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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Conversion of degraded farmlands to orchards decreases groundwater recharge rates and nitrate gains in the thick loess deposits
Yanan Huang,Bingbing Li,Zhi Li +2 more
TL;DR: In this paper, the authors attempted to connect land use with groundwater recharge and quality in an arid region covered by loess up to 350 m deep, and collected 1300 soil samples for 26 profiles of 10m deep, which is deep enough for the water and solutes in soil to be under steady state.
Journal ArticleDOI
Assessment of Halon-1301 as a groundwater age tracer
TL;DR: In this paper, the authors determined Halon-1301 and inferred age information in 17 New Zealand groundwater samples and various modern (river) water samples, which allowed for identification of issues such as contamination of the water with modern air during sampling.
Journal ArticleDOI
Estimate of regional groundwater recharge rate in the Central Haouz Plain, Morocco, using the chloride mass balance method and a geographical information system
TL;DR: In this paper, the aquifer recharge rate in the piedmont region that links the High Atlas and the Central Haouz Plain was estimated using the chloride mass balance hydrochemical method, which is based on the relationship between the chloride concentrations in groundwater and rainwater.
Estimation of Groundwater Recharge to the Parmelia Aquifer in the Northern Perth Basin
TL;DR: In this article, a variety of physical and chemical methods for estimating groundwater recharge to an unconfined aquifer were evaluated for their practicality and applicability in this study, and the outcomes of this study should guide extrapolation of recharge estimates to surrounding regions and should help identify efficient, low cost methods for assessing recharge that can be applied elsewhere.
Journal ArticleDOI
Use of Hydrochemistry, Stable Isotope, Radiocarbon, 222Rn and Terrigenic 4He to Study the Geochemical Processes and the Mode of Vertical Leakage to the Gambier Basin Tertiary Confined Sand Aquifer, South Australia
TL;DR: In this paper, the authors identify the origin, geochemical evolution and mode of vertical leakage to the Gambier Basin confined aquifer, south east of South Australia, using electrical conductivity logging.
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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