Landslides Zonation Hazard: relation between geological structures and landslides occurrence in hilly tropical regions of Brazil
Document title: Landslides Zonation Hazard: relation between geological structures and landslides occurrence in hilly tropical regions of Brazil
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000417591
ISSN: 0001-3765
Authors: 1
1
2
1
1
Institutions: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Geociencias e Ciencias Exatas, Rio Claro, Sao Paulo. Brasil
2Instituto de Pesquisas Tecnologicas do Estado de Sao Paulo, Sao Paulo. Brasil
Year:
Season: Dic
Volumen: 89
Number: 4
Pages: 2609-2624
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract This paper presents a new approach of landslides zonation hazard studies, based on an integrated study of structural data along with geomorphological and external factors, in a hilly regions of Brazil, covered by a tropical humid rain-forest, called Serra do Mar. The Serra do Mar consists of a hilly region along the east coast of Brazil, with high slopes and many geological structures in a gneiss - migmatitic terrain. In contrast to traditional approaches, this method proposes that structural data (foliation, fractures and bedding planes) and its relation with the slope geometry, is important to be consider in the landslide zonation hazard, along with declivity, relative relief, soil and rock properties, land use and vegetation cover and hydrogeological and climate factors. Results show that slopes with high hazard have the same dip direction of geological structures. Landslide zonation hazard using structural data contributes to a better understanding of how these structures, preserved in tropical residual soils, influence on slope stability and generates landslides
Disciplines: Geociencias
Keyword: Geología,
Selva tropical,
Geomorfología,
Estructuras geológicas,
Deslizamientos de tierra,
Zonas de riesgo
Keyword: Geology,
Tropical rain forest,
Geomorphology,
Geological structure,
Landslides,
Risk zones
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