Journal ArticleDOI
The use of environmental chloride and tritium to estimate total recharge to an unconfined aquifer
GB Allison,MW Hughes +1 more
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In this article, a portion of the Gambier plain underlain by an unconfined aquifer with readily definable hydrologic boundaries has been divided into a number of areas within which soil types have similar hydrological properties, and mean annual recharge has been estimated for each area using both the tritium concentration and the chloride concentration of water within the soil profile.Abstract:
A portion of the Gambier Plain underlain by an unconfined aquifer with readily definable hydrologic boundaries has been divided into a number of areas within which soil types have similar hydrologic properties. Mean annual recharge has been estimated for each area using both the tritium concentration and the chloride concentration of water within the soil profile. Good agreement was obtained between the two methods with local recharge varying between 50 and 250 mm year-1. Total mean annual recharge for the area has been estimated to be 2.4 ± 0.3 x 108 m3 year-1, and this compares favourably with an estimated discharge of 2.5 ± 0.3 x 108 m3 year-1.read more
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Land use change impacts on the amount and quality of recharge water in the loess tablelands of China.
Yanan Huang,Qingrui Chang,Zhi Li +2 more
TL;DR: Investigating the relationship between LUC and groundwater found that the LUC from farmland to apple orchard has little impact on short-term groundwater recharge and quality; long term impact, however, may be significant.
Journal ArticleDOI
Isotopic fingerprints of paleoclimates during the last 30,000 years in deep confined groundwaters of southern India
TL;DR: Isotopic and geochemical evidence of paleoclimates, especially for the last glaciation, has been obtained from deep confined groundwaters of southern India as discussed by the authors, showing distinct excursions inferred to be related to climatic variations.
Journal ArticleDOI
Estimation of soil moisture and groundwater recharge using the TOPOG_IRM Model
TL;DR: A distributed parameter ecohydrological model (TOPOG_IRM) was applied to a 1.6 km2 pastoral catchment in southeast Australia for estimating soil moisture and groundwater recharge, for a period of 1992-1994 as discussed by the authors.
Journal ArticleDOI
Characterisation of recharge processes and groundwater flow mechanisms in weathered-fractured granites of Hyderabad (India) using isotopes
B.S. Sukhija,Dontireddy Venkat Reddy,P. Nagabhushanam,S. K. Bhattacharya,R.A. Jani,Devender Kumar +5 more
TL;DR: In this article, a conceptual hydrogeologic model has evolved suggesting that the fracture network is connected either to distant recharge source or to a surface reservoir (evaporating water bodies) apart from overlying weathered zone, explaining various resultant groundwaters having varying 14C ages, chloride and δ18O concentrations.
Journal ArticleDOI
Assessment of groundwater vulnerability in the Rio Artiguas basin, Nicaragua
TL;DR: In this article, the authors evaluated the groundwater intrinsic vulnerability in the Rio Artiguas basin and provided information for sustainable use of water resources by using the DRASTIC and GOD methods to analyse the relative pollution potential within the basin.
References
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Journal ArticleDOI
Photometric determination of chlorides in water.
Journal ArticleDOI
Chloride concentration in groundwater, recharge rate and rate of deposition of chloride in the Israel Coastal Plain
Erik Eriksson,Vachi Khunakasem +1 more
TL;DR: In this article, a study of the possibility of using chloride concentrations in groundwater for estimating recharge rates is described, the application being demonstrated on available data from the Coastal Plain Aquifer in Israel.
Journal ArticleDOI
Chloride balance of some farmed and forested catchments in southwestern Australia
A. J. Peck,D. H. Hurle +1 more
TL;DR: In this paper, the authors estimate that removal of forest vegetation from forested catchments has increased groundwater discharge of whole catchments by amounts ranging from about 1 to 13 cm3/cm2yr, and the characteristic times for equilibrium of chloride input and loss on farmed catchments are estimated to range from 30 to 400 years.
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Chloride concentration in groundwater, recharge rate and rate of deposition of chloride in the Israel Coastal Plain
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