A5037975461- Landslides and related hazards
- Cryospheric studies and observations
- earthquake and tectonic studies
- Tree Root and Stability Studies
- Flood Risk Assessment and Management
- Soil erosion and sediment transport
- Geology and Paleoclimatology Research
- Seismology and Earthquake Studies
- Hydrology and Sediment Transport Processes
- Seismic Waves and Analysis
- Remote Sensing and Land Use
- Earthquake Detection and Analysis
- Geological formations and processes
- Fire effects on ecosystems
- Climate Change Communication and Perception
- Image Processing and 3D Reconstruction
- Conferences and Exhibitions Management
- Geological and Geochemical Analysis
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Atmospheric and Environmental Gas Dynamics
- Aeolian processes and effects
- Anomaly Detection Techniques and Applications
- Seismic Performance and Analysis
- Yersinia bacterium, plague, ectoparasites research
- Hydraulic Fracturing and Reservoir Analysis
Géosciences Environnement Toulouse
2020-2024
Observatoire Midi-Pyrénées
2020-2024
Université Toulouse III - Paul Sabatier
2020-2024
Institut de Recherche pour le Développement
2020-2024
Centre National de la Recherche Scientifique
2017-2024
Université de Toulouse
2023-2024
Institut National Polytechnique de Toulouse
2024
Centre National d'Études Spatiales
2023
GFZ Helmholtz Centre for Geosciences
2015-2021
United States Geological Survey
2021
Abstract Earthquake‐induced landslide (EQIL) inventories are essential tools to extend our knowledge of the relationship between earthquakes and landslides they can trigger. Regrettably, such difficult generate therefore scarce, available ones differ in terms their quality level completeness. Moreover, access existing EQIL is currently because there no centralized database. To address these issues, we compiled from around globe based on an extensive literature study. The database contains...
Research Article| October 01, 2015 Transient changes of landslide rates after earthquakes O. Marc; Marc 1Helmholtz Centre Potsdam, German Center for Geosciences (GFZ), Telegrafenberg, 14473 Germany2Institute Earth and Environmental Science, Potsdam University, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam-Golm, Germany Search other works by this author on: GSW Google Scholar N. Hovius; Hovius P. Meunier; Meunier 3École Normale Supérieure de Paris, Laboratoire Géologie, 75231 Paris CEDEX 5,...
Abstract We present a new, seismologically consistent expression for the total area and volume of populations earthquake‐triggered landslides. This model builds on set scaling relationships between key parameters, such as landslide spatial density, seismic ground acceleration, fault length, earthquake source depth, moment. To assess we have assembled normalized catalog inventories 40 shallow, continental earthquakes. Low landscape steepness causes systematic overprediction When this effect...
Abstract. In active mountain belts with steep terrain, bedrock landsliding is a major erosional agent. the Himalayas, driven by annual hydro-meteorological forcing due to summer monsoon and rarer, exceptional events, such as earthquakes. Independent methods yield erosion rate estimates that appear increase sampling time, suggesting rare, high-magnitude events dominate budget. Nevertheless, until now, neither contribution of earthquakes landslide nor proportion giant landslides have been...
Abstract. Rainfall-induced landslides are a common and significant source of damages fatalities worldwide. Still, we have little understanding the quantity properties landsliding that can be expected for given storm landscape, mostly because few inventories rainfall-induced caused by single storms. Here present six new comprehensive landslide event coincident with well identified rainfall events. Combining these datasets, two previously published study their statistical relations to...
Abstract. Inventories of individually delineated landslides are a key to understanding landslide physics and mitigating their impact. They permit assessment area–frequency distributions volumes, testing statistical correlations between physical parameters such as topographic gradient or seismic strong motion. Amalgamation, i.e. the mapping several adjacent single polygon, can lead potentially severe distortion statistics these inventories. This problem be especially in data sets produced by...
We provide a database of the coseismic geological surface effects following Mw 6.5 Norcia earthquake that hit central Italy on 30 October 2016. This was one strongest seismic events to occur in Europe past thirty years, causing complex ruptures over an area >400 km2. The originated from collaboration several European teams (Open EMERGEO Working Group; about 130 researchers) coordinated by Istituto Nazionale di Geofisica e Vulcanologia. observations were collected performing detailed field...
Abstract. Landslides are a key hazard in high-relief areas around the world and pose risk to populations infrastructure. It is important understand where landslides likely occur landscape inform local analyses of exposure potential impacts. Large triggering events such as earthquakes or major rain storms often cause hundreds thousands landslides, mapping landslide generated by these can provide extensive datasets locations. Previous work has explored characteristic locations triggered...
Abstract. We present an analytical, seismologically consistent expression for the surface area of region within which most landslides triggered by earthquake are located (landslide distribution area). This is based on scaling laws relating seismic moment, source depth, and focal mechanism with ground shaking fault rupture length assumes a globally constant threshold acceleration onset systematic mass wasting. The seismological assumptions identical to those recently used propose total volume...
Abstract Storm‐induced landslides are a common hazard, but the link between their spatial pattern and rainfall properties is poorly understood, mostly because hillslope stability modulated by under‐constrained, spatially variable topographic, hydrological, mechanical properties. Here, we use long‐term data set from Japanese radar network to discuss why landslide caused major typhoon correlates with event agrees normalized 10‐year return period amount, that is, anomaly. This may be explained...
