Universal Journal of Geoscience Vol. 1(2), pp. 69 - 76
DOI: 10.13189/ujg.2013.010205
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Landslide Susceptibility Mapping for Poulrood Earth Fill Dam Reservoir (The Comparison of Two Methods) Iran, Guilan Province


Dehban Avan Stakhri Maryam*
Department of Engineering Geology, Basic Sciences Faculty, Ferdosi University of Mashhad, Iran

ABSTRACT

The purpose of this study is to produce the Landslide susceptibility zonation map for Poulrood earth fill dam reservoir with using fuzzy muti criteria decision analysis and fuzzy logic methods. To obtain the Fuzzy relations for producing the susceptibility map, a landslide inventory database is obtained by both field surveys and desk studies. To produce susceptibility map with User define and Gaussian functions then landslide related parameters such as lithology, distance from faults, distance from drainage, slope angle, slope aspect, slope curvature, distance from road, NDVI, earth quick horizontal acceleration and Precipitation were used in the landslide susceptibility analysis. The results obtained in this study showed that the frequency ratio can be used as a simple tool in assessment of landslide susceptibility when a sufficient number of data were obtained. The prediction performance of the susceptibility map is checked by considering quality sum amount (Qs). According to landslide susceptibility index for different parameters, it was found that the aspect, lithology and drainage system are the most effective parameters in the study area. With investigation get values of quality sum index(Qs), landslide density for two types of function in two methods(fuzzy logic and Fuzzy multi criteria decision analysis) and attention to good work of operator Gamma in landslide susceptibility mapping, produced map with Gaussian function and Gamma 0.7 operator (fuzzy logic method) has topmost quality.

KEYWORDS
Landslide, Poulrood, Fuzzy Multi Criteria Decision Analysis, Landslide Susceptibility Index, Fuzzy Logic

Cite this paper
Dehban Avan Stakhri Maryam . "Landslide Susceptibility Mapping for Poulrood Earth Fill Dam Reservoir (The Comparison of Two Methods) Iran, Guilan Province." Universal Journal of Geoscience 1.2 (2013) 69 - 76. doi: 10.13189/ujg.2013.010205.