Geological Prerequisites for Landslide Dams’ Disaster Assessment and Mitigation in Central Asia

摘要: Landslide dams’ hazard assessment aimed to disaster mitigation requires knowledge of the origin hazardous phenomena, its triggering factors, magnitude, spatial distribution, recurrence, as well characteristics their possible secondary and tertiary effects. These hazards identification quantification can be derived from detail geological geomorphic study present past river-damming landslides related phenomena such evidence outburst floods. Several historical catastrophes that occurred in Central Asian region due formation and/or breach landslide dams are described briefly case studies demonstrating various manifestations damming Asia discussed with special emphasis on those topics, which still remain unsolved or controversial. are: (1) versus moraine interpretation Pamirs’ natural blockages origin, (2) relationship between large-scale bedrock seismicity, is critically important for both seismic assessment, (3) morphological structural peculiarities landslides—the main type river-blocking slope failures predetermine magnitude river damming, longevity character rate breach. The importance detailed breached dams, analogues existing future conclusive remarks.