نتایج جستجو برای: groundwater level drop reasons
تعداد نتایج: 1242594 فیلتر نتایج به سال:
Joint assessment of groundwater-surface water resources can help develop sustainable regional water management plans for intensive agriculture. In this study, we estimated allowable groundwater and surface water quantities using a water balance model, WetSpass-GMS, for the Sanjiang Plain (10.9 × 104 km2), one of the most important grain production bases in China. We then applied a double contro...
Background and Purpose: Elevated nitrate concentrations in drinking water can cause methemoglobinemia in infants, stomach cancer in adults and nitrate poisoning in animals as well. Modeling of nitrate fate and transport in groundwater to minimize nitrate concentration in groundwater has been studied by numerous researchers. Materials and Methods: In order to determine the pote...
Groundwater is a major source of water for agriculture in Sheshdeh and Gharebolagh plain. In recent years increasing drought and excessive exploitation of these resources has increased the pressure on groundwater. The aim of this study was to investigate the relationship between meteorological and hydrogeological drought using the SPI and GRI indices. Eight rain gauges stations were used to cal...
The managed recharge of groundwater is a stable and newfound technique which has already produced successful results and is expected to solve many of the problems of water resources, particularly in arid and semiarid areas. Artificial recharge of aquifers is considered as a strategy for the improvement of groundwater resources and their storage capacity to compensate for the damages inflicted o...
The Khash alluvial aquifer, in Sistan and Baluchestan Province, supplies the water needed for agriculture, drinking, and industry in the Khash area. In order to predict the future status of groundwater level and water quality, and to find aquifer management solutions, groundwater flow and solute transport models were developed using MODFLOW and MT3DMS. GMS 10.3 was used to develop the model. Ca...
Groundwater is one of the most important water resources in Fars province. Based on this study, 95 percent of the total annual water consumption in Fars is used for agriculture, whereas the percentages for domestic and industrial uses are 4 and 1 percent, respectively. Population growth, urban and industrial growth, and agricultural development in Fars have created a condition of water stress. ...
Groundwater is one of the most important environmental resources and its use continuously rises globally for industrial, agricultural, and drinking water supply purposes. Because of its importance, more knowledge about the volume of usable groundwater is necessary to satisfy the global demand. Due to the challenges in quantifying the volume of available global groundwater, studies which aim to ...
Increasing atmospheric anomalies have altered some of the extreme events such as global warming droughts, many climatic components such as precipitation, evapotranspiration, temporal and spatial distribution of precipitation, followed by dominoes of changes in freshwater resources available to communities. Human changes such as changes in the hydrological regime of rivers, changes in the qualit...
Located in reservoir area of Dahuaqiao Hydropower Station Lancang River, the Dahua ancient deposit landslide exhibits high possibility reactivation due to impoundment. In this study, physical model tests are conducted investigate variations groundwater, deformation, and failure process under different fluctuation speeds water level. Influence groundwater on stability when level fluctuating is a...
Land subsidence due to groundwater withdrawal combined with a global sea level rise creates a serious environmental problem in the coastal region. Groundwater withdrawal results in fluid pressure change in the layers. The pressure change in the layers induces both elastic and inelastic land compaction. The elastic compaction can be recovered if the water level rises again and inelastic compacti...
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