were characterized by a relatively low cloudiness during the ablation season. The E bias for the cirques in the eastern sector reveals that the Indian Summer Monsoon was not strong. (C) 2020 Elsevier B.V. All rights reserved.
关键词	GLACIAL CIRQUES MORPHOMETRIC-ANALYSIS SPATIAL-DISTRIBUTION FORM AREA AGE DIRECTIONS ALLOMETRY ALTITUDE JAGGANG
英文关键词	Cirque morphology; Glaciation; Palaeoenvironment; Gangdise Mountains
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000589917200004
来源期刊	GEOMORPHOLOGY
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/260041
推荐引用方式 GB/T 7714	Zhang, Qian,Fu, Ping,Yi, Chaolu,et al. Palaeoglacial and palaeoenvironmental conditions of the Gangdise Mountains, southern Tibetan Plateau, as revealed by an ice-free cirque morphology analysis[J]. 中国科学院青藏高原研究所,2020,370.
APA	Zhang, Qian.,Fu, Ping.,Yi, Chaolu.,Wang, Ninglian.,Wang, Yetang.,...&Zech, Roland.(2020).Palaeoglacial and palaeoenvironmental conditions of the Gangdise Mountains, southern Tibetan Plateau, as revealed by an ice-free cirque morphology analysis.GEOMORPHOLOGY,370.
MLA	Zhang, Qian,et al."Palaeoglacial and palaeoenvironmental conditions of the Gangdise Mountains, southern Tibetan Plateau, as revealed by an ice-free cirque morphology analysis".GEOMORPHOLOGY 370(2020).