Geomorfologia urbana e mapeamento geomorfológico do município de João Pessoa – PB, Brasil

• Autor(a) principal: Barbosa, Tamires Silva
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/tede/8148
• topic: Formas de relevo atuais; Current relief forms; Relevo tecnogênico; Geomorfologia urbana; João Pessoa; Tecnogenic relief; Urban geomorphology; CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS

This work aims to do the analysis of urban geomorphology of the João Pessoa city and their natural and anthropogenic features, mapping the relief forms, distinguishing and counting the morphostructural and morphosculturals units, standards and landforms, the types of forms and current morphogenetic processes present in the João Pessoa city. The geomorphology studies of the city is very important, because it is an area in frank process of urban expansion including on inadequate relief forms, as strands of steep slopes and sedimentary geological structure, which is more easily eroded by the climate and anthropogenic actions as well as river valleys funds that are regularly hit by floods and sometimes cause flooding of houses installed on the banks of rivers. The techniques used in this research consisted of scanning of four topographic maps at 1: 25,000 scale and contour lines with equidistance of 10 m, covering the entire area of the city, thus obtaining more accurate topographic data due to the detail scale. With the scanned maps, they were vectorized and the informations were extracted and workeds in a GIS environment, thematic maps of hypsometry and slope were prepared and also the geological map of the area has been updated. Having these tools in the hands and with the realization of field work and satellite images and aerial photographs analysis, was developed geomorphological map. The geomorphological map, as well as serving as the basis of analysis of the research, also served as a synthesis of the results of it. After the analysis it was possible to obtain the quantification of surface geographic extent of each geologic unit present in the city, as well as the geomorphological units. In addition, they obtained morphometric data derived from analysis of the elaborated thematic maps and the mapping of the main technogenics relief forms of the city. It is discussed about the aspects of urban geomorphology and geological and geomorphological hazards caused by the occupation / urbanization of inappropriate relief forms to the occupation.