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Auteur Jim Constantz |
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1260 - Heat as a tool for studying the movement of ground water near streams (Bulletin de U.S. Geological Survey circular, 1260 [01/01/2003])
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Titre : 1260 - Heat as a tool for studying the movement of ground water near streams Type de document : texte imprimé Auteurs : David Arthur Stonestrom, Éditeur scientifique ; Jim Constantz, Éditeur scientifique Année de publication : 2003 Importance : 96 p. Langues : Américain (ame) [n° ou bulletin]Exemplaires(1)
Code-barres Origine Cote Support Section Disponibilité FFS001981 2.2 USGS USG Périodiques Géographique Exclu du prêt 1703-1 - Thermal Methods for Investigating Ground-Water Recharge (Bulletin de U.S. Geological Survey professional paper, 1703-1 [01/01/2006]) / Kyle W. Blasch
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Titre : 1703-1 - Thermal Methods for Investigating Ground-Water Recharge Type de document : texte imprimé Auteurs : Kyle W. Blasch, Auteur ; Jim Constantz, Auteur ; David Arthur Stonestrom, Auteur Année de publication : 2006 Importance : 1 vol. (?? p.) Présentation : ill. en coul., cartes, couv. ill. en coul. Format : 28 cm Langues : Américain (ame) Résumé : Recharge of aquifers within arid and semiarid environments is defined as the downward flux of water across the regional water table. The introduction of recharging water at the land surface can occur at discreet locations, such as in stream channels, or be distributed over the landscape, such as across broad interarroyo areas within an alluvial ground-water basin. The occurrence of recharge at discreet locations is referred to as focused recharge, whereas the occurrence of recharge over broad regions is referred to as diffuse recharge. The primary interest of this appendix is focused recharge, but regardless of the type of recharge, estimation of downward fluxes is essential to its quantification. Like chemical tracers, heat can come from natural sources or be intentionally introduced to infer transport properties and aquifer recharge. The admission and redistribution of heat from natural processes such as insolation, infiltration, and geothermal activity can be used to quantify subsurface flow regimes. Heat is well suited as a ground-water tracer because it provides a naturally present dynamic signal and is relatively harmless over a useful range of induced perturbations. [n° ou bulletin]