Publication

Landslide Hazard Assessment Using Analytic Hierarchy Processing (AHP) and Geographic Information System in Kaligesing Mountain Area of Central Java Province Indonesia


Publication Date : 2010-01-01
Author : Bachri, SyamsulRajendra P. Shresta
Countries :
Disaster Management Theme :
Disaster Type : Landslide
Document Type : Research Paper
Languange : en
Link : http://www.academia.edu/14705973/Landslide_hazard_assessment_using_analytic_hierarchy_processing_AHP_and_geographic_information_system_in_Kaligesing_mountain_area_of_Central_Java_Province_Indonesia

Abstact :

Landslide is type of natural disaster which may cause huge losses of live and properties. Many landslides triggering factors found in Kaligesing make this zone as landslide prone area in Indonesia. Zoning hazard area was a solution to assess landslide disaster since there is still a great danger of further landslides in the region and also it is strongly linked with spatial issues. The combination of GIS and Analytic Hierarchy Process (AHP) are used to create landslide hazard zone in this study. Factors, such as landform, land utilization, slope steepness, soil texture and lithology are considered for use in AHP through pair-wise matrix. The output of calculation was validated with present landslide location. Based on the judgment matrix and calculation, the result showed ë max = 5.406256, the feature vector of normalization: F= 0.4042, 0.2746, 0.2018, 0.0845, 0.0349). In this calculation, RI =1.12. According to relational formula, CI=0.101564. A consistency ratio (CR) was computed to verify that the consistency of matrix. CR value of 0.090682, meant that the pair-wise matrix is consistent (threshold CR<0.10) and can be used for assigning the criteria weight. Spatial distribution of the susceptibility classes of landslide in Kaligesing showed that more than 40% of the study area was categorized as landslide prone area with moderate susceptibility and 30.05% falling on high susceptibility class, while the rest 20.78% was categorized as less susceptibility class.