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Esse trabalho visa fazer a caracterizacao neotectonica da area de estudo por meio da analise morfologica da rede de drenagem e de calculos morfometricos destinados a deteccao de tectonica recente. A area em questao esta localizada em um graben pos-mioceno onde podem ser observados riscos geologico-geomorfologicos e impactos ambientais provenientes da intensa intervencao antropogenica. Para a realizacao desse estudo fez-se necessario uma pesquisa e o levantamento de dados preteritos sobre a area de estudo tomando como base os dados obtidos por meio da vetorizacao das cartas topograficas de Goiana e Tejucupapo na escala de 1:25.000 com equidistância das curvas de nivel de 10 m. Foram utilizadas tecnicas de geoprocessamento para geracao dos produtos cartograficos: cartas hipsometrica, de declividade e o Modelo Digital de Elevacao (MDE). Os calculos morfometricos aplicados para a analise neotectonica foram o Indice Relacao Declividade/Extensao (RDE) e o indice Razao Fundo/Altura de Vale (RFAV). Os resultados obtidos indicam uma forte influencia neotectonica no padrao de drenagem da area, assim como tambem, fica evidenciado a interferencia antropogenica presente na area investigada e suas adjacencias. A B S T R A C T This article aims to make neotectonics characterization of the study area by making the morphological analysis of the drainage network and morphometric calculations for the recent tectonics detection. The area in question is located in a post-Miocene graben where it can be observed geological and geomorphological hazards and environmental impacts from intense anthropogenic intervention. For the realization of this study was necessary research and survey of past data on the study area based on the data obtained through vectorization of topographic maps of Goiana and Tejucupapo on the scale of 1:25.000 with equidistance of 10 m curves level. Geoprocessing techniques were used for generation of cartographic products: hipsometric letters, slope and digital elevation model (DEM). Morphometric calculations applied to the neotectonic analysis were the Index Value Slope/Extension (RDE) and the index Reason Fund/Valley Height (RFAV). The results indicate a strong neotectonics influence in the drainage pattern of the area, as also evidenced anthropogenic interference present in the investigated area and its surroundings . Keywords: Graben of the Goiana River; neotectonics; anthropogenic interventions.

Caracterização geomorfológica e morfométrica do gráben do rio Goiana   Pernambuco (Geomorphological and morphometric characterization of Graben the Goiana river   Pernambuco)