Journal Paper

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Journal: GEOSCIENCES | Year:1388 | Volume:19 | Issue:74 | Start Page:27 | End Page:32

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Title

PRIORITIZATION OF LANDSLIDE EFFECTIVE FACTORS AND IT’S HAZARD MAPPING USING INFORMATION VALUE AND AHP MODELS (CASE STUDY: A PART OF HARAZ WATERSHED)

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 Start Page 27 | End Page 32

Abstract

 Destruction and inordinate use of resources causes instability of natural slopes. Policymakers pay high attention to slopes instability investigation in order to supply zoning map to identify susceptible areas and stable location for the development of new settlements in the future. Iran especially in the north and HARAZ road is always exposed to LANDSLIDEs hazard because of climatic and physiographic conditions. In order to prepare LANDSLIDE susceptibility mapping, at first, LANDSLIDE distribution map and the map of effective factors were supplied by field study. Then prioritization of effective factors was carried out using AHP method and seven factors were selected as most effective factor. Then LANDSLIDE hazard zoning carried out using information value and AHP models. Results showed that Shemshak formation, fluvial terraces, distance of 500 meters from road, distance of 400 meters from drainage network, the west dip direction, slope of 15-50 percents, elevation of 1500-2100 meters, residential and agriculture-garden landuse have the highest LANDSLIDE susceptibility.

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