The aim of this study is to identify the landslide predisposing factors' combination using a bivariate statistical model that best predicts landslide susceptibility. The best model is one that has simultaneously good performance in terms of suitability and predictive power and has been developed using variables that are conditionally independent. The study area is the Santa Marta de Penaguião council (70 km2) l...
Na última década, os sistemas de informação Geográfica (siG) têm permitido a criação e o cruzamento de parâmetros de forma cada vez mais rápida e fiável, justificando o incremento das variáveis de entrada nos modelos de avaliação da susceptibilidade aos movimentos de vertente. neste contexto, a análise sensitiva aos modelos preditivos surge com o objectivo de aferir a importância relativa dos factores de predis...
SPATIAL DATA INTEGRATION IN GIS FOR LANDSLIDE SUSCEPTIBILITY PREDICTION. Improper land use is an important factor for the occurrence and intensification of natural hazards. Therefore, a correct hazard zonation is of extreme significance for the adequate planning of human activities. The main objective of this study, applied to a test site in the North of Lisbon (Fanhões-Trancão), is the application of a compreh...
THE PLEISTOCENE GLACIATION OF SERRA DO GERÊS (NORTHWEST PORTUGAL) - Studies made by Schmidt-Thomé (1973, 1978) and Coudé-Gaussen (1978, 1979, 1981) which put forward the explanation of a Pleistocene glaciation in the Gerês mountain gave rise to lively controversy. In order to clarify the problem, the authors of the present study selected two lines of research: 1)detailed geomorphologic mapping; and 2)laboratory...
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