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Información tecnológica

On-line version ISSN 0718-0764

Abstract

VALENZUELA, Lorenzo; RAMIREZ-HERNANDEZ, Jorge  and  PALOMARES, Ramón B. Isotopic composition of groundwater and its relationship with salinity in the Valley of San Luis Rio Colorado Sonora Mexico. Inf. tecnol. [online]. 2013, vol.24, n.2, pp.57-66. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642013000200008.

In this work, the isotopic composition and chloride concentration of San Luis Rio Colorado, Sonora, in Mexico were used to determine the origin of groundwater and to establish the salinity increase that has been observed in the irrigation water. The aquifer mineralization has provoked deterioration of this water. The isotopic composition showed a fractioning due to the sudden evaporation and the mixing of water percolated before the dam system, constructed upstream, with water infiltrated to the aquifer after evaporation in the reservoirs, these water types are known as old and recent, respectively. Unlike what it could be expected, the isotopic composition determined that mineralized water from irrigation channels is not yet present in the aquifer.

Keywords : stable isotopes; aquifer; groundwater; water quality; evaporation.

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