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Landslide Hazard Mapping Using Probabilistic Approaches: A case study of Penang Island, Malaysia


Landslide is one of the destructive natural geohazards in Malaysia. Landslide hazard map is a very useful for urban development planning. This paper presents landslide hazard mapping using probabilistic approaches. Probabilistic methods of Frequency Ratio (FR) and Landslide Nominal Susceptibility Factor (LNSF) were implemented in the Penang Island to produce landslide hazard maps. The landslide causative factors considered are elevation, slope gradient, slope aspect, curvature, land cover, vegetation cover, distance from road, distance from stream, distance from fault line, geology, soil texture and precipitation. Landslide hazard maps were assessed using ROC (Rate of Curve) method. Accuracy obtained for FR and LNSF are 79.2% and 74.0% respectively.

Key words

Landslide, susceptibility, geohazard, hazard map, probabilistic

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