Journal article

Quantitative landslide susceptibility mapping at Pemalang area, Indonesia

Oh H, Lee S, Soedradjat G ...see all

Environmental Earth Sciences, vol. 60, issue 6 (2010) pp. 1317-1328

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For quantitative landslide susceptibility map-ping, this study applied and verified a frequency ratio, logistic regression, and artificial neural network models to Pemalang area, Indonesia, using a Geographic Information System (GIS). Landslide locations were identified in the study area from interpretation of aerial photographs, satellite imagery, and field surveys; a spatial database was constructed from topographic and geological maps. The factors that influence landslide occurrence, such as slope gradient, slope aspect, curvature of topography, and dis-tance from stream, were calculated from the topographic database. Lithology was extracted and calculated from geologic database. Using these factors, landslide suscepti-bility indexes were calculated by frequency ratio, logistic regression, and artificial neural network models. Then the landslide susceptibility maps were verified and compared with known landslide locations. The logistic regression model (accuracy 87.36%) had higher prediction accuracy than the frequency ratio (85.60%) and artificial neural network (81.70%) models. The models can be used to reduce hazards associated with landslides and to land-use planning.

Author-supplied keywords

  • Artificial neural network
  • Frequency ratio
  • GIS
  • Indonesia
  • Landslide
  • Logistic regression

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