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Source publication
Landslide phenomenon is one of the most destructively engineering geological disasters in
hilly regions which are responsible for signicant social-economic damages. Due to
lithological and geomorphological features as well as active tectonics, Balarud region is
prone to landslide disaster so that 55 landslides record in the area. This study presen...
Context in source publication
Context 1
... initial stage of a landslide hazard assessment is the gathering of accessible information and data associated with the study area. For this purpose, seven layers of factors that influence landslides in susceptibility mapping were prepared, including altitude, slope angle, aspect, proximity to drainage network, lithology, proximity to faults and lineaments, as well as proximity to the roads. These layers were acquired from topographical maps, geological maps, satellite images, and field work study. The layers of slope, aspect and altitude were derived directly in the raster format from the produced digital elevation model (DEM). Afterwards, landslide influencing data layers were drowning using Arc GIS 10.3 software and classified into several classes (Fig. 2, 3, 4, 5, 6, and 7). Then, analytic hierarchy process (AHP) was applied so as to determine the relative weights of each landslide instability factor using Expert Choice 11 software. In the next step, the landslide susceptibility map of the Balarud region was delineated using weight exertion of parameters in their layers and merging them by Arc GIS software. Eventually, the landslide susceptibility zonation map was verified with landslide inventory map of this ...
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The representation of terrain propensity to generate landslides, meaning the mapping of landslide susceptibility, represents a first step in the assessment of the risk induced by these geomorphological hazards. Results of the numerous studies differ according to the available input data, the applied methodology, the level of detail or the scale of...
Citations
Identifying and classifying areas prone to geohazards is an important step in assessing environmental hazards and plays an undeniable role in optimal management of hazards. Investigating the factors affecting the level of risk of a region and the zoning of hazards can greatly help to predict and reduce the damage to this event. In this research, using an Analysis Hierarchical Process (AHP) method, the factors influencing the geologic danger of the region of Balarud that are affected by the fault zone of Balarud in northern Khouzestan include: earthquakes, structural factors such as faults and fractures, anticline, landslide, slope, lithology, as well as drainage network (rivers and stream). These layers of information are weighted using expert opinion tailored to their effect on the Export Choice software and overlap with the application of the weight of the layers in the GIS environment. Finally, a map of geohazard zonation is developed to identify and assess areas with potential geohazard in the area.
