| Titre : | U.S. Geological Survey professional paper, 1703 - Ground-Water Recharge in the Arid and Semiarid Southwestern United States |
| Auteurs : | David Arthur Stonestrom, Auteur |
| Type de document : | Bulletin : texte imprimé |
| Paru le : | 01/01/2007 |
| Année de publication : | 2007 |
| Format : | 1 vol. (vii-414 p.) / ill. en noir et coul., cartes, couv. ill. en coul. / 28 cm |
| Langues: | Américain |
| Résumé : |
The timing and location of streamflow in the San Pedro River are partially dependent on the aerial distribution of recharge in the Sierra Vista subwatershed. Previous investigators have assumed that recharge in the subwatershed occurs only along the mountain fronts by way of stream-channel infiltration near the contact between low-permeability rocks of the mountains and the basin fill. Recent studies in other alluvial basins of the Southwestern United States, however, have shown that significant recharge can occur through the sediments of ephemeral stream channels at locations several kilometers distant from the mountains. The purpose of this study was to characterize the spatial distribution of infiltration and subsequent recharge through the ephemeral channels in the Sierra Vista subwatershed.
Infiltration fluxes in ephemeral channels and through the basin floor of the subwatershed were estimated by using several methods. Data collected during the drilling and coring of 16 boreholes included physical, thermal, and hydraulic properties of sediments; chloride concentrations of sediments; and pore-water stable-isotope values and tritium activity. Surface and subsurface sediment temperatures were continuously measured at each borehole. |
Exemplaires (1)
| Code-barres | Cote | Support | Section | Disponibilité |
|---|---|---|---|---|
| FFS035842 | 2.2 USGS PP | Périodiques | Géographique | Consultable sur place Exclu du prêt |
