Geosciences Journal

The Association of Korean Geoscience Societies (한국지질과학협의회)
권호 표지

Development of GIS-based geological hazard information system and its application for landslide analysis in Korea

Lee, Sa-Ro;Choi, Uee-Chan

  • Published : 2003.09.30
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Abstract

Techniques for geological hazard management, assessment and prediction must be developed for the prevention and mitigation of geological hazards. To enable this, data sets related to geological hazard prevention related must be constructed, analyzed and distributed to customers. For this, a spatial database (SDB) including geological hazards, basic maps, damageable objects, satellite imagery, meteorological data and terrain analysis data was constructed using GIS, and to manage the SDB, a geological hazard information system (GHIS) was developed. The SDB is covering most area of South Korea and was formed at national, regional and medium scales separately in the form of index and administrative district unit. Using the GHIS, the SDB can be selected according to scale, locality and different types of data, and can be edited and manipulated. For the application of the constructed SDB, landslide hazard was analyzed for the Janghung area, Korea. Landslide susceptibility was analyzed using the landslide-occurrence factors by frequency ratio model. For the verification, the result of the analysis was applied to study areas. The verification results showed satisfactory agreement between the susceptibility map and the existing data on landslide locations.

Keywords

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