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
Citations
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Journal ArticleDOI
Hydrologic issues in arid, unsaturated systems and implications for contaminant transport
TL;DR: In this paper, the authors present an analysis of unsaturated flow and transport in arid regions, not only in water resource evaluation but in contaminant transport as well, partic- ularly in siting waste disposal facilities and in remediat- ing contaminated sites.
Journal ArticleDOI
Nitrogen and water flows under pasture-wheat and lupin-wheat rotations in deep sands in Western Australia: 2. Drainage and nitrate leaching
TL;DR: The amount of NO i in soil at the start of the growing season was afiected by previous crop, with a lower range following wheat than following legumes, and greater N uptake by capeweed than by either wheat or lupin was the main reason for the lower amount ofNO i leached in pastures.
Journal ArticleDOI
Towards a framework for predicting impacts of land-use on recharge: 1. A review of recharge studies in Australia
TL;DR: In this paper, the authors investigated the potential for developing generic relationships from measurements of recharge made in previous studies that would allow the assessment of the impact of land-use change on recharge.
Journal ArticleDOI
Estimating groundwater recharge in a cold desert environment in northern China using chloride
TL;DR: In this paper, Zhao et al. investigated direct recharge with the chloride mass balance method for 18 unsaturated zone profiles (6-16 m depth) in the Badain Jaran Desert in northern China and found that diffuse recharge plays a minor role in the overall water balance of the shallow Quaternary aquifer.
Journal ArticleDOI
A new chloride leaching approach to the estimation of diffuse recharge following a change in land use
TL;DR: In this paper, a new approach has been developed to estimate the increase in groundwater recharge following land-use modification, which uses the degree of leaching of chloride to quantify soilwater drainage below the root zone which ultimately leads to groundwater recharge.
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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