Estudio preliminar del origen del agua del Valle de Uspallata y de su contribución al río Mendoza mediante técnicas isotópicas e hidroquímicasMendoza, Argentina

  1. Sandra P. Ibáñez 1
  2. Belén Lana 2
  3. Marisol Manzano 3
  4. Susana Rovira 1
  5. Enrique Montero 4
  6. Natalia Salvi 5
  7. Héctor Segal 4
  8. Pabla Tognoli 4
  9. Pablo Grizas 4
  10. Leandro Salvioli 5
  11. Diego Márquez 5
  12. Juan Pina 4
  13. Daniel Cicerone 6
  1. 1 UNCuyo
  2. 2 Instituto Argentino de Nivología, Glaciología y Cs. Ambientales
  3. 3 Universidad Politécnica de Cartagena
    info

    Universidad Politécnica de Cartagena

    Cartagena, España

    ROR https://ror.org/02k5kx966

  4. 4 Dpto. General de Irrigación
  5. 5 Instituto Nacional del Agua
    info

    Instituto Nacional del Agua

    Buenos Aires, Argentina

    ROR https://ror.org/03dpzam72

  6. 6 Comisión de Energía Atómica
Revista:
Boletín geológico y minero

ISSN: 0366-0176

Any de publicació: 2021

Volum: 132

Número: 1-2

Pàgines: 107-114

Tipus: Article

DOI: 10.21701/BOLGEOMIN.132.1-2.011 DIALNET GOOGLE SCHOLAR lock_openAccés obert editor

Altres publicacions en: Boletín geológico y minero

Objetivos de desarrollo sostenible

Resum

The Uspallata Valley is located in Mendoza Province (Argentina), at an average altitude of 1,900 m asl. With a north-south direction and a length of around 20 km, it is an intermountain valley placed between the Pre-cordillera (to the east) and the Frontal Cordillera (to the west). The valley discharges to the Mendoza River, the main Andean course that irrigates the largest socio-productive oasis in Mendoza Province. For the last 20 years there has been a significant increase in urban growth and a disordered development of agricultural, touristic, and real estate activities in the southern part of the valley. The objective of this study is to use isotopic and hydrochemical techniques to develop a geohydrological conceptual model, in order to contribute to decision making processes of the provincial management that deals with water and land-use planning. Hydrochemical and isotopic techniques have been used to understand groundwater characteristics and provenance along the valley. Beyond compiling the scarce previous existing data, two monitoring surveys were carried out where physical-chemical parameters and stable isotopes were measured in 39 sites (wells, springs, creeks, and the Mendoza River). The preliminary isotopic balances performed suggest that around 70% of the groundwater comes from the Cordillera Frontal. Moreover, the integrated analysis of new data and existing geological and geoelectric information has allowed the development of a preliminary conceptual model identifying three zones relating to the origin of the water along the Frontal Cordillera. The study is part of the project “Use of isotopic techniques for improving the management of groundwater resources” ARG/7/008, which is funded by the International Atomic Energy.