correct estimates of the risk of erosion at improve land management advice plays an important role. in this study, erosion risk zoning in the kan basin with area about 20571 ha in the northwest of tehran by using the experimental model mpsiac and geographic information system (gis) were investigated and by using the base maps and gis, layers of information were prepared. after collecting, prepa...

this study aimed to determine the prone areas for sugar beet planting with regards to their major effective factors. climatic data of 1998-2009 period were obtained from the local stations of khorasan razavi meteorological bureau. the topographic data including altitude, slope, slope direction, and tin layers were extracted from 1:250000 topographic maps of cartographic organization, iran. the ...

the high hillsides of the tehran metropolis are prone to landslides due to the climatic conditions and the geological, geomorphologicalcharacteristics of the region. therefore, it is vitally important that a landslide susceptibility map of the region be prepared. for thispurpose, thematic layers including landslide inventory, lithology, slope, aspect, curvature, distance to stream, distance to ...

â â â  the study area is located in the wes of iran, the southwest part of “bisetoon” mountain, and kermanshah city. it covers an area of ~1489 km2 . landslide have been the most common natural phenomenon in the area, which usually is triggered by heavy rainfall and seismic activities. although there are few active landslides in the area, but they are serious threats for population and infr...

This paper presents the results of a series of small-scale model tests and numerical analyses conducted on circular and ring model footings located near geogrid reinforced sand slopes. Layers of geogrid were used as reinforcement. For numerical analyses Finite Element Method (FEM) was used. The effects of reinforcement depth, size, number of layers, and the horizontal distance between reinforce...