Loading...
Publication
Região Centro de Portugal Continental: 150 anos de movimentos de vertente de origem hidro-geomorfológica
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 5.55 MB | Adobe PDF |
Advisor(s)
Abstract(s)
RESUMO: Este estudo dedica-se à análise dos movimentos de vertente
ocorridos na região Centro de Portugal Continental, entre 1865-2015.
Foram inventariadas ocorrências que resultaram da análise de trabalhos
académicos, atas, registos hemerográficos (como os que suportam a
base de dados Disaster) e observações de campo. A espacialização das
ocorrências permite observar que a maioria envolve materiais como
turbiditos, xistos, conglomerados e arenitos do Paleozóico, granitos e
outros granitóides de idades diferenciadas, e materiais jurássicos como
evaporitos, complexo vulcano-sedimentar e calcários. A maioria dos
registos com classificação tipológica associada, traduz movimentos do
tipo deslizamento translacional e fluxos. A espacialização das ocorrên cias permite observar uma clara concentração destas na NUT III Região
de Coimbra.
ABSTRACT: The study analyses the distribution of mass movement occurrences, for the Central region of mainland Portugal in the period 1865-2015. The inventory was supported on the analysis of academic papers, field observations and hemerographic records, such as those that support the Disaster database. The mapping allows to observe that most of mass movements occurs in materials such as turbidites, schists, conglomerates and sandstones of the Paleozoic, granites and other granitoids with diverse age, evaporates, volcanic-sedimentary materials and Jurassic limestone. Translational slide movements and flows are the most frequent type of mass movement, as interpreted or observed from the database sources. The mapping of occurrences also allows to observe a clear concentration of these in the NUT III Region of Coimbra, contrasting with the NUT III Beira Baixa, which has the lowest number of occurrences.
ABSTRACT: The study analyses the distribution of mass movement occurrences, for the Central region of mainland Portugal in the period 1865-2015. The inventory was supported on the analysis of academic papers, field observations and hemerographic records, such as those that support the Disaster database. The mapping allows to observe that most of mass movements occurs in materials such as turbidites, schists, conglomerates and sandstones of the Paleozoic, granites and other granitoids with diverse age, evaporates, volcanic-sedimentary materials and Jurassic limestone. Translational slide movements and flows are the most frequent type of mass movement, as interpreted or observed from the database sources. The mapping of occurrences also allows to observe a clear concentration of these in the NUT III Region of Coimbra, contrasting with the NUT III Beira Baixa, which has the lowest number of occurrences.
Description
Keywords
Região Centro de Portugal Movimentos de massa Unidades litostratigráficas Perdas Danos Central region Mass movements Litostratigraphic units Losses Damages
Citation
Barros et al. 2020, ‘Região Centro de Portugal Continental: 150 anos de movimentos de vertente de origem hidro-geomorfológica´, Comunicações Geológicas, vol. 107, nº 1 (especial), pp. 123-127.
Publisher
LNEG - Laboratório Nacional de Energia e Geologia