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标题：TÉCNICAS DE GEOPROCESSAMENTO E MORFOMETRIA APLICADOS NA DETECÇÃO DE ATIVIDADES NEOTECTÔNICAS NO GRUPO BARREIRAS, ESTUDO DA BACIA HIDROGRÁFICA DO RIO GURUJI (PB) (Geoprocessing morphometry techniques and applied in the detection...)
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作者：Maria Emanuella Firmino BARBOSA ; Max FURRIER
期刊名称：Revista ACTA Geográfica
印刷版ISSN：1980-5772
电子版ISSN：2177-4307
出版年度：2012
卷号：6
期号：11
页码：117-131
DOI：10.5654/actageo2012.0611.0008
出版社：Editora da Universidade Federal de Roraima (EdUFRR)
摘要：The present study also aims to demonstrate evidence of neotectonics in the Guruji river watershed through morphometric analysis and cartographic products. The study area is located on the southern coast of Paraiba state, northeastern Brazil. The methodology used to detect influences neotectônicas consists in the analysis and interpretation of numerical data obtained in the topographic charts and Digital Elevation Model (DEM) and its derivatives (slope chart, hypsometric chart and 3D model). The morphometric calculation applied to neotectonics analysis was Valley Floor / Valley Height Ratio. The results obtained from the analysis of the products showed that in the central portion of the area there is a strong structural control on the right bank tributaries of the Guruji river, where they have a marked altimetric unevenness, high steep slopes, and deep fluvial cuts and they are more numerous and enlarged than the left bank tributaries. At the end of the course of the river Guruji, there is a steep slant of approximately 90º, where its direction changes abruptly from West-East to South-North.
关键词：Neotectonics; Grupo Barreiras; Guruji river