نتایج جستجو برای: mashhad plain aquifer
تعداد نتایج: 58335 فیلتر نتایج به سال:
The purpose of this research is the investigation of Kashan aquifer situation, the depth of bed rock, thickness of aquifer saturation layer, boundary of salt water and the investigation of sediment permeability in Kashan plain using electric resistance with Schlumberger arrangement. In this study, 41 Latitudinal profiles and 1 longitudinal profile were used in order to evaluate aquifer situatio...
Drought and overexploitation of groundwater should control the aquifer properties (e.g. storage coefficient and transmisivity). The role of stress factors is identified when the performance of aquifer hydrodynamic coefficients be studied. Since in the most aquifers, allocation and utilization management is based on the pumping test in the past, it would not be expected the optimal management. I...
One of the most essential and appropriate groundwater model components is accurate information of the recharge values among input data often introduced to the model as the percentage of rainfall of aquifers. The recharge values are influenced by many temporal and spatial factors. Firoozabad plain is one of the suitable plains for agriculture in the Fars province in which utilization of groundwa...
groundwaterqualityassessmentandmappingquality parametersto assesstheresource fordifferent purposesis important.the purposeofthisstudy was toevaluate the qualityof groundwatersahra bagh plainandmapping itfordifferentpurposes.forthispurpose, thegroundwaterquality datafrom (1382 to 1392)wasused. inthisstudy,to evaluate effect ofwater scaling and corrosion from lanzlyh saturation and stability ryzn...
In the Pingtung Plain of southern Taiwan, elevated levels of NO₃--N in groundwater have been reported. Therefore, efforts for assessing groundwater vulnerability are required as part of the critical steps to prevent and control groundwater pollution. This study makes a groundwater vulnerability assessment for the Pingtung Plain using an improved overlay and index-based DRASTIC model. The improv...
Background The presence of nitrate is one of the factors limiting the quality of groundwater resources, particularly in arid and semi-arid climates. Therefore, the knowledge about the distribution of nitrate in groundwater and its source has an effective role in protecting health. The study aimed to optimize an interpolation method to predict the nitrate concentration and assessment of aquifer ...
Land subsidence due to groundwater resources extraction is one of the abundance events occurred in Iran. If it is not properly managed, this phenomenon can cause irreparable damage to the affected areas. Population growth and agricultural technology have also led to overexploitation of the groundwater resources in some parts of Iran. The rate of land subsidence due to overexploitation of the g...
Ground water is regarded as an important source of sweet water because it has less pollution potential and it has high reserve capacity compared with surface water. Therefore, it I necessary to prevent pollution from ground water, considering management of ground water resources in line with quantitative management of water resources. In this research the potential vulnerability of ground water...
Background and Objective: The concentration of nitrate, factors affecting the balance sheet, and the changes in an aquifer is of utmost importance. Because modeling is an efficient method to predict the concentration of ions in water resources, in this study using lumped-parameter model and Monte Carlo simulation model, the nitrate concentrations in groundwater resources of Qazvin Plain were es...
Coastal aquifers comparing noncoastal aquifers, are faced to natural hazards more rapidly due to incorrect managements (Bear et al. 1999). Aquifer’s vulnerability to various pollutants or intrusion of saline water to coastal aquifers have been studied by several researchers so far (Chachadi et al., 2002 Cardona et al., 2004). Overlay models are produced to overlay physical indicator maps ...
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