ASSESSMENT METHODOLOGY FOR LANDSLIDE HAZARD IN LAND MANAGEMENT BASED ON GEOINFORMATIONAL SYSTEMS UPON GEODETIC DATA

摘要

This article presents the results of studying the possibilities of applying geoinformational systems when studying landslide processes. A method for quantitative regional forecast of landslide hazards has been given, developed by Gulakyan, Kuntsel, and Postoyev. It was used as a basis to make up an assessment algorithm for landslide hazard by applying geoinformational systems (GISes) that were successfully tested when studying landslide-hazardous slopes of the Psehako ridge (the Krasnodar territory, Russia). Primary study stages were described, such as determining landslide formation factors and their relevance, geodetic informational support of the methodology, compiling an ArcGIS database for GIS analysis, calculating primary process parameters, preparing a landslide hazard map and assessing the efficiency of the suggested algorithm. As a geodetic basis, it is suggested to use a digital terrain model developed by using aerial laser scanning data.