Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina

A case study is presented to assess the relevance of geomorphology in hydrogeological phenomena in an arid coastal area in the Argentinean extra-Andean Patagonia (Peninsula Valdes) with an average rainfall of 232 mm/year and a soil moisture deficit of about 472 mm/year. Various geomorphic units were...

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Detalles Bibliográficos
Autores principales: Álvarez, María del Pilar, Weiler, Nilda E., Hernández, Mario Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Geología
Hydrogeomorphology
Geomorphology
Groundwater flow
Arid regions
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/137517
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-137517
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Hydrogeomorphology
Geomorphology
Groundwater flow
Arid regions
Argentina
spellingShingle Geología
Hydrogeomorphology
Geomorphology
Groundwater flow
Arid regions
Argentina
Álvarez, María del Pilar
Weiler, Nilda E.
Hernández, Mario Alberto
Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina
topic_facet Geología
Hydrogeomorphology
Geomorphology
Groundwater flow
Arid regions
Argentina
description A case study is presented to assess the relevance of geomorphology in hydrogeological phenomena in an arid coastal area in the Argentinean extra-Andean Patagonia (Peninsula Valdes) with an average rainfall of 232 mm/year and a soil moisture deficit of about 472 mm/year. Various geomorphic units were identified by interpreting Landsat 7 satellite images processed with ER Mapper software and then surveyed in the field, as well as by geological characterization. The hydrodynamic analysis was based on a survey of 89 wells, the construction of equipotential maps, and the interpretation of pumping-test results by a non-equilibrium method. The hydrochemical characterization was based on chemical tests analyzed with the Easy_Quim 6.0 application. The combination of geomorphological, geological, hydrodynamic and hydrochemical elements allowed the definition of hydromorphological units that are typical of recharge, circulation and discharge areas, the latter both for coastal and inland areas in wetlands (salt pans) with elevations to −40 m relative to sea level. These units and the criteria used for their definition allow immediate recognition of hydrogeological phenomena in arid regions such as the extra-Andean Patagonia, with low information density but with near-optimal satellite imaging of landforms due to the lack of vegetation cover.
format Articulo
Articulo
author Álvarez, María del Pilar
Weiler, Nilda E.
Hernández, Mario Alberto
author_facet Álvarez, María del Pilar
Weiler, Nilda E.
Hernández, Mario Alberto
author_sort Álvarez, María del Pilar
title Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina
title_short Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina
title_full Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina
title_fullStr Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina
title_full_unstemmed Linking geomorphology and hydrodynamics: a case study from Península Valdés, Patagonia, Argentina
title_sort linking geomorphology and hydrodynamics: a case study from península valdés, patagonia, argentina
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/137517
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