期刊
ENVIRONMENTAL EARTH SCIENCES
卷 64, 期 2, 页码 395-409出版社
SPRINGER
DOI: 10.1007/s12665-010-0864-0
关键词
Landslide susceptibility; Frequency ratio; GIS; Cross-application; Korea
资金
- Ministry of Knowledge and Economy of Korea
- National Research Council of Science & Technology (NST), Republic of Korea [11-3112] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A study of landslides in Youngin, Janghung and Boeun, Korea, using the geographic information system (GIS) validates a spatial probabilistic model for landslide susceptibility analysis. Locations were identified from aerial photographs, satellite images and field surveys. Topography, soil-type, forest-cover and land-cover maps were constructed from spatial data sets. Landslide occurrence is influenced by 13 factors, evidence for which was extracted from the database with the frequency ratio of each factor computed. Landslide susceptibility maps use frequency ratios derived not only from data for each area but also ratios, one from the probabilistic model, calculated from the other two areas (nine maps in all) as a cross-check of method validity. For validation, analytical results were compared in each study area with actual landslide locations: Boeun based on its frequency ratio showed the best accuracy (82.49%) whereas Janghung based on the Boeun frequency ratio showed the worst (69.53%).
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