نتایج جستجو برای: karstic groundwater potential modeling
تعداد نتایج: 1448468 فیلتر نتایج به سال:
The study of the groundwater resources and their properties are very important due to the vast desert areas and arid conditions. Given the current situation in Iran, the water supply is one of the most important territorial and environmental problems. In this study, groundwater resources were surveyed and mapped in Yazd Province and their properties were modeled to determine their effectiveness...
introduction: ground water as a dynamic and recyclable natural resource in fractured rock terrains are characterized by single and double fracture porosity models. due to the heterogeneous nature of the medium hydraulic properties of these rocks are mainly controlled by fracturing and influenced by multivariate parameters. this heterogeneity is due to various compactions , density of fractures ...
Comment on The Role of Groundwater in Delaying Lake Acidification by M. P. Anderson and C. J. Bowser
Anderson and Bowser [1986], hereafter referred to as AB, presented a very interesting paper on the study of the role of groundwater in delaying lake acidification i Wisconsin. By considering the input/output of hydrogen ion with respect o the aquifer, including nonconservative transport through the use of the retardation factor, the effect of a delay in the arrival of acid to the lake is demons...
The response of stream ecosystems to climate change will depend in part on groundwater processes that reduce the sensitivity streams atmospheric conditions. We investigated thermal across a gradient inputs defined by karst terrain (carbonate parent materials) headwaters Potomac River basin eastern North America. collected temperature data and quantified for 30 sites from relationship between da...
This study mapped and analyzed groundwater potential using two different models, logistic regression (LR) and multivariate adaptive regression splines (MARS), and compared the results. A spatial database was constructed for groundwater well data and groundwater influence factors. Groundwater well data with a high potential yield of ≥70 m3/d were extracted, and 859 locations (70%) were used for ...
The prevention of biodiversity loss in agricultural landscapes to protect ecosystem stability and functions is major importance itself for the maintenance associated services. Intense agriculture leads a species richness homogenization pools as well fragmentation natural habitats groundwater pollution. Constructed wetlands stand nature-based solutions (NBS) buffer degradation water quality by i...
Groundwater ecosystems have a diverse and unique fauna, often dominated by Crustacea generally characterised short range endemics confined to single aquifers. Much of this knowledge has come from studies conducted either in fractured rock aquifers or alluvial Karstic subterranean environments are present the Cambrian Limestone Aquifer (CLA) Northern Territory, Australia, freshwater aquifer whic...
The characteristics of arsenic-contaminated groundwater and the potential risks from the groundwater were investigated. Arsenic contamination in groundwater was found in four villages (Vinh Tru, Bo De, Hoa Hau, Nhan Dao) in Ha Nam province in northern Vietnam. Since the groundwater had been used as one of the main drinking water sources in these regions, groundwater and hair samples were collec...
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