气候变化领域集成服务门户(CCPortal): Analysis of the temporal variations in glaciers' surface area in Alaknanda River Basin, Uttarakhand

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DOI	10.2166/wcc.2024.593
	Analysis of the temporal variations in glaciers' surface area in Alaknanda River Basin, Uttarakhand
	Nunchhani, V.; Hazarika, Sujit; Murtem, Rimum; Bandyopadhyay, Arnab; Bhadra, Aditi
发表日期	2024
ISSN	2040-2244
EISSN	2408-9354
英文摘要	This study presented a detailed analysis of glacier surface extent in the Alaknanda River basin, Western Himalaya, using Landsat series data, land surface temperature, and digital elevation model (DEM). The clean glaciers were delineated using the automatic glacier extraction index (AGEI), and the debris-covered glaciers were extracted by utilizing slope and land surface temperature. The generated map of glaciers was compared and cross-checked with Randolph Glacier Inventory (RGI v5.0) and sharp Google Earth image. The reduction in glacier surface area was observed by 367.364 sq. km from 1994 (1,150.471 sq. km) to 2015 (783.107 sq. km) at the shrinkage rate of 1.45% per annum. The shrinkage rate was higher from 2006 to 2015 (2.43% per annum) than from 1994 to 2006 (0.78% per annum). The glacier count expanded from 314 (1994) to 360 (2015) due to the fragmentation of individual glaciers. The elevation range of 5,000-5,500 m above m.s.l. hosted a maximum number of glaciers and glacial coverage. The debris-covered glaciers showed deglaciation at the rate of 0.59% per annum from 1994 to 2015. The total area occupied by glacier extent was about 25% of the total basin in the year 1994, 23% in the year 2006, and 17% in the year 2015.
英文关键词	climate change; debris-covered glaciers; glacier inventory; glacier shrinkage; Himalaya
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:001146558600001
来源期刊	JOURNAL OF WATER AND CLIMATE CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296535
作者单位	North Eastern Regional Institute of Science & Technology (NERIST)
推荐引用方式 GB/T 7714	Nunchhani, V.,Hazarika, Sujit,Murtem, Rimum,et al. Analysis of the temporal variations in glaciers' surface area in Alaknanda River Basin, Uttarakhand[J],2024.
APA	Nunchhani, V.,Hazarika, Sujit,Murtem, Rimum,Bandyopadhyay, Arnab,&Bhadra, Aditi.(2024).Analysis of the temporal variations in glaciers' surface area in Alaknanda River Basin, Uttarakhand.JOURNAL OF WATER AND CLIMATE CHANGE.
MLA	Nunchhani, V.,et al."Analysis of the temporal variations in glaciers' surface area in Alaknanda River Basin, Uttarakhand".JOURNAL OF WATER AND CLIMATE CHANGE (2024).