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A platform for research: civil engineering, architecture and urbanism
Delineation of Slope Profiles from Digital Elevation Models for Landslide Hazard Analysis
Landslides can be one of the most damaging geohazards related to earthquakes. Production of a landslide susceptibility map for a regional hazard analysis requires selection of appropriate slope mapping units. Traditionally, a one dimensional grid based approach has been used in conjunction with the infinite slope model and Newmark's method to assess the regional slope performance under earthquake loading. However, with the advent of soft computing and metamodeling techniques, relatively accurate predictions of two dimensional slope responses can be calculated for a vast number of different slope profiles with different material properties and earthquake motions. Therefore, there is a need for a customized GIS application for delineation of slope profiles from a Digital Elevation Model (DEM) to be used in landslide hazard mapping. In this paper, a hydrologic model tool that uses the principles of delineating watersheds from DEM is adopted to allow for the extraction of slope profiles. Two alternative implementation approaches are presented.
Delineation of Slope Profiles from Digital Elevation Models for Landslide Hazard Analysis
Landslides can be one of the most damaging geohazards related to earthquakes. Production of a landslide susceptibility map for a regional hazard analysis requires selection of appropriate slope mapping units. Traditionally, a one dimensional grid based approach has been used in conjunction with the infinite slope model and Newmark's method to assess the regional slope performance under earthquake loading. However, with the advent of soft computing and metamodeling techniques, relatively accurate predictions of two dimensional slope responses can be calculated for a vast number of different slope profiles with different material properties and earthquake motions. Therefore, there is a need for a customized GIS application for delineation of slope profiles from a Digital Elevation Model (DEM) to be used in landslide hazard mapping. In this paper, a hydrologic model tool that uses the principles of delineating watersheds from DEM is adopted to allow for the extraction of slope profiles. Two alternative implementation approaches are presented.
Delineation of Slope Profiles from Digital Elevation Models for Landslide Hazard Analysis
Turel, Mesut (author) / Frost, J. David (author)
Georisk 2011 ; 2011 ; Atlanta, Georgia, United States
GeoRisk 2011 ; 829-836
2011-06-21
Conference paper
Electronic Resource
English
Delineation of Slope Profiles from Digital Elevation Models for Landslide Hazard Analysis
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