determining origin of groundwater recharge resources, drought and wet periods by isotopic tracers in hashtgerd plain
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Estimation of Groundwater Recharge Using Tracers and Numerical Modeling in the North China Plain
Water resource shortage has been a serious problem since the 1980s in the North China Plain (NCP), resulting in plenty of environmental problems. Estimating the groundwater recharge rate accurately is vital for managing groundwater effectively. This study applied several methods, including chloride mass-balance, tracers (bromide and tritium) and numerical modeling (Hydrus-1D), to estimate groun...
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this paper has focused on the application of hydro- geochemical techniques in conceptualizing of groundwater and to estimate recharge/discharge and the renewability of aquifer in hashtgerd watershed, iran. at first, the aquifer boundary was defined based on data of existing wells and basin morphologic conditions. estimation of recharge rate at different depth intervals by using tracer mass bala...
متن کاملEvaluation of groundwater quality in urban area, using Geostatistical methods in drought and wet periods (Case study: Mashhad city)
In many urban areas, groundwater has been exploited neglecting to wet and dry periods owing to of surface water deficit. In this study, using the percent of normal rainfall index, 36 year (1971-2008) were studied and a drought event and a wet event were determined. The reason to choose two consecutive years is the effect of early wet period on groundwater quality. Physicochemical characteristic...
متن کاملGroundwater modeling for estimation of the recharge rate and identification of appropriate recharge sites in Damghan Plain, Iran
Water is the main option of any development, so having an accurate management of groundwater is necessary. This study has been done in Damghan sedimentary plain in Iran, which is located in northwest of Semnan Province. The main objective of this research was to estimate the rate and right site of recharge in Damghan plain to prevent the aquifer from decreasing the water table. For this purpose...
متن کاملUsing atmospheric tracers to reduce uncertainty in groundwater recharge areas.
A Monte Carlo-based approach to assess uncertainty in recharge areas shows that incorporation of atmospheric tracer observations (in this case, tritium concentration) and prior information on model parameters leads to more precise predictions of recharge areas. Variance-covariance matrices, from model calibration and calculation of sensitivities, were used to generate parameter sets that accoun...
متن کاملEstimating groundwater recharge in Hebei Plain, China under varying land use practices using tritium and bromide tracers
r a 200 .011 .: +86 27 .edu.cn Summary Tritium and bromide were used as applied tracers to determine groundwater recharge in Hebei Plain, North China, to evaluate the impacts of different soil types, land use, irrigation, and crop cultivation practice on recharge. Additional objectives were to evaluate temporal variability of recharge and the effect on results of the particular tracer used. Thi...
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عنوان ژورنال:
مرتع و آبخیزداریجلد ۶۲، شماره ۱، صفحات ۰-۰
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