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Este artigo tem como objetivo delimitar as areas de risco a vocorocamento na cidade de Manaus. Para isto, realizou-se a elaboracao de mapa de localizacao das vocorocas, do modelo digital de elevacao com delimitacao das areas de risco a vocorocamento e, quantificacao das residencias em areas de risco por zona administrativa. O mapeamento das areas de risco a erosao e a quantificacao de casas nas areas susceptiveis foram elaborados no software ArcGis (versao 9.3). A extensao deste poligono foi delimitada de acordo com criterios geomorfologicos, isto e, as residencias localizadas entre os divisores de agua e a cabeceiras e/ou bordas das vocorocas compoem as moradias em risco ambiental. Os resultados permitem afirmar que existem 117 vocorocas dispostas nas cinco zona administrativas. A leste apresenta 82% com 96 incisoes e apresenta a maior quantidade, ao passo que, as zonas oeste e centro-oeste possuem as menores, totalizando 4 e nenhum feicao erosiva. Alem disso, existem 8.684 residencias localizadas em areas de risco a erosao por vocorocamento. Palavras chave : areas de risco, vocoroca, geotecnologias, Manaus Abstract This article aims to delineate risk areas gullies in the city of Manaus. For this, there was the development of the location of gullies map, digital elevation model with delineation of risk areas to vocorocamento and quantification of households in risk areas by administrative area. The mapping of erosion risk and quantification of houses in areas which were developed in ArcGIS (version 9.3) software. The length of this polygon was defined according to geomorphological criteria , ie , the residences located between watersheds and headwaters and / or edges of gullies comprise villas in environmental risk . The results indicate that there are 117 craters arranged in the five administrative area. The east has 82 % to 96 incisions and has the highest amount, whereas the western and midwestern areas have lower, totaling 4 and no erosive feature. In addition, there are 8,684 households located in areas at risk from erosion by gullies. Palavra chave: risk area, gullies, geotechnology, Manaus

caderno de geografia

Uso de geotecnologias aplicadas à delimitação de áreas de risco a voçorocamento em Manaus (AM) / Geotechnology use apply to the limits of risk area in a gullies in Manaus (AM) - DOI: 10.5752/P.2318-2962.2015v25n43p192