Abstract Large, compressional earthquakes cause surface uplift as well widespread mass wasting. Knowledge of their trade‐off is fragmentary. Combining a seismologically consistent model earthquake‐triggered landsliding and an analytical solution coseismic displacement, we assess how the balance single earthquake sequences depends on fault size other geophysical parameters. We find that intermediate ( M w 6–7.3) may more erosion than uplift, controlled primarily by seismic source depth...
Abstract Shallow earthquakes frequently disturb the hydrological and mechanical state of subsurface, with consequences for hazard water management. Transient post‐seismic behavior has been widely reported, suggesting that recovery material properties (relaxation) following ground shaking may impact groundwater fluctuations. However, monitoring seismic velocity variations associated earthquake damage are often done assuming both effects independent. In a field site prone to highly variable...
Abstract Rainfall-induced landsliding is a global and systemic hazard that likely to increase with the projections of increased frequency extreme precipitation current climate change. However, our ability understand mitigate landslide risk strongly limited by availability relevant rainfall measurements in many prone areas. In last decade, satellite multisensor products (SMPP) have been proposed as solution, but very few studies assessed their adequately characterize events triggering...
« Scientifiques en Rébellion » (Scientists in Rebellion) is a collective of French scientists formed 2020 with the following goals: raising awareness seriousness scientific consensuses around climate change and ecological degradation, publicly denouncing inconsistencies greenwashing various actors. The also seeks to build balance power transform institutions companies meet environmental challenges, reorient higher education research. Since its...
Abstract. The large, shallow earthquakes at Northridge, California (1994), Chi-Chi, Taiwan (1999), and Wenchuan, China (2008), each triggered thousands of landslides. We have determined the position these landslides along hillslopes, normalizing for statistical bias. landslide patterns a co-seismic signature, with clustering ridge crests slope toes. A cross-check against rainfall-induced inventories seems to confirm that crest is specific seismic triggering as observed in previous studies....
Abstract. Linking together the processes of rapid physical erosion and resultant chemical dissolution rock is a crucial step in building an overall deterministic understanding weathering mountain belts. Landslides, which are most volumetrically important geomorphic process at these high rates erosion, can generate extremely very localised weathering. To elucidate how this works we have taken advantage uniquely intense landsliding, resulting from Typhoon Morakot, T'aimali River surrounds...
Abstract Tectonics and climate-driven surface processes govern the evolution of Earth’s topography. Topographic change in turn influences lithospheric deformation, but elementary scale at which this feedback can be effective is unclear. Here we show that it operates a single weather-driven erosion event. In 2009, typhoon Morakot delivered ~ 3 m precipitation southern Taiwan, causing exceptional landsliding erosion. This event was followed by step increase shallow (< 15 km depth)...
ABSTRACT In mountainous terrain, large earthquakes often cause widespread coseismic landsliding as well hydrological and hydrogeological disturbances. A subsequent transient phase with high landslide rates has also been reported for several earthquakes. Separately, subsurface seismic velocities are frequently observed to drop coseismically subsequently recover. Consistent various laboratory work, we hypothesize that the seismic-velocity changes track damage progressive recovery of landscape...
Abstract. Heavy-rainfall events in mountainous areas trigger destructive landslides, which pose a risk to people and infrastructure significantly affect the landscape. Landslide locations are commonly mapped using optical satellite imagery, but some regions their timings often poorly constrained due persistent cloud cover. Physical empirical models that provide insights into processes behind triggered landsliding require information on both spatial extent timing of landslides. Here we...
Abstract Monsoon rainfall triggers hundreds of landslides across Nepal every year, causing significant hazard and mass wasting. Annual inventories these have been mapped using multi‐spectral satellite images, but images are obscured by cloud cover during the monsoon, making it impossible to use them constrain landslide timing. We employ recently developed techniques derive individual timings from Sentinel‐1 for 579 in 2015, 2017, 2018, 2019 Nepal. this new timing information alongside data...
The topographic signature of a mountain belt depends on the interplay tectonic, climatic and erosional processes, whose relative importance changes over times, while quantifying these processes their rates at specific times remains challenge. eastern Andes central Bolivia offer natural laboratory in which such has been debated. Here, we investigate Rio Grande catchment crosses orthogonally orogen from Eastern Cordillera into Subandean Zone, exhibiting relief up to 5000 m. Despite an enhanced...
ABSTRACT During an earthquake, site effects can play important role in triggering landslides. To document the seismic response of steep hillslopes, we deployed broadband seismometers across a mountain ridge Taiwan, area with high earthquake-induced landslide hazard. The has simple, representative shape, and landslides have previously occurred there. Our seismometer array recorded continuously during more than 1 yr, both ambient-noise regional moderate earthquakes as sources. Processing...
A growing portion of scientists realises the need to not only alert about climate change, but also change their professional practices. range tools have emerged promote more sustainable activities, yet many struggle go beyond simple awareness-raising create concrete transition actions. Here we propose a game-based support system MaTerre180’ , which has been designed build scenarios greenhouse gas (GHG) emission reductions in academic community. After providing common scientific background...