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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Inunda??es urbanas no semiarido nordestino: o caso da cidade de Pau dos Ferros - RN

Costa, Franklin Roberto da 11 February 2010 (has links)
Made available in DSpace on 2014-12-17T15:54:54Z (GMT). No. of bitstreams: 1 FranklinRC_1-40_DISSERT.pdf: 4778584 bytes, checksum: 833dd7351e4035de91c5156cea21d97d (MD5) Previous issue date: 2010-02-11 / Universidade Estadual do Rio Grande do Norte / The Apodi river basin, particularly within the snippet that crosses Pau dos Ferros - RN city, place anthropogenic actions that interfere in the dynamic environment by modifying the local landscape. The reflection of these actions can be seen in the floods that occur in rainy periods (February to may) virtually every year in the city. It is important to stress that the project of integration of the waters of the San Francisco basin with the northern basin of Northeastern will perennial the main channel of the river basin, and generate greater impacts in the region. This work sought to define a methodology able to delimit areas susceptible to flooding in cities of semiarid Northeast based on the Pau dos Ferros RN city. The dissertation is divided into two chapters and introduction. The introduction presents a theoretical frame based on discussion of the concept of risk, their main characteristics and subdivisions; floods; geotecnologies; Apodi River basin; municipal data Pau dos Ferros RN and design integration of Francisco basin with the northern basins Northeast. The first chapter evaluates the urban expansion process between 1987 and 2008, delimiting the flood areas and analyzes the relationship between urban growth and retention areas. The second chapter identifies the flood risk areas in the Pau dos Ferros city. The methodology used was based on tools of geographic information system GIS from software SPRING/INPE 5.1, as well as bibliographical, satellite images, aerial photographs and field activities. The results obtained enabled view the rapid expansion of the urban area of Pau dos Ferros, which has doubled in a period of 22 years. The population density checks with greater intensity in South-central portion of the city, in flood areas and not flood (Cap. 01). It was noted also that some neighborhoods along the River Apodi are susceptible to more instances of flooding ranging from minimum to maximum, while in neighborhoods near the Riacho Cajazeiras floods occur to a lesser extent because of altimetry higher and lower water volume. (Cap. 02). It is expected that this work will help in the preparation of flood risk municipal map subsidising managers in implementing public policies targeted to the softening of urban flood-related issues in Pau dos Ferros RN and serve as a model for mapping of other cities with similar characteristics analyzed in this work / A Bacia Hidrogr?fica do Rio Apodi, particularmente no trecho que atravessa a cidade de Pau dos Ferros RN, vem sofrendo a??es antr?picas que interferem na din?mica ambiental, modificando a paisagem local. O reflexo destas a??es pode ser visto nas inunda??es que ocorrem nos per?odos chuvosos (fevereiro a maio) praticamente todos os anos na cidade. ? importante destacar que o Projeto de Integra??o das ?guas da Bacia do S?o Francisco com as bacias do Nordeste Setentrional perenizar? o canal principal da Bacia do Rio Apodi, podendo gerar impactos ainda maiores na regi?o. O presente trabalho buscou definir uma metodologia capaz de delimitar ?reas suscept?veis a inunda??o em cidades do semiarido nordestino tendo como base a cidade de Pau dos Ferros RN. A disserta??o est? dividida em introdu??o e dois cap?tulos. A introdu??o apresenta um referencial te?rico baseado na discuss?o a respeito do conceito de risco, suas principais caracter?sticas e subdivis?es; inunda??es; geotecnologias; a bacia hidrogr?fica do Rio Apodi; dados municipais de Pau dos Ferros RN e o Projeto de Integra??o da Bacia do S?o Francisco com as Bacias do Nordeste Setentrional. O primeiro cap?tulo avalia o processo de expans?o urbana entre 1987 e 2008, delimita as ?reas de inunda??o e analisa a rela??o entre ?reas inund?veis e crescimento urbano. O segundo cap?tulo identifica as ?reas de risco de inunda??o na cidade de Pau dos Ferros. A metodologia utilizada baseou-se nas ferramentas do Sistema de Informa??es Geogr?ficas SIG a partir do software SPRING/INPE 5.1, al?m de pesquisa bibliogr?fica, imagens de sat?lite, fotografias a?reas e atividades em campo. Os resultados obtidos permitiram visualizar a r?pida expans?o da ?rea urbana de Pau dos Ferros, que duplicou em um per?odo de 22 anos. O adensamento populacional verifica-se com maior intensidade na por??o centro-sul da cidade, em ?reas inund?veis e n?o inund?veis (cap.01). Observou-se tamb?m que alguns bairros ao longo do Rio Apodi s?o suscept?veis a maiores ocorr?ncias de inunda??es variando do grau m?nimo ao m?ximo, enquanto que nos bairros pr?ximos ao Riacho Cajazeiras as inunda??es ocorrer?o em menor grau devido altimetria mais elevada e menor volume d ?gua. (cap.02). Espera-se que este trabalho contribua na elabora??o da carta de risco de inunda??o municipal, subsidiando os gestores na implementa??o de pol?ticas p?blicas voltadas para a ameniza??o dos problemas relacionados a inunda??o urbana em Pau dos Ferros RN e sirva como modelo para mapeamento de outras cidades com caracter?sticas semelhantes a analisada neste trabalho

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