Publication Date : 2010-08-02
Author : Intarawichian, N.Dasananda, S.
Countries : Thailand
Disaster Management Theme :
Disaster Type : Landslide
Document Type : Research Paper
Languange : en
Link : http://ird.sut.ac.th/e-journal/document/contents/Journal17(3)/Vol.17%20No.3%20Part6.pdf
Abstact :
Landslide hazard results in great loss of life and property. These damages can be mitigated if the cause and effect relationships of the events are known. In this study, we used analytical hierarchy process (AHP) and weighted linear combination (WLC) methods to produce landslide susceptibility map of the lower Mae Chaem Watershed in the north of Thailand. The study was carried out using remote sensing data, field surveys and geographic information system (GIS) tools. The ten factors that influence landslide occurrence, such as elevation, slope aspect, slope angle, distance from drainage, lithology, distance from lineament, soil texture, precipitation, land use/land cover (LULC) and NDVI were considered. The landslide susceptibility index (LSI) was calculated using the WLC technique based on the assigned weight and rating given by the AHP method. The result of analysis was verified using existing landslide locations where the accuracy rate of 64.90% was accomplished. The obtained landslide susceptibility map is useful for landslide hazard prevention and mitigation, and proper planning for land use and construction in the future.