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Showing 1 results for Alluvial Fan

Nezam Asgharipour Dasht Bozorg1, Mohammad Reza Servati, Siavash Shayan, Pervez Kardavani,
Volume 2, Issue 3 (4-2014)

Abstract Two-thirds of Iran located in the arid and semi-arid regions and diversity of geomorphological land forms in these areas shows Necessity of attention to the areas. One of the most important land forms are alluvial fans because of their porosity and infiltration of surface runoff and rainfall. They have many roles in recharging of aquifer. Some civilization and residential area were created in these areas by digging Qanat and Well. Additionally, over exploitation of groundwater in the arid and semi- arid regions has been caused a rapid drawdown in groundwater levels. Artificial recharge by flood spreading system is an applied method for increasing the groundwater storage and prevents the drawdown in groundwater levels. In this Study, suitable areas for flood Spreading was selected using integrated Geographic Information System(GIS) and Analytical Hierarchy process(AHP) in Abied-Sarbishe of Gotvand region. For this purpose, seven effective indices including slope, infiltration, electrical conductivity, alluvial thickness, transmisivity, drainage density and land use was selected and for each of them, a data layer prepared in GIS environment and weighted by Analytical Hierarchy process (AHP). In next step, effective indices maps were prepared using integrating GIS analytical functions and weight of each layer obtained by AHP Method. Ultimately, final map prepared in four classes from suitable until unsuitable. The results showed that, areas with high suitability for artificial recharge groundwater overlap with area of alluvial fan 58 percent, plains 22 and with area of pediment 13 percent.

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ژئوموروفولوژی کاربردی ایران Applied Geomorphology of Iran
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