The analysis of the morphological features can be framed in different temporal and spatial scales... more The analysis of the morphological features can be framed in different temporal and spatial scales, depending on the specific objectives and methodologies of the various scientific fields that find in them a valuable source of information. The inventory and assessment of the geomorphological heritage may be based not exclusively in geophysical factors, but also in its contribution to the structuring of the biosphere, in its interrelation with other types of heritage or even in its potential for research or education purposes. In this article, we proceeded to the selection of a set of geomorphosites, at different scales, in Serra do Alvão (northern Portugal), seeking to demonstrate the importance of the broad lines of relief and intermediate and detailed landforms to the organization of the cultural landscape. Based on a questionnaire applied to a sample of 104 persons, it was intended to assess the value of the geomorphosites, concerning the scientific, preservation, use, cult...
Na região Noroeste de Portugal, as vertentes de maior declive das áreas montanhosas de substracto... more Na região Noroeste de Portugal, as vertentes de maior declive das áreas montanhosas de substracto granítico e xistento reúnem, frequentemente, características propícias à ocorrência de movimentos em massa, particularmente deslizamentos, fluxos de detritos e processos complexos. Entre os factores de ordem biogefísica que potenciam a probabilidade de ocorrência de movimentos em massa nestes relevos vigorosos destacam-se as suas características estruturais, geológicas e morfológicas. Incidindo sobre as especificidades resultantes deste contexto geomorfológico e climático, o presente trabalho pretende contribuir para o aperfeiçoamento da modelação computacional dos movimentos em massa e para um maior rigor na avaliação da susceptibilidade geográfica da sua ocorrência. Esta avaliação multi-factorial da susceptibilidade face aos movimentos em massa é precursora na investigação portuguesa ao nível da integração computacional sistematizada das formações superficiais, enquanto condicionante ...
Na paisagem cultural das montanhas do Noroeste de Portugal, a estrutura de socalcos nas vertentes... more Na paisagem cultural das montanhas do Noroeste de Portugal, a estrutura de socalcos nas vertentes constitui o principal marco de identidade. Por sua vez, a prática do regadio, assente em sistemas de rega tradicionais, constitui uma estratégia essencial ao desenvolvimento das actividades agro-pastoris nos diferentes tipos de socalcos. No contexto do estudo dos riscos, o conhecimento destas vulnerabilidades é fundamental. As propostas apresentadas podem enquadrar-se na prevenção de riscos geomorfológicos, de riscos climático-hidrológicos e de riscos de incêndios florestais.
After the devastating earthquake, tsunami and fires of 1755, the city of Lisbon was rebuilt as a ... more After the devastating earthquake, tsunami and fires of 1755, the city of Lisbon was rebuilt as a modern disaster resilient city, implementing strict planning controls and earthquake resistant construction technologies. This is reflected in the regular grid layout of the historic city, namely the Baixa Pombalina, and its built fabric. But the city has changed considerably since 1755. Through GIS mapping of the city, this study identifies the exposure of the built heritage of Lisbon Downtown to natural hazards including earthquake, tsunami, flood and landslide. It then highlights some of the changes that have occurred within the city’s landscape since 1755 and the potential impacts that these may have had on the ability of the city’s fabric to perform as designed. In particular, it focuses on the historic urban precinct of Baixa Pombalina, the heart of the rebuilt city and part of the tentative UNESCO World Heritage property of Lisbon. Although many studies have been undertaken to examine the seismic performance of the Pombaline buildings, few have examined the greater context in which the buildings exist and its potential impact on their performance. Will the buildings be able to withstand a similar event now or have they been compromised by the changes that have occurred in and around them? This study considers the vulnerability of the city’s historic structures and sites to various hazards and identifies areas of further research needed to enable the development of appropriate mitigation strategies to strengthen the resilience of the historic city.
The analysis of the morphological features can be framed in different temporal and spatial scales... more The analysis of the morphological features can be framed in different temporal and spatial scales, depending on the specific objectives and methodologies of the various scientific fields that find in them a valuable source of information. The inventory and assessment of the geomorphological heritage may be based not exclusively in geophysical factors, but also in its contribution to the structuring of the biosphere, in its interrelation with other types of heritage or even in its potential for research or education purposes. In this article, we proceeded to the selection of a set of geomorphosites, at different scales, in Serra do Alvão (northern Portugal), seeking to demonstrate the importance of the broad lines of relief and intermediate and detailed landforms to the organization of the cultural landscape. Based on a questionnaire applied to a sample of 104 persons, it was intended to assess the value of the geomorphosites, concerning the scientific, preservation, use, cult...
Na região Noroeste de Portugal, as vertentes de maior declive das áreas montanhosas de substracto... more Na região Noroeste de Portugal, as vertentes de maior declive das áreas montanhosas de substracto granítico e xistento reúnem, frequentemente, características propícias à ocorrência de movimentos em massa, particularmente deslizamentos, fluxos de detritos e processos complexos. Entre os factores de ordem biogefísica que potenciam a probabilidade de ocorrência de movimentos em massa nestes relevos vigorosos destacam-se as suas características estruturais, geológicas e morfológicas. Incidindo sobre as especificidades resultantes deste contexto geomorfológico e climático, o presente trabalho pretende contribuir para o aperfeiçoamento da modelação computacional dos movimentos em massa e para um maior rigor na avaliação da susceptibilidade geográfica da sua ocorrência. Esta avaliação multi-factorial da susceptibilidade face aos movimentos em massa é precursora na investigação portuguesa ao nível da integração computacional sistematizada das formações superficiais, enquanto condicionante ...
Na paisagem cultural das montanhas do Noroeste de Portugal, a estrutura de socalcos nas vertentes... more Na paisagem cultural das montanhas do Noroeste de Portugal, a estrutura de socalcos nas vertentes constitui o principal marco de identidade. Por sua vez, a prática do regadio, assente em sistemas de rega tradicionais, constitui uma estratégia essencial ao desenvolvimento das actividades agro-pastoris nos diferentes tipos de socalcos. No contexto do estudo dos riscos, o conhecimento destas vulnerabilidades é fundamental. As propostas apresentadas podem enquadrar-se na prevenção de riscos geomorfológicos, de riscos climático-hidrológicos e de riscos de incêndios florestais.
After the devastating earthquake, tsunami and fires of 1755, the city of Lisbon was rebuilt as a ... more After the devastating earthquake, tsunami and fires of 1755, the city of Lisbon was rebuilt as a modern disaster resilient city, implementing strict planning controls and earthquake resistant construction technologies. This is reflected in the regular grid layout of the historic city, namely the Baixa Pombalina, and its built fabric. But the city has changed considerably since 1755. Through GIS mapping of the city, this study identifies the exposure of the built heritage of Lisbon Downtown to natural hazards including earthquake, tsunami, flood and landslide. It then highlights some of the changes that have occurred within the city’s landscape since 1755 and the potential impacts that these may have had on the ability of the city’s fabric to perform as designed. In particular, it focuses on the historic urban precinct of Baixa Pombalina, the heart of the rebuilt city and part of the tentative UNESCO World Heritage property of Lisbon. Although many studies have been undertaken to examine the seismic performance of the Pombaline buildings, few have examined the greater context in which the buildings exist and its potential impact on their performance. Will the buildings be able to withstand a similar event now or have they been compromised by the changes that have occurred in and around them? This study considers the vulnerability of the city’s historic structures and sites to various hazards and identifies areas of further research needed to enable the development of appropriate mitigation strategies to strengthen the resilience of the historic city.
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