Landslide Hazard Mapping Using GIS and Remote Sensing Techniques: The Case of Jima Geneti Woreda, Horo Guduru Wollega Zone, Ethiopia
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Date
2019-10
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Addis Ababa University
Abstract
The main purpose of this study is to assess landslide hazard zones for Jima Geneti Woreda using
Geographic Information system (GIS) and remote sensing by applying multi criterial analysis. The
causative factors considered to landslide analysis in the area was, slope, aspect, drainage density,
lineament density, geology, land use land cover and soil type. The thematic data layer representing
various factors were, generated by using GIS and remote sensing techniques. Using Analytical
Hierarchy Processes the weight of each factor were calculated and assigned in GIS. To add these
factors and produce landslide hazard map weighted linear combination was, used. Landslide
hazard map prepared was, categorized in to very high, high, low and very low hazard zone. The
result of analysis were verified using landslide inventory data. The result showed that the landslide
hazard map agreed with areas that had recently experienced landslide and using this mode was
very suitable in predicting landslide hazard and generating landslide hazard maps. The landslide
hazard map shown that southwestern region of study area was prone to landslide. The correlation
between landslide occurrence and causative factors was, correlated to examine their relationship.
Based on landslide hazard zone various mitigation measure was, taken for stabilization of unstable
slope. The present study determine that multi criterial analysis with GIS is a powerful tool in
predicting landslide hazard mapping in the area. The future landslide hazard analysis and
landslide intervention in Jima Geneti Woreda suggested for further researcher, land management
and concerned body should have based on the present finding
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Keywords
Landslide, Jima Geneti Woreda, GIS and remote sensing, multi-criteria analysis