Scientific Quarterly Journal of Iranian Association of Engineering Geology

Scientific Quarterly Journal of Iranian Association of Engineering Geology

Landslide hazard assessment by AHP along Caspian sea coast Nowshahr-Ramsar

Document Type : Original Article

Authors
Mohammad Rasool Setayeshirad 1
Mohammad Reza Nikudel 2
Ali uromeihy 3
1 Engineering Geology Group, Faculty of Basic sciences, Tarbiat Modares University,
2 1. Engineering Geology Group, Faculty of Basic sciences, Tarbiat Modares University,
3 Engineering Geology Group, Faculty of Basic sciences, Tarbiat Modares University
Abstract
The purpose of this study is to investigate the landslide hazard in a coastal area of Caspian Sea
elongated from Nowshahr to Ramsar. High population density and lack of plains, as well as
increased constructions and architectural and agricultural activities on slopes highlight the necessity
of such studies in this area. Landslide distribution map for the area was achieved through field
studies. According to these studies, this area has a high potential for landslide incidence, and
various kinds of Mass wasting can be observed across the area.
To analyze landslide hazard in the area, we considered such factors as slope, geology, fault, river,
slope aspect, elevation, land use, access routes and shear resistance as effective factors in landslide
incidence. Data were digitalized using ArcGIS software and stored as information layers.
To develop the Landslide hazard zoning map for the area, method of AHP have been used. The map
then are classified into five hazard ranges of very low, low, moderate, high and very high.
Evaluation of zoning map with regard to landslide density and stable points shows that obtained
maps hold an acceptable validity.
Results analysis shows that slope, geology and fault are among the most important factors involved
in landslide incidence.
Developed zoning map can be practical in engineering projects architectural activities in the
investigated area.
Keywords
Zoning
Landslide
Mazandaran
Caspian Sea
AHP
Subjects
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Scientific Quarterly Journal of Iranian Association of Engineering Geology
Volume 3, Number 1 & 2
September 2010
Pages 1-14

  • Receive Date 10 October 2010
  • Revise Date 20 March 2011
  • Accept Date 27 July 2011