Proceedings of the Korean Association of Geographic Inforamtion Studies Conference (한국GIS학회:학술대회논문집)
- 2003.04a
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- Pages.65-70
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- 2003
Application of a weight-of-evidence model to landslide susceptibility analysis Boeun, Korea
- Moung-Jin, Lee (Department of Earth System Sciences, Yonsei University) ;
- Yu, Young-Tae (Department of Computer Engineering, Hannam University)
- Published : 2003.04.01
Abstract
The weight-of-evidence model one of the Bayesian probability model was applied to the task of evaluating landslide susceptibility using GIS. Using the location of the landslides and spatial database such as topography, soil, forest, geology, land use and lineament, the weight-of-evidence model was applied to calculate each factor's rating at Boun area in Korea where suffered substantial landslide damage fellowing heavy rain in 1998, The factors are slope, aspect and curvature from the topographic database, soil texture, soil material, soil drainage, soil effective thickness, and topographic type from the soil database, forest type, timber diameter, timber age and forest density from the forest map, lithology from the geological database, land use from Landsat TM satellite image and lineament from IRS satellite image. Tests of conditional independence were performed for the selection of the factors, allowing the 43 combinations of factors to be analyzed. For the analysis, the contrast value, W
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