GOMEZ Maria Laura
congresos y reuniones científicas
Application of isotopic techniques for water resource management in an arid region of western Argentina
GOMEZ, M. L.; ARAVENA, RAMON; ALVAREZ, A.; IBAÑEZ, SANDRA; DONNA, F.
Simposio; International Symposium on Isotope Hydrology: Revisiting Foundations and Exploring Frontiers; 2015
International Atomic Energy Agency
The Carrizal Subbasin (CS), an arid region in the piedmont of the central Andes, is an area where agriculture and petroleum-related activity are superimposed. Increase of groundwater salinity in some wells has created legal conflicts between water users. Major ions and a set of isotopes analyses were carried out to provide information for evaluating the origin of the salinization in the study area. The stable isotopes, tritium and radiocarbon data shown groundwater recharge is associated to the Mendoza River and it also demonstrated that the source of groundwater salinity is associated with irrigation return flows in the agriculture areas. Evidence of the presence of water in the aquifer from re-injection from secondary oil recovery techniques is also shown in this study without any influence in groundwater salinity