This study was carried out in the western catchment of the Behzisty Township in Gorgan, Golestan province in order to develop the regression models of soil moisture. In this study, the desired measurements were made in 18 locations using TDR during 6 running days after More
This study was carried out in the western catchment of the Behzisty Township in Gorgan, Golestan province in order to develop the regression models of soil moisture. In this study, the desired measurements were made in 18 locations using TDR during 6 running days after a relatively intense rainfall event at different depths of soil. The digital elevation model was prepared from UltraCam images taken in 2014 with the pixel size of 1×1 m in order to estimate the terrain properties. Finally, the regression model was developed with respect to these characteristics and soil moisture. The results showed that important terrain characteristics which are greatly associated with soil moisture are horizontal curvature, slope, aspect and wetness index in the regression model. These results suggest that the diversion of material flow has controlled the amount of water in the soil, slope aspect and soil moisture. The results showed that the developed regression models can forecast at least 44 to 60% of the total variations of soil moisture in the watershed scale.
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In this study, we tried to dentify the fractures and faults of Khaviz Anticline, north of Behbahan, by using the ETM+ satellite images and the Digital Elevation Model (DEM) in the ENVI 4.8 and Arc GIS software environments. Therefore, the lineaments were identified usin More
In this study, we tried to dentify the fractures and faults of Khaviz Anticline, north of Behbahan, by using the ETM+ satellite images and the Digital Elevation Model (DEM) in the ENVI 4.8 and Arc GIS software environments. Therefore, the lineaments were identified using the linear filters in different directions and the hillShade map constructed from the DEM. Subsequently, the lineaments were compared with the constructed band combinations and the geological map to separate the fractures and faults. Based on the findings, the dominant direction of the fractures and faults follow the northwest-southeast (NW-SE) trend along Khaviz Anticline. Assessment the ISODENSITY map of the faults and fractures indicates that there is the utmost accumulation of the fault and fractures is in the south limb of Khaviz Anticline, Then by considering the important role of fractures and faults in migration of hydrocarbons, the southern flank of this anticline can acts as a suitable area for accumulation of hydrocarbons
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Watershed morphometric features a huge impact on its land use, so that in addition to being somewhat rugged topography and steep river basin are defining characteristics of microclimate, based on land use type, vegetation and soil are also effective. This research is ai More
Watershed morphometric features a huge impact on its land use, so that in addition to being somewhat rugged topography and steep river basin are defining characteristics of microclimate, based on land use type, vegetation and soil are also effective. This research is aimed to investigate the relationship between land use features and morphometric parameters in Sardab and Bidsobhan watershed in the northeastern of Fars province's. Morphometric parameters such as slope, elevation, landform and vegetation index NDVI were examined in the study area. Landsat 8 satellite imagery, Landsat ETM (2015) was used to extract the vegetation index NDVI. As well as to determine the Elevation, landforms and slope of the digital elevation model (DEM) was used ASTER. After mapping the slope and elevation and landforms of the area using topographic position indicator (TPI), Each of the morphometric parameters and units relationship between land use in the study. The results showed that most of the working pile and seeding, the medium-term grazing and agriculture in Class 1, Class 10 and 9 respectively in the protected area and garden is located. While the lowest seed landforms units and protected area in Class 6, Class 2 Units pile of work and medium-term grazing and agricultural and garden plants, respectively located in Grades 4 and 9. The maximum amount of dip in units Protection Zone (45/24) and the lowest in a pile of work and seeding (375/0) . The results showed that the maximum amount of DEM per enclosure medium term (3853 m) and the lowest in a pile of work and seeding (2539 m). The maximum and minimum NDVI values at a pile of work of the unit that represents the vegetation in the study area.
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