Study of the infiltration and recharge through the sand dunes in arid zones with special reference to the stable isotopes and thermonuclear tritium

Comparison of methods to estimate ephemeral channel recharge, Walnut Gulch, San Pedro River Basin, Arizona

“…Isotopic analysis results provide a conceptual model of ephemeral channel recharge at WGEW that is dominated by relatively rapid transmission through very porous alluvium precluding significant opportunity for evaporation in the unsaturated zone [Dincer et al, 1974]. The relatively small percentage of evaporation and transpiration abstractions from ephemeral channel transmission losses supports this conclusion (see section 4.1.3 and Table 1).…”

The challenges and implications of assessing groundwater recharge: A case study – northern Sandveld, Western Cape,South Africa

“…The study area, situated on the west coast of South Africa eral rivers (Moench and Kisiel, 1970;Besbes et al, 1978;Abdulrazzak, 1983;Dillon and Liggett, 1983;Lloyd, 1986;Walters, 1990;Sorman and Abdulrazzak, 1993), subsurface drainage from mountain areas through the alluvial material of valley beds (Khazaei, 1999) and the direct entrance of rainfall into the alluvial material of the lower plains (Dincer et al, 1974). In order to develop a successful recharge estimation approach for a region, the effects of all the mechanisms must be taken into account.…”

In situ unsaturated zone water stable isotope (<sup>2</sup>H and <sup>18</sup>O) measurements in semi-arid environments: a soil water balance

“…Water stable isotopes have been successfully used for decades as powerful proxies for the description of water fluxes such as infiltration in humid (Saxena, 1987) or semiarid regions (e.g., Dincer et al, 1974;Allison and Hughes, 1983), evapotranspiration (e.g., Allison, 1988, Wang et al, 2012;Dubbert et al, 2013;Skrzypek et al, 2015), plant root water uptake (e.g., Dawson and Ehleringer, 1991;Ehleringer and Dawson, 1992;Dawson, 1996;Yang et al, 2010), hydraulic redistribution (Dawson, 1993;Caldwell et al, 1998), and catchment hydrology (e.g., Sklash and Farvolden, 1979;Richard and Shoemaker, 1986;Tetzlaff et al, 2007;Kendall and McDonnell, 2012). Soil water stable isotopes provide information on flow pathways and mixing within the unsaturated zone (e.g., Gazis and Feng, 2004;Stumpp and Maloszewski, 2010;Garvelmann et al, 2012;Mueller et al, 2014).…”