http://www.cnr.it/ontology/cnr/individuo/prodotto/ID273193
Relação entre movimentos de vertente e a morfo-estrutura na bacia hidrográfica da Tornada (sector Centro-Oeste de Portugal) (Contributo in atti di convegno)
- Type
- Label
- Relação entre movimentos de vertente e a morfo-estrutura na bacia hidrográfica da Tornada (sector Centro-Oeste de Portugal) (Contributo in atti di convegno) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Alternative label
C. Henriques (1) , M. Cardinali (2), P. Reichenbach (2), M. Santangelo (2), F. Guzzetti (2), J. L. Zêzere (1) (2010)
Relação entre movimentos de vertente e a morfo-estrutura na bacia hidrográfica da Tornada (sector Centro-Oeste de Portugal)
in V Congresso Nacional de Geomorfologia, Porto, 8-11 Dicembre 2010
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- C. Henriques (1) , M. Cardinali (2), P. Reichenbach (2), M. Santangelo (2), F. Guzzetti (2), J. L. Zêzere (1) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://riskam.ul.pt/images/pdf/VCNG_S2.4.pdf (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) Centro de Estudos Geograficos, University of Lisbon, Lisboa, Portugal.
(2) CNR-IRPI, Via della Madonna Alta 126, 06128 Perugia, Italy. (literal)
- Titolo
- Relação entre movimentos de vertente e a morfo-estrutura na bacia hidrográfica da Tornada (sector Centro-Oeste de Portugal) (literal)
- Abstract
- This paper presents the relationships between the geological and structural settings and the distribution of slope
movements in the Tornada river basin (107 km2
), in Central western Portugal. This basin was chosen for its geological
and tectonic features and for the abundance of slope movements. The study area is situated in a dissected old
quaternary coastal plateau with an evident syncline structure, where crop out mainly upper Jurassic sandstones and
claystones. A detailed structural-geological map at 1:10 000 scale and a detailed landslide inventory map were
prepared through the interpretation of stereoscopic aerial photographs and extensive field surveys. The landslides
were classified according to the type of movement into shallow and deep-seated failures (mainly translational), and
the relative age into recent and old. The distribution of the landslides and their relationship with lithology and bedding
attitude were studied considering in particular: i) the presence of weak lithological layers; ii) the attitude of planar and
continuous bedding planes dipping towards the free-face of slope; iii) the presence of hydrogeological conditions
favorable to slope instability; and iv) the occurrence of normal faults. The relationship between structural settings,
geological information and landslides was studied in order to understand the factors that mainly explain the instability
conditions of the area. (literal)
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