A5076951762- Landslides and related hazards
- Flood Risk Assessment and Management
- Disaster Management and Resilience
- earthquake and tectonic studies
- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- Risk and Safety Analysis
- Aeolian processes and effects
- Evacuation and Crowd Dynamics
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geological and Tectonic Studies in Latin America
- Infrastructure Resilience and Vulnerability Analysis
- Hydrology and Watershed Management Studies
- Seismic Imaging and Inversion Techniques
- Transportation Planning and Optimization
- Environmental and Social Impact Assessments
- Geology and Paleoclimatology Research
- Wind and Air Flow Studies
- Species Distribution and Climate Change
- Occupational Health and Safety Research
- Geological and Geophysical Studies Worldwide
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Advanced SAR Imaging Techniques
- Cryospheric studies and observations
University of Geneva
2009-2024
Flood hazard assessment is at the core of flood risk management. In order to develop an efficient assessment, it primary importance have a well‐defined scenario encompassing all processes that could occur during event. Understanding and assessing these requires meteorological, topographical land‐use data as well historical observations. Nowadays, delineation based upon hydrological hydraulic modelling, ground collection, remote sensing. Despite advantages tools, they also present some...
Abstract. Post-event impact assessments (PEIA) are essential to elucidate disasters’ drivers and better anticipate future events. The 2021 Tajogaite eruption of Cumbre Vieja (La Palma, Spain) demonstrated the various orders due compound volcanic products (i.e., lava, tephra, gas) affecting a highly interconnected low redundant infrastructure, typical insular environments. Using forensic approach, we discretise causal order cascading impacts, from physical damage (first order) loss...
Knowledge of the spatio-temporal changes in characteristics and distribution subsurface fluids is key to properly addressing important societal issues, including: sustainable management energy resources (e.g., hydrocarbons geothermal energy), water resources, assessment hazard volcanic eruptions). Gravimetry highly attractive because it can detect mass, thus providing a window into processes that involve deep fluids. However, high cost operating features associated with current...
The ever-increasing population living near active volcanoes highlights the need for implementation of effective risk reduction measures to save lives and reduce impact volcanic unrest eruptions. To help identify systems associated with potential high prioritize strategies, we introduce a new Volcanic Risk Ranking (VRR) methodology that integrates hazard, exposure, vulnerability as factors increase risk, resilience factor reduces risk. Here present description using Mexican case study, while...
Abstract The simultaneous or sequential occurrence of several hazards—be they natural anthropogenic sources—can interact to produce unexpected compound hazards and impacts. Since success in responding volcanic crises is often conditional on accurate identification spatiotemporal patterns hazard prior an eruption, ignoring these interactions can lead a misrepresentation misinterpretation the risk and, during emergencies, ineffective management priorities. 2021 eruption Tajogaite volcano...
Abstract. Fallout of ballistic blocks and bombs ejected from eruptive vents represents a well-known hazard in areas proximal to volcanoes (mostly <5 km the vent). However, fallout large clasts sedimenting plume margins that extend medial have potential produce severe injuries people cause damage infrastructure, is often overlooked. Recent events at Mount Etna (Italy) provide clear example where large-clast (>5 cm) has posed real threat both many visitors reaching summit area local and,...
Abstract. Information gathered on past flood events is essential for understanding and assessing hazards. In this study, we present how citizen science can help to retrieve information, particularly in areas with scarce or no authoritative measurements of events. The case study located Yeumbeul North (YN), Senegal, where impacts represent a growing concern the local community. This area lacks records extent water depth as well information chain causative factors. We developed framework using...
Risk assessments in volcanic contexts are complicated by the multi-hazard nature of both unrest and eruption phases, which frequently occur over a wide range spatial temporal scales. As an attempt to capture multi-dimensional dynamic risk, we developed integrAteD VolcanIc risk asSEssment (ADVISE) model that focuses on two dimensions authorities have address context: short-term emergency management long-term management. The output assessment ADVISE is expressed terms potential physical,...
Volcanic Risk Ranking (VRR) methods have been developed worldwide as a way to hierarchize the volcanic systems and help target strategies for risk reduction. Such hierarchization is especially important in areas characterized by large number of active volcanoes but limited resources. This case Latin America, where populations live nearby almost 300 volcanoes. Here we assess America with at least one eruption last 1,000 years based on VRR strategy presented companion paper that accounts 4...
During explosive volcanic eruptions, large quantities of tephra can be dispersed and deposited over wide areas. Following deposition, subsequent aeolian remobilisation ash potentially exacerbate primary impacts on timescales months to millennia. Recent events (e.g., following eruptions Cordón Caulle 2011; Chile, Eyjafjallajökull 2010, Iceland) have highlighted this a recurring phenomenon with consequences for human health, economic sectors, critical infrastructure. Consequently, scientists...
This paper presents a 2D numerical study of the seismic response deep embanked sediment-filled valley (Rhone valley, Switzerland) to incident SH and SV waves. The modeling is performed with program developed by Pedersen et al. (1995), based on IBEM technique. exhibits variation in subsurface geometry. Therefore, three representative cross-sections are considered order investigate influence symmetric asymmetric morphology response. Comparison between 1D shows that both resonant frequencies...
Understanding the complexity of future volcanic impacts that can be potentially induced by large variability hazards and multiple dimensions vulnerability increasingly interdependent interconnected societies, requires an in-depth analysis past events. A structured inclusive post-event impact assessment framework is proposed applied for evaluation damage disruption on critical infrastructures caused eruption Cordón Caulle volcano (Chile) in 2011–2012. This built forensic disasters combined...
We present here a brief overview of some findings and preliminary results obtained after almost three years systematic monitoring active volcanic areas in Africa by means differential synthetic aperture radar interferometry (InSAR). With database rich more than 400 SAR scenes Fogo (Cape Verde), Ol Doinyo Lengai (Tanzania), Nyiragongo-Nyamulagira (DR Congo) Mount Cameroon volcanoes, we processed 2000 interferograms among which could detect significant major geophysical processes: the first...
Abstract. The Central Volcanic Zone of the Andes (CVZA) extends from southern Peru, through altiplano Bolivia, to Puna de Atacama northern Chile and Argentina, between latitudes 14–28° S Andean cordillera, with altitudes raising up more than 4,000 m above sea level. Given large number active volcanoes in this area, which are often located close both urban areas critical infrastructure, prioritization volcanic risk reduction strategies is crucial. However, identification hazardous challenging...
Although dominantly effusive, the 2021 Tajogaite eruption from Cumbre Vieja volcano (La Palma, Spain) produced a wide tephra blanket over 85 days of activity. About one month after onset, clean-up operations were implemented to mitigate impact load on primary buildings. Here, we present post-event assessment 764 buildings, which expands our empirical knowledge building vulnerability fallout include impacts long-lasting eruptions. Field observations are analyzed in perspective existing...
Flooding has emerged lately as a major threat for poor people in the suburban area of Dakar (Senegal), densely populated area.In this region, flood events are mainly controlled by rainfall intensity and groundwater level fluctuations.To assess risk at neighbourhood level, accurate data on extent, exposure vulnerability is required.The objective present study to obtain these combining remote sensing local knowledge.Field work were collected through interviews with inhabitants.About 500...
Abstract. Evacuation planning and management represent a key aspect of volcanic crises because they can increase people's protection as well minimize potential impacts on the economy, properties infrastructure affected area. We present an agent-based simulation tool that assesses effectiveness different evacuation scenarios using small island Vulcano (southern Italy) case study. Simulation results show overall time needed to evacuate people should be analysed together with percentage...