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Article 5 - Volume 17/1 - 2008

Paper title:

The application of GIS in Mapping Landslide Susceptibility in Măhăceni Tableland

Pages:

59 - 65

Abstract:

As a first step forward in regional hazard management, the likelihood frequency ratio model was used to produce a landslide susceptibility map in Mahaceni tableland. We constructed the essential spatial database of landslides using GIS techniques. Landslide inventory followed measurements on 73 new and partial stabilized landslides, using a Magellan Explorist 600 Gps with a 3m precision on field. Landslide data was then processed in GIS and we realized a present-day susceptibility map in Măhăceni Tableland. The map was then verified on field and the results were validated. The affecting factors such as lithology, slope angle, elevation, aspect, land use, distance to stream network, fragmentation depth and slope curvature are recognized. The relationship between the factors and the landslides were calculated using frequency ratio model. The relationships were overlaid to determine each factor’s rating for landslide susceptibility mapping. By combining each factor’s weighted values, we could realize the landslide susceptibility map for Măhăceni Tableland. Information on susceptibility map could be useful for explaining the known existing landslides, making emergency decisions and relieving the efforts on the avoidance and mitigation of future landslide hazards.

Keywords:

landslides, susceptibility, frequency ratio, GIS, Măhăceni Tableland