气候变化领域集成服务门户(CCPortal): Unchanged frequency of moraine-dammed glacial lake outburst floods in the Himalaya

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DOI	10.1038/s41558-019-0437-5
	Unchanged frequency of moraine-dammed glacial lake outburst floods in the Himalaya
	Veh G.; Korup O.; von Specht S.; Roessner S.; Walz A.
发表日期	2019
ISSN	1758678X
卷号	9 期号:5
英文摘要	Shrinking glaciers in the Hindu Kush–Karakoram–Himalaya–Nyainqentanglha (HKKHN) region have formed several thousand moraine-dammed glacial lakes 1–3 , some of these having grown rapidly in past decades 3,4 . This growth may promote more frequent and potentially destructive glacial lake outburst floods (GLOFs) 5–7 . Testing this hypothesis, however, is confounded by incomplete databases of the few reliable, though selective, case studies. Here we present a consistent Himalayan GLOF inventory derived automatically from all available Landsat imagery since the late 1980s. We more than double the known GLOF count and identify the southern Himalayas as a hotspot region, compared to the more rarely affected Hindu Kush–Karakoram ranges. Nevertheless, the average annual frequency of 1.3 GLOFs has no credible posterior trend despite reported increases in glacial lake areas in most of the HKKHN 3,8 , so that GLOF activity per unit lake area has decreased since the late 1980s. We conclude that learning more about the frequency and magnitude of outburst triggers, rather than focusing solely on rapidly growing glacial lakes, might improve the appraisal of GLOF hazards. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124414
作者单位	Institute of Environmental Science and Geography, University of Potsdam, Potsdam, Germany; Institute of Geosciences, University of Potsdam, Potsdam, Germany; Section Seismic Hazard and Risk Dynamics, GFZ German Research Centre for Geosciences, Potsdam, Germany; Section Remote Sensing and Geoinformatics, GFZ German Research Centre for Geosciences, Potsdam, Germany
推荐引用方式 GB/T 7714	Veh G.,Korup O.,von Specht S.,et al. Unchanged frequency of moraine-dammed glacial lake outburst floods in the Himalaya[J],2019,9(5).
APA	Veh G.,Korup O.,von Specht S.,Roessner S.,&Walz A..(2019).Unchanged frequency of moraine-dammed glacial lake outburst floods in the Himalaya.Nature Climate Change,9(5).
MLA	Veh G.,et al."Unchanged frequency of moraine-dammed glacial lake outburst floods in the Himalaya".Nature Climate Change 9.5(2019).