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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