Resumo

DOS SANTOS, Juciela Cristina; TOUJAGUEZ, Regla; QUEIROZ SILVA, Betânia  e  DA SILVA, Luciana Maria. Update of Geological Risk Mapping of the Mutange District in the Municipality of Maceió - AL, Brazil. Ser. correl. geol. [online]. 2017, vol.33, n.2, pp.1-10. ISSN 1666-9479.

The city of Maceió - AL, Brazil, performed in 2007, the Municipal Plan for Risk Reduction (MPRR) in order to identify areas susceptible to erosion and landslides in the city, owing to incentives of the Cities Mi-nistry, which has been implementing since 2003 a risk reduction national policy in precarious settlements. The occupation is associated to hillside with high slope in developed soils from sedimentary rocks, susceptible to accelerated erosion and landslide in the rainy season. These elements potentiated the choice of the Mutange neighborhood for this research. The monitoring of the occupation of those areas is a substantial factor in the prevention of risks as well as in the analysis of the vulnerability of dwellings that are in tops or bases of hillside and slopes. Thus, this work presents a pilot project to update the geological risk mapping of the area known as Grota da Borracheira in the Mutange neighborhood in Maceió / Alagoas. In the methodological sketch were used residences and family records, Digital Terrain Model (DTM) and the territorial registration with the codification of all the households and the families residing in that area. Thus, a geographic information system was created with all the cadastral information. The cadastral Update allowed a more precise identification of the dwelling numbers, since the count carried out by the PMRR was done through roofis restored from the aerial photographs. The results brought a new zoning of the risk categories in the registered area. Besides, the Identification of the most affected house-holds and dwellings that have already collapsed. The maps generated and the information related to them constitute essential management tools for the Maceió Civil Defense in the identification and prevention of risks as well as for further studies that identify solutions to contain the slopes that present the greatest risk.

Palavras-chave : Geological risk. Mapping. Territorial Cadaster. Territorial Administration..

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