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Articles by K. Solaimani
Total Records ( 8 ) for K. Solaimani
  H. Mojaddadi , M. Habibnejad , K. Solaimani , M. Z. Ahmadi and M. A. Hadian-Amri
  This research has been carried out for investigation and comparison of the amount of precision and correctness of SCS unit hydrograph, GRAY, G.I.U.H and Gc.I.U.H models in determination of the shape and dimensions of outlet runoff hydrograph in Navroud watershed with 266 km2 area, located in Giulan Province of Iran and use of these models for the similar watersheds and without any data. To investigate the amount of efficiency of above-mentioned methods, first 6 equivalent rainfall-runoff events were selected and for each, hydrograph of outlet runoff were calculated. Then the models were compared with together, for peak time, base time, peak flow and volume of outlet runoff and the most efficient model in estimation of hydrograph of outlet flow for similar regions was proposed. Comparison of calculated hydrographs obtained from models under research and observed hydrographs of selected events showed that SCS unit hydrograph method had the most direct agreement in three parameters of peak time, base time and volume of direct runoff. On the other hand, the geomorphoclimatic instantaneous unit hydrograph, with the highest mean relative error of 16%, had highest harmony in estimation of peak flow direct runoff.
  K. Solaimani and S. Sadeghi
  The aim of this study is to investigate the detection using hydrometric data and GIS technique for the central part of Iran because of the water shortage for agricultural and industrial activities. In many parts of Iran, the pressure of agricultural development is causing a surface-water scarcity. That means groundwater resources recharge will be effected for this reason which caused a major problems in future. The study area of Mayghan is located in Central Iran with 2854.63 km2 as a part of Arak plain and near to 110 km2 as a playa. Before 1951, there was no evidence of deep well in this area and the related activities were depended on the low stream rivers, aqueducts and wells. According to the hydrometric records of the regional water organization 3161 wells added to the injection wells, between 1970 and 2004. The qualitative increasing of these wells can be calculated as annually growth of 94 for the study area which are totally pumping about 531.5/million/m3 with annual increasing of 15.63/million/m3. The growth of annual demands for water supply has caused some environmental problems since there was no sufficient water intrusion to the aquifer plain which causes constantly the height of ground water reservoir declination as shown in related graphs. In this study, groundwater data were analysed using ArcGIS, statistical methods, geographic information techniques of Arc view and Ilwis.
  K. Solaimani , A. Abkar , M. Habibnejad and M.Z. Ahmadi
  Drawing isohyets maps is one of the main steps in preparation of depth-area-duration (DAD) curves. To draw these maps different methods are used such as using rainfall gradient, simple classic statistical methods and complicated Geostatistical methods like Krigging method. For this purpose, after collection of data and information related to 59 rainfall gauging stations in the study area, The dominant and maximum rainfall for durations of one to three days were selected. Then for drawing the isohyets maps, the relationship between rainfall and the elevation were investigated, but due to insignificant difference of this relationship, two methods of Geostatistical Krigging and inverse distance with powers of 1 to 3, were evaluated to draw the isohyets maps and determination of the average rainfall. To evaluate the above two methods, Mean Absolute Error (MAE) was used in this research. The results of this evaluation showed that the Krigging method is better than inverse distance method for determination of average rainfall of the region. Then, by using krigging method, the isohyets maps of one to three -day duration and DAD curves were drawn. By using this method, conversion of point rainfall to average rainfall for an area of up to 20000 km2 of the area under study is possible. Also, the investigation of the curves shows that the ratio of the amount of rainfall at the center to the amount of rainfall at an area of 20000 km2 is 1.98, .74 and 1.48 for durations of 1, and 3- day, respectively.
