A FRAGILIDADE AMBIENTAL DO AQUÍFERO SERRA GERAL NA SUB-BACIA HIDROGRÁFICA DO ALTO URUGUAI-BRASIL (the environmental fragility in Serra Seral aquifer in Alto Uruguai hydrographic basin in Brazil)
Abstract
O objetivo deste trabalho é apresentar uma proposta metodológica para avaliar a fragilidade ambiental do Aquífero Serra Geral na Sub-Bacia Hidrográfica do Alto Uruguai, comparando os resultados com aqueles obtidos pelo projeto “ Desenvolvimento Metodológico e Tecnológico para Avaliação Ambiental Integrada Aplicada ao Processo de Análise de Viabilidade de Hidrelétricas”, denominado “ Frag-Rio”. Os procedimentos metodológicos incluíram a extração e identificação das intersecções dos lineamentos em imagens SRTM utilizando SIG’s. A metodologia adotada mostrou-se eficaz identificando áreas frágeis junto as calhas dos rios, no noroeste e norte da sub-bacia. Na escala de trabalho adotada, as áreas de fragilidade elevada são equivalentes considerando-se ambas as metodologias. As vantagens da metodologia desenvolvida em relação a do Frag-Rio incluem a discriminação de áreas com fragilidade elevada dispersas pela sub-bacia e a facilidade de acesso as imagens SRTM.
Palavras-chave: Águas Subterrâneas, Aquífero Serra Geral, Lineamentos, Projeto Frag-Rio, Bacia Hidrográfica.
ABSTRACT
The objective of this paper is to present a methodological proposition in order to evaluate the environmental fragility of the Serra Geral Aquifer in the Sub-Basin of the Upper Uruguay comparing the results with those obtained by the project “Methodological and Technological Development for Integrated Environmental Assessment Applied to the Process of Analyses of Hydropower Feasibility, “called” Frag-Rio.” The methodological procedures included the extraction and identification of the intersections of lineaments in the SRTM images using GIS. The methodology adopted proved to be effective at identifying vulnerable areas to natural flow of rivers in the northwest and northern sub-basin. On the scale of work adopted, the areas of high vulnerability are equivalent considering both approaches. The advantages of the methodology developed in relation to the Frag-Rio include the discrimination of areas with high fragility scattered by the sub-basin and the easy access to SRTM images.
Key words: Underground Waters, Serra Geral Aquifer, Lineaments, Project Frag-Rio, Hydrographic Basin.
RESUMEN
El presente trabajo tuvo como objetivo presentar una propuesta metodológica para evaluar la fragilidad ambiental del Acuífero Serra Geral en la Sub-Cuenca Hidrográfica del Alto Uruguay comparando los resultados con aquellos obtidos por el proyecto “ Desarrollo Metodológico y Tecnológico para Evaluación Ambiental Integrada Aplicada al Proceso de Análisis de Viabilidad de Hidrelétricas”, llamado “ Frag-Rio”.Los procedimientos metodológicos abarcaron la extración y identificación de las interseciones de los lineamientos en imágenes SRTM usando SIG’s. La metodología adoptada se mostró satisfatoria identificando áreas frágiles junto a las callas de los ríos, en el noroeste y norte de la sub-cuenca. En el cómputo del trabajo adoptado, las áreas de fragilidad elevada son equivalentes contemplando las metodologías. Las ventajas de la metodología desarrollada en relación a del Frag-Rio abarca la discriminación de las áreas con fragilidad elevada desparramda por la sub-cuenca y la facilidad del acceso a las imágens SRTM l.
Palabras clave: Águas subterráneas, Acuífero Serra Geral, Lineamientos, Proyecto Frag-Rio, Cuenca Hidrográfica.
DOI: 10.4215/RM2011.1023. 0014
Keywords
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