Verification of glacial lake outburst debris flow events in Jincuo Lake of Tibet based on remote sensing image analysis

doi:10.6046/gtzyyg.2016.01.22

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Abstract

In mountainous areas of Tibet, glacial lake outburst debris flow is one of the main disasters, bringing devastating destruction to downstream settlements and infrastructures, such as roads, bridges and water facilities. Glacial lake outburst debris flow has long drawn great attention; nevertheless, because of the cold climate, steep terrain and terrible traffic condition which bring inconvenience to field investigation, very insufficient real-time literature data or some records inconsistent with the facts have been obtained for most of the glacial lake outburst events. Remote sensing images can really record the traces related to glacial lake outburst debris flow. Based on the high spatial resolution images of RapidEye and the multi-temporal images of Landsat MSS and TM, the authors analyzed the glacial lake outburst debris flow event that occurred in 1982 in Dinggye County, Tibet, which was reported by Lyu Ruren and Cheng Zunlan et al. Through remote sensing interpretation and analysis of dynamic changes of the glacial lake outburst debris flow event, the authors hold that the "Jincuo Lake outburst debris flow event" was actually induced by Yindapucuo Lake outburst. In the field investigation the authors found that Jincuo moraine was not destroyed by debris flow, and there was neither large U-type gully nor new debris flow accumulation settled in its downstream site, which confirmed the analysis of remote sensing. The results show that high resolution and multi-temporal remote sensing images can effectively improve the accuracy of investigation for geological hazards in dangerous areas.

Keywords land cover data upscaling priority semantic proximity Fuzzy kappa coefficient

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Issue Date: 27 November 2015

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	TAN Shiteng
	WANG Jicheng
	XU Zhu
	GONG Xunqiang

Cite this article:

TAN Shiteng,WANG Jicheng,XU Zhu, et al. Verification of glacial lake outburst debris flow events in Jincuo Lake of Tibet based on remote sensing image analysis[J]. REMOTE SENSING FOR LAND & RESOURCES, 2016, 28(1): 152-158.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2016.01.22 OR https://www.gtzyyg.com/EN/Y2016/V28/I1/152

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