  K. Solaimani and M.A. Hadian Amri
  The aim of this study was capability of Indian Remote Sensing (IRS) data of 1D to detecting erosion features which were created from run-off. In this study, ability of PAN digital data of IRS-1D satellite was evaluated for extraction of erosion features in Nour-roud catchment located in Mazandaran province, Iran, using GIS techniques. Research method has based on supervised digital classification, using MLC algorithm and also visual interpretation, using PMU analysis and then these were evaluated and compared. Results indicated that opposite of digital classification, with overall accuracy 40.02% and kappa coefficient 31.35%, due to low spectral resolution; visual interpretation and classification, due to high spatial resolution (5.8 m), prepared classifying erosion features from this data, so that these features corresponded with the lithology, slope and hydrograph lines using GIS, so closely that one can consider their boundaries overlapped. Also field control showed that this data is relatively fit for using this method in investigation of erosion features and specially, can be applied to identify large erosion features.
  K. Solaimani , E. Omidvar and A. Kelarestaghi
  This research is focused on morphologic changes of channels resulted from establishing check dam construction in Chehel cheshme watershed located at Fars Province. In this study, five channels with check dams were selected through the study area. Then some morphologic parameters of channels such as width/depth ratio, the maximum depth and cross section area along the channel on which check dam were constructed had been measured. These measurements were made on 6 cross section areas in 10, 50 and 90% distances from check dams at upstream and downstream. The above mentioned parameters were calculated using calculating and graphic soft wares. Then, some analytical methods were used to estimate and compare the average digital numbers of calculated parameters through different channels. The results showed that check dams have definitely influenced on width/depth ratios at their upstream and downstream. These influences are associated with higher width/depth ratios at upstream and lower width/depth ratio at downstream. Furthermore, the maximum depth of channels had significant influenced by check dams. As for cross section areas, no significant difference existed between cross sections through total channels and check dams.
  K. Solaimani and S. Lotfi
  The aim of this study was capability investigation of the satellite KFA-1000 colour and panchromatic images to determine an elongated tree border of two different vegetation communities of forest and rangeland, which have resulted from a natural and anthropogenic environmental gradient in northern flank of Alborz range. In this study we investigate the use of stereoscopic mapping to produce a classification of a tree line ecotone in Northern Alborz Mountains of Vazroud Basin using visual images which has supported with the field investigation as ground control in June 2008 as well. From north toward south parts the transition with altitude is from dense forest to treeless rangeland and herbaceous vegetation. The relationships between the probability of class membership for the two end-member classes of scrub and forest and rangeland and the percentage ground cover of these vegetation classes were highly significant: r2 = 0.89 and r2 = 0.95, respectively.
  K. Solaimani , S. Mashari and S.R. Moosavi
  The aim of this study is an experimental investigation on landslide hazards in Tajan Basin and its increasing due to land use changing, deforesting, road and other construction. The main strategy for restricting the damage caused by the activity of landslides is to avoid these regions. To accomplish this, landslide zonation hazard map of the area is required. There are different methods for zoning of different regions in term of susceptibility to landslide. Because of geological conditions of the study area, Anbalagan method purposed to gain the results. For landslide hazards zonation map the required maps of slope, aspect, land use, lithology, structural lithology, ground water, landform and facet map prepared using GIS software of Arc view and Arc map related to Anbalagan method. For the accuracy evaluation of the used method landslide distribution map provided for the study area which has compared with the landslide zonation map. The results showed that the most of landslides are occurred in VHH zone (28%) and HH zone (55.5%) and the rest of them are occurred in MH zone, which have predicted by the mentioned method. The results of fieldwork performed in summer 2008 with the method of Anbalagan were used to assess slope failure.
  K. Solaimani , M. Miryaqobzadeh and S. Lotfi
  In this study, the change detection techniques were applied by using maximum likelihood supervised classification and post-classification on the Landsat images acquired 1997 and 2000 for the Lar Dam water level changes in Northern part of Iran. Three different classification of minimum distance, parallel piped and maximum likelihood were carried out on two different date of images individually with the aid of ground truth data. Ground truth as control points were collected during four field trips conducted between 2003 and 2007 (the Lar Dam office has helped to provide some ground truth data) which have supported with the recent recorded discharges. Using ancillary data, visual interpretation and expert knowledge of the Lar Dam basin through field further refined the classification results. Calculation of the accuracy was used to produce change image through cross-tabulation. The results revealed that the reservoir level changed about 6 km2 due to the seepage development in karsts formation during the study period.
 
 
 
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