气候变化领域集成服务门户(CCPortal): Glacial Lakes in the Nepal Himalaya: Inventory and Decadal Dynamics (1977-2017)

CCPortal

DOI	10.3390/rs10121913
	Glacial Lakes in the Nepal Himalaya: Inventory and Decadal Dynamics (1977-2017)
	Khadka, Nitesh; Zhang, Guoqing; Thakuri, Sudeep
通讯作者	Zhang, GQ (通讯作者)
发表日期	2018
EISSN	2072-4292
卷号	10 期号:12
英文摘要	Himalayan glaciers, in general, are shrinking and glacial lakes are evolving and growing rapidly in number and size as a result of climate change. This study presents the latest remote sensing-based inventory (2017) of glacial lakes (size >= 0.0036 km(2)) across the Nepal Himalaya using optical satellite data. Furthermore, this study traces the decadal glacial lake dynamics from 1977 to 2017 in the Nepal Himalaya. The decadal mapping of glacial lakes (both glacial-fed and nonglacial-fed) across the Nepal Himalaya reveals an increase in the number and area of lakes from 1977 to 2017, with 606 (55.53 +/- 16.52 km(2)), 1137 (64.56 +/- 11.64 km(2)), 1228 (68.87 +/- 12.18 km(2)), 1489 (74.2 +/- 14.22 km(2)), and 1541 (80.95 +/- 15.25 km(2)) glacial lakes being mapped in 1977, 1987, 1997, 2007, and 2017, respectively. Glacial lakes show heterogeneous rates of expansion in different river basins and elevation zones of Nepal, with apparent decadal emergences and disappearances. Overall, the glacial lakes exhibited similar to 25% expansion of surface areas from 1987 to 2017. For the period from 1987 to 2017, proglacial lakes with ice contact, among others, exhibited the highest incremental changes in terms of number (181%) and surface area (82%). The continuous amplified mass loss of glaciers, as reported in Central Himalaya, is expected to accompany glacial lake expansion in the future, increasing the risk of glacial lake outburst floods (GLOFs). We emphasize that the rapidly increasing glacial lakes in the Nepal Himalaya can pose potential GLOF threats to downstream population and infrastructure.
关键词	MOUNT EVEREST REGION DIFFERENCE WATER INDEX OUTBURST FLOOD RISK TIBETAN PLATEAU SUPRAGLACIAL PONDS RAPID EXPANSION CLIMATE-CHANGE KOSHI BASIN RIVER-BASIN PRECIPITATION
英文关键词	Landsat imagery; lake mapping; glacial lake inventory; GLOFs; climate change; Himalaya
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000455637600055
来源期刊	REMOTE SENSING
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/259183
推荐引用方式 GB/T 7714	Khadka, Nitesh,Zhang, Guoqing,Thakuri, Sudeep. Glacial Lakes in the Nepal Himalaya: Inventory and Decadal Dynamics (1977-2017)[J]. 中国科学院青藏高原研究所,2018,10(12).
APA	Khadka, Nitesh,Zhang, Guoqing,&Thakuri, Sudeep.(2018).Glacial Lakes in the Nepal Himalaya: Inventory and Decadal Dynamics (1977-2017).REMOTE SENSING,10(12).
MLA	Khadka, Nitesh,et al."Glacial Lakes in the Nepal Himalaya: Inventory and Decadal Dynamics (1977-2017)".REMOTE SENSING 10.12(2018).