1. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China 2. China University of Geoscience (Beijing), School of Earth Sciences and Resources, Beijing 100083, China
The Tibetan Plateau has the largest ice avalanche in China. Since the 20th Century, with global warming, more and more ice avalanches have occurred in this region, which makes serious loss of life and property of the local residents. Further researches and investigations on ice avalanches have important practical significance for preventing and reducing the disasters. On the basis of the analysis and summary of the disaster mode, the avalanches movements and influence factors, in combination with the typical characteristics of the ice avalanche in alpine valley region, the authors elaborated the definition of the ice avalanche disaster. It is considered that ice avalanche disaster should not only contain the formation of the disasters directly induced by ice avalanche but also include the chain-type disaster induced by ice avalanche. Based on the definition, the authors also divided ice avalanche disaster into three types, i.e., ice avalanche direct hazard, ice avalanche induced glacier lake outburst flood hazard and ice avalanche induced dammed lake outburst flood hazard. The authors want to establish some universal and practical classification criteria which could provide the theoretical and scientific basis for the further study about disaster prevention, mitigation and relief of ice avalanche in the Tibetan Plateau.
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2020, Vol. 32 
), 郭兆成1, 余江宽1, 范景辉1, 李丹丹2
