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Simulación del flujo y transporte de la edad del agua subterránea en el Sistema Acuífero Guaraní (SAG)

Juan José Nittmann Leticia Beatriz Rodríguez Cristina Dapeña Luis Guarracino Daniel Martínez Luis Sebastián Vives

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Resumen/Descripción – provisto por el repositorio digital
The Guaraní Aquifer System- GAS is a transboundary aquifer shared by Brasil, Paraguay, Uruguay and Argentina, extending for some 1100000 km2. The GAS is the third among the largest aquifers of the world, behind the Nubean sandstone aquifer in Africa (2500000 km2) and the Great Artesian Basin in Australia (1750000 km2). In Argentina it extends under Misiones and Corrientes Provinces, North of Entre Ríos Province, East of Chaco and Formosa provinces and Northeast of Santa Fe province. The current conceptual hydrogeologic model for the GAS has many uncertainties, particularly in the south. One of them is related to the definition of the aquifer border and the geologic model due to stratigraphic information scarcity. Doubts have been raised in relation to the existence of discharge/recharge zones in the Argentinean sector and their relationship with the surface water system. Besides, 14C measurements resulted in groundwater ages over 40000 years. The current numerical model is two-dimensional, under steady state flow regime without considering overlying/underlying formations. Taking into account the possible interaction between the GAS sandstones with confining units is keen to understand the effect of the hydraulic connections within the system and consequently the mixture of waters of different ages. In this manner, one could build a more reliable water balance in order to manage the aquifer under sustainable uses scenarios.
Palabras clave – provistas por el repositorio digital

Guaraní Aquifer System; Modeling; Flow; Groundwater Age; Groundwater; Isotopes; Acuífero Guaraní; Modelación; Flujo; Edad del Agua; Agua subterránea; Isótopos

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No requiere 2014 Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) acceso abierto

Información

Tipo de recurso:

tesis

Idiomas de la publicación

  • inglés

País de edición

Argentina

Fecha de publicación