Proposal of a geo-environmental zoning method based on Ottobasin compartmentalization

Autor(es)

Fontes, Silvana Brandao ^[1] ; Pejon, Osni Jose ^[1]

Afiliação do(s) autor(es)

^[1] USP, Escola Engn Sao Carlos, Dept Geotecnia, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bulletin of Engineering Geology and the Environment; v. 67, n. 4, p. 555-563, NOV 2008.
• Citações Web of Science: 3

Resumo

This paper proposes a new geo-environmental zoning method based on the hydrographic basin compartmentalization and codification technique known as the Ottobasin Method {[}Pfafstetter in Classificacauo de Bacias Hidrograificas-Metodologia de Codificacauo Rio de Janeiro, RJ. Departamento Nacional de Obras de Saneamento (DNOS), p 19, 1989]. A study was carried out in the Pardo River Basin, Sauo Paulo, Brazil. Ottobasins were characterized based on the rock substratum, unconsolidated materials, slope, drainage and landform. The percentage of each analyzed attribute was calculated and compared between the Ottobasins. A GIS-aided analysis was used to assess which Ottobasin should be subjected to further compartmentalization such that an acceptable level of homogeneity was reached. When an adequate level of compartmentalization is attained, the units are sufficiently homogeneous to allow for their use as geo-environmental units, ie as a tool for planning environmental protection/mitigation. (AU)

• Processo FAPESP: 98/15461-1 - Zoneamento geoambiental da bacia do Rio Pardo com vistas à potencialidade de problemas geoambientias, escala 1:100.000
• Beneficiário: Silvana Brandao Fontes
• Modalidade de apoio: Bolsas no Brasil - Doutorado