Modeling ice thickness distribution and storage volume of glaciers in Chandra Basin, western Himalayas

doi:10.1007/s11629-019-5718-y

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2020 > Vol17 No.8

	Modeling ice thickness distribution and storage volume of glaciers in Chandra Basin, western Himalayas
	Pandit, Ankur; Ramsankaran, Raaj
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:8 页码:2011-2022
关键词	Glacier ice thickness Glacier volume GlabTop2_IITB TanDEM-X DEM
ISSN号	1672-6316
DOI	10.1007/s11629-019-5718-y
文献子类	Article
英文摘要	This article reports modeled ice thickness distribution and total ice volume of the 65 selected glaciers (>0.5 km(2)) of Chandra basin, located in the Western Himalayas. This is a first-of-its-kind study that gives detailed insights about the current ice thickness distribution at an individual glacier level in the Western Himalayas. The estimates are obtained using an optimally parameterized GlabTop2_IITB [Glacier Bed Topography Indian Institute of Technology Bombay (IITB) version] model with highresolution Digital Elevation Model (DEM) as an input. The total estimated volume of all the 65 selected glaciers is about 55.32 km(3)covering a total area of about 591.03 km(2). Using hypsometric analysis, it is found that the maximum amount of ice volume, i.e., about 12.79 km(3)is currently residing at the elevation range of 5200-5400 m a.s.l. Ice thickness estimates obtained in the current study are compared with the ensemble estimates obtained in the Global Glacier Thickness Initiative (G2TI) project for three large glaciers, namely, Bada Shigri, Samudra Tapu, and Gepang Gath glaciers. The obtained results indicate that the difference between both the studies is marginal in terms of mean ice thickness and maximum ice thickness estimates except Samudra Tapu glacier. Moreover, the uncertainty of the estimated glacier ice volume from this study is about +/- 15% whereas, from the G2TI project, it is about 25%. The main reasons for the difference could be the quality of the inputs used, model structure, model parameterization as well as the time stamp of the input used. The obtained results from this study indicate that the use of appropriate shape factor and better DEM would result in more reliable glacier ice thickness estimates even by using a simple slope-dependent model like GlabTop2_IITB.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000549723200001
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/50472]
专题	Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.8
推荐引用方式 GB/T 7714	Pandit, Ankur,Ramsankaran, Raaj. Modeling ice thickness distribution and storage volume of glaciers in Chandra Basin, western Himalayas[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(8):2011-2022.
APA	Pandit, Ankur,&Ramsankaran, Raaj.(2020).Modeling ice thickness distribution and storage volume of glaciers in Chandra Basin, western Himalayas.JOURNAL OF MOUNTAIN SCIENCE,17(8),2011-2022.
MLA	Pandit, Ankur,et al."Modeling ice thickness distribution and storage volume of glaciers in Chandra Basin, western Himalayas".JOURNAL OF MOUNTAIN SCIENCE 17.8(2020):2011-2022.