GIS 기반 확률론적 기법을 이용한 산사태 및 토석류 위험지역 분석 = Analysis of Landslide and Debris flow Hazard Area using Probabilistic Method in GIS-based

다국어 초록 (Multilingual Abstract)

In areas around Deoksan Li and Deokjeon Li Inje Eup, Inje Gun, located between 38°2 ′55″ N and 38°5′50″ N in latitude and 128°11′20″ E and 128°18′20″E in longitude, large-sized avalanche disasters occurred due to Typhoon Ewiniar in 2006. As a result, 29 people were dead of missing, along with a total of 37.25 billion won of financial loss(Gangwon Province, 2006). To evaluate such landslide and debris flow risk areas and their vulnerability, this study applied a technique called ``Weight of Evidence`` based on GIS. Especially based on the overlay analysis of aerial images before the occurrence of landslides and debris flows in 2005 and after 2006, this study extracted 475 damage-occurrence areas in a shape of point, and established a DB by using such factors as topography, hydrologic, soil and forest physiognomy through GIS. For the prediction diagram of debris flow and landslide risk areas, this study calculated W+ and W_, the weighted values of each factor of Weight Evidence, while overlaying the weighted values of factors. Besides, the diagram showed about 76% in prediction accuracy, and it was also found to have a relatively high correlationship with the areas where such natural disasters actually occurred.

참고문헌 (Reference)

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