INVESTIGADORES
OSELLA Ana Maria
artículos
Título:
Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados valley in the Sierras Pampeanas, Argentina
Autor/es:
OSELLA, A.,; FAVETTO, A.; MARTINELLI, PATRICIA; CERNADAS, D.
Revista:
JOURNAL OF APPLIED GEOPHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1999 vol. 41 p. 303 - 312
ISSN:
0926-9851
Resumen:
The Antinaco-Los Colorados valley is a wide N?S tectonic depression, located between the Sa. de Velazco and the Sa.
de Famatina, both ranges belonging to the Sierras Pampeanas thick-skinned deformation province in Argentina. From
previously reported magnetotelluric MT data, it is known that the thickness of the sedimentary sequences may reach up to ? .
8 km in the central zone of this basin. In particular, the Quaternary-to-recent alluvial filling contains an aquifer complex of
great importance for this semiarid zone providing water for irrigation and also for human consumption. To obtain
information about the electrical structure of the alluvial cover, 17 vertical electric soundings were carried out along an E?W
traverse profile extending from one side of the valley to the other. A geoelectrical model is proposed taking into account
complementary hydrogeological and geophysical information. In this model, the various layers which could contain fresh
water are identified and the level of the water table inferred from the model is almost coincident with that observed from
existing wells in the surveyed zone