Ecology, Environment and Conservation Paper

Vol 23, Issue 2, 2017; Page No.(908-914)

ACCURACY EVALUATION OF TERRAIN DIGITAL MODELS FOR LANDSLIDE SLOPES BASED ON AERIAL LASER SCANNING RESULTS

Anton Alexandrovich Kuzin and Stanislav Vyacheslavovich Kovshov

Abstract

The article describes basic rules for applying digital topographic maps scaled 1:2,000 and the digital terrain model (DTM) obtained after aerial laser scanning (ASL) for the purposes of zoning landslide hazardous areas. The primary line of research was to determine the sufficient density of a cloud of laser points (CLP) used to create DTMs of landslide hazardous slopes. This procedure is required to automate the DTM generation process using a cloud of ASL points without any additional monitoring of the generated model in terms of characteristic areas. In its turn, it will reduce labor efforts to create DTS of landslide hazardous areas without any detrimental impact on the quality and plausibility of the model. The studies have shown that a DTM obtained upon ALS results for the density of clouds of laser points above 4 points/100 m2 ensures the required DTM accuracy necessary to be used as a basis for regional zoning of the area by the hazard level of landslide processes.

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