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Incerteza associada à avaliação de suscetibilidade a movimentos de vertente des...

Assessment of Urban Subsidence in the Lisbon Metropolitan Area (Central-West of...

The Lisbon metropolitan area (LMA, central-west of Portugal) has been severely affected by different geohazards (flooding episodes, landslides, subsidence, and earthquakes) that have generated considerable damage to properties and infrastructures, in the order of millions of euros per year. This study is focused on the analysis of subsidence, as related to urban and industrial activity. Utilizing the A-DInSAR d...

Determinação dos tempos de evacuação pedestre da população exposta a movimentos...

As regiões de montanha são áreas suscetíveis à ocorrência de movimentos de vertente com velocidades consideráveis. Neste contexto, o desenvolvimento urbano nestas áreas provoca um aumento da exposição da população, estruturas e infraestruturas a este tipo de perigo, o que frequentemente conduz a perdas de vidas e a graves impactos socioeconómicos. No presente trabalho, pretende-se identificar os edifícios em ri...

Application of dynamic modelling to identify buildings at risk and pedestrian t...

Debris flows are one of the most hazardous types of landslides in mountain regions. In the upper part of the Zêzere valley (Serra da Estrela, Portugal) several debris flows events occurred in the last 200 years, some of them causing loss of lives and material damages. In this work, a methodology for pedestrian evacuation modelling, in a debris flow hazard scenario, was implemented. A dynamic run-out model was u...

BeSafeSlide – A Landslide early warning soft technology prototype to improve co...

As observed worldwide during the last decades, landslides are one of the deadliest natural hazards in mainland Portugal and Azores archipelago being responsible for significant direct and indirect societal and economic losses, justifying the implementation of a landslide early warning system at the regional scale. The BeSafeSlide project aims to develop and implement a soft technology/low-cost prototype for pre...

Road network exposure, connectivity and hierarchy as input to assess landslide ...

From the territorial land use planning perspective new urban areas have been safeguarded during the last decades by the Portuguese regulation and practice that consider land use restrictions on landslide hazard prone areas. Nevertheless, the fatalities due to landslides did not reduce in number, mostly due to the occurrence of rapid shallow landslides, affecting people inside buildings and more recently, inside...

Landslides in a changing climate: assessment of hazard and exposure in the Arrá...

This work aims to assess the landslide hazard, nowadays and at the end of the 21st century, considering the SSP2-4.5 and SSP5-8.5climate change scenarios. The exposure of residential buildings, roads and strategic equipment to landslide hazard is also assessed. The study area is a small alpine orogenic chain – the Arrábida - characterised by a complex geomorphology, developing along 35 km in the southern part o...

On the physical vulnerability of buildings exposed to landslide hazard: applica...

This work aims to assess the physical vulnerability of buildings (PVB) exposed to landslides that can be triggered by rainfall and earthquake in the Lisbon metropolitan area (LMA). Susceptibility to landslides triggered by rainfall was assessed with a statistical model (Information Value), using seven predisposing factors: slope, aspect, geology, curvature, land use, and topographic wetness and position (TPI) i...

Assessing exposure changes to landsliding in Lisbon Metropolitan Area

he Lisbon Metropolitan Area (LMA) is a Portuguese administrative region that encompasses 18 municipalities and is characterized by a high risk of landsliding as a consequence of the high susceptibility and exposure of people and assets. Therefore, this work aimed to assess the evolution of exposure levels to landsliding in each municipality of LMA, based on three timesteps (1995, 2011 and 2018), through the fol...

Does the Updating of Landslides Inventories Have a Relevant Impact on the Lands...

Landslide inventories are essential for developing an accurate susceptibility assessment. However, the complete and systematic updating of these inventories is a time consuming and challenging task. In this study, we aimed to determine if the temporal updating of historical landslide inventories improves the landslide susceptibility models and if the size of the study area plays a relevant role in the decision ...