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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Ecohydrological control of deep drainage in arid and semiarid regions
M.S. Seyfried,Susan Schwinning,Michelle Ann Walvoord,William T. Pockman,Brent D. Newman,Robert B. Jackson,Fred M. Phillips +6 more
TL;DR: In this article, the authors synthesize research from the fields of ecology and hydrology to address the issue of deep drainage in arid and semi-arid regions, and propose a conceptual model con- sistent with these results that the native xeric-shrubdominated, plant communities that gained dominance during the Holocene generated and maintained these conditions.
Journal ArticleDOI
Climate change and groundwater: A short review
Walter Dragoni,B. S. Sukhija +1 more
TL;DR: In this article, the authors present a summary of the current knowledge of the relationships between climatic variations and water resources, with emphasis on groundwater, and review the main issues that groundwater specialists will have to face and study in order to minimize the impact of climatic variation and to protect groundwater resources.
Journal ArticleDOI
Soil-water flux in the Southern Great Basin, United States: Temporal and spatial variations over the last 120,000 years
Scott W. Tyler,J. B. Chapman,S. H. Conrad,D.P. Hammermeister,D.O. Blout,J. J. Miller,M.J. Sully,J.M. Ginanni +7 more
TL;DR: In this article, a detailed drilling and sampling program was conducted at the Nevada Test Site (NTS) to quantify soil-water flux and its relation to climate, showing the sensitivity of arid regions to the extreme variations in climate experienced by the region over the last two glacial maxima.
Journal ArticleDOI
Field study of spatial variability in unsaturated flow beneath and adjacent to playas
TL;DR: In this paper, the authors quantified unsaturated flow beneath playa and adjacent interplaya settings at a site in the Southern High Plains (United States) to resolve issues related to where and how water moves through the unsaturated zone.
Journal ArticleDOI
Groundwater and lake evolution in the Badain Jaran Desert ecosystem, Inner Mongolia
Jinzhu Ma,W. Michael Edmunds +1 more
TL;DR: The amount and timing of aquifer recharge and the evolution of lakes and groundwater in the south-eastern Badain Jaran desert of Inner Mongolia, with high megadunes, has been investigated using stable isotopes and hydrochemistry.
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
Erik Eriksson,Vachi Khunakasem +1 more