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Landslide analysis to estimate probability occurrence of earthquakes by software ArcGIS in central of Iran

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Author Affiliations

  • 1IslamicAzad University,Hamedan Branch, Hamedan, IRAN
  • 2 IslamicAzad University, Hamedan Branch, Hamedan, IRAN
  • 3 Geology Department, Tarbiatmodares University, Tehran, IRAN

Res. J. Recent Sci., Volume 3, Issue (5), Pages 104-109, May,2 (2014)

Abstract

Thepresent study area is located in the high mountains of zagros, where is the highest point of Iran. The region is a small part of the Iran extent, but more than 14% of rainfall volume is allocated. Due to many faults and heavily rainfall in there, the landslide surveying is very important. In this study, geological maps of the area were digitized by ARC GIS software and FISHNET pattern, which the scale of them is 1/100000. Also, the alluvial outcrops were separated from the rocky outcrops. After that these outcrops were separated based on the stratigraphic column and were weighted according to the age. Also, the Digital Elevation Model (DEM) of the area was provided by the topographic map which its scale was 1/25000. After that zoning of slope was performed, too. The slope interval is between 20° to 40°. Based on the geometric terms, the occurrence of landside is high in there. The fault map of area was extracted digitally from the geological map. According to meteorological data, rainfall precipitation statistics of the study area, precipitation zonation map was prepared. As for the slope, material, precipitation, fault data and weight composition, the induced landslide (based on the occurrence of earthquake) was zoned via FISHNET pattern.

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