Análise ambiental urbana com imagens do google earth

Anais XV Simpósio Brasileiro de Sensoriamento Remoto - SBSR, Curitiba, PR, Brasil, 30 de abril a 05 de maio de 2011, INPE p.3805

Análise ambiental urbana com o uso de imagens Google Earth Bruno Zucuni Prina1 Leonice Schio1 Suelen Irigaray de Miranda1 Michele Monguilhott2 Universidade Federal de Santa Maria - UFSM 97105-900 – Santa Maria- RS, Brasil [e-mail], [e-mail], [e-mail] Colégio Politécnico de Santa Maria Telefone (55) 3220-9419 – Santa Maria- RS, Brasil [e-mail]
Abstract. This paper aims to analyze satellite images in order to identify changes in the geographical space. Considering images of 1979 (topographic map) and 2010 (Google Earth/Geo Eye’s) that enabled to follow multitemporal aspects such as urban environment, hydrography and ciliary wood areas in the city of Rosário do Sul. This work objectifies to distinguish the different environments that suffered shifts over time, interpreting the areas that have suffered environmental impacts around the river Ibicuí and Santa Maria, making use of ArcGIS and Envi Geoprocessing applications. With the result of images overlapping through the Arcgis application obtained a detailed mapping of the area, which emphasized the evolution of fragmentation that occurred in the city. At analyzing the image regarding the city of Rosario do Sul, we realized an increase in the urban area. One notable consequence of the urban area growth was the decrease of forest around the city. Lastly, rivers aggradation was visualized, which, besides being a natural process, it can be accelerated by anthropic action. Thus, it was developed a map, through specific techniques, in which emphasized the existing differences between the forest, hydrography and the urban area of Rosario do Sul in the period between 1979 and 2010. Palavras-chave: satellite images; geographical changes; ArcGis®; Google earth, imagens de satélite; alterações geográficas; arcGis®; google earth.
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