A5019162534- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Seismology and Earthquake Studies
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- Geological and Tectonic Studies in Latin America
- Geological and Geophysical Studies
- High-pressure geophysics and materials
- Earthquake Detection and Analysis
- Landslides and related hazards
- Seismic Waves and Analysis
- Atmospheric chemistry and aerosols
- Geological formations and processes
- Atmospheric aerosols and clouds
- Tropical and Extratropical Cyclones Research
- Cryospheric studies and observations
- Seismic Imaging and Inversion Techniques
- Flood Risk Assessment and Management
- Arctic and Antarctic ice dynamics
- Scientific Computing and Data Management
- Air Quality and Health Impacts
- Geophysics and Gravity Measurements
- Anomaly Detection Techniques and Applications
- Reservoir Engineering and Simulation Methods
- Methane Hydrates and Related Phenomena
Université de Toulouse
2025
Centre National de la Recherche Scientifique
2008-2024
Centre de Physiopathologie de Toulouse-Purpan
2024
Université Toulouse III - Paul Sabatier
2021-2024
Institut de Recherche pour le Développement
2021-2024
Géosciences Environnement Toulouse
2017-2023
Observatoire Midi-Pyrénées
2017-2023
Institut de physique du globe de Paris
2008-2021
Université Paris Cité
2011-2020
Centre Hospitalier Universitaire de Martinique
2011-2019
Abstract. Ice particle activation and evolution have important atmospheric implications for cloud formation, initiation of precipitation radiative interactions. The initial formation ice by heterogeneous nucleation requires the presence a nucleating seed, an ice-nucleating (INP), to facilitate its first emergence. Unfortunately, only few long-term measurements INPs exist, as result, knowledge about geographic seasonal variations INP concentrations is sparse. Here we present data from nearly...
Research Article| August 01, 2001 How many Pacific hotspots are fed by deep-mantle plumes? Valérie Clouard; Clouard 1Jeune Equipe Terre-Océan, Université de la Polynésie Française, B.P. 6570, Faaa, French Polynesia Search for other works this author on: GSW Google Scholar Alain Bonneville 2UMR Géosciences Marines, Institut Physique du Globe, 4 place Jussieu, 75005 Paris, France Author and Article Information Publisher: Geological Society of America Received: 20 Nov 2000 Revision 26 Mar...
After the January 12, 2010, Haiti earthquake, we deployed a mainly offshore temporary network of seismologic stations around damaged area.The distribution recorded aftershocks, together with morphotectonic observations and mainshock analysis, allow us to constrain complex fault pattern in area.Almost all aftershocks have N-S compressive mechanism, not expected left-lateral strike-slip mechanism.A first-order slip model shows N264°E north-dipping plane, major component strong reverse...
Abstract The Lesser Antilles arc is only one of two subduction zones where slow‐spreading Atlantic lithosphere consumed. Slow‐spreading may result in the being more pervasively and heterogeneously hydrated than fast‐spreading Pacific lithosphere, thus affecting flux fluids into deep mantle. Understanding distribution seismicity can help unravel effect on geodynamic seismogenic processes. However, a detailed view local across whole zone lacking. Using temporary ocean‐bottom seismic network we...
ABSTRACT The Hunga Tonga Ha’apai eruption of January 15th, 2022, was a rare geological event, resulting in atmospheric pressure waves being recorded around the world, along with sea level fluctuations. This research aims to analyze tsunami and observed Caribbean adjacent regions, which were generated by this eruption. These kinds perturbations are uncommon have not been seen many occurrences, let alone global implications. Modern instrumentation including both barometers stations, provided...
Abstract We explored the submarine portions of Enriquillo–Plantain Garden Fault zone ( EPGFZ ) and Septentrional–Oriente SOFZ along Northern Caribbean plate boundary using high‐resolution multibeam echo‐sounding shallow seismic reflection. The bathymetric data shed light on poorly documented or previously unknown fault zones running over 200 km between Haiti Jamaica 300 Dominican Republic Cuba ). primary plate‐boundary structures are a series strike‐slip segments associated with pressure...
We propose a multiscale method to map the spatial variations of com- pleteness magnitude Mc earthquake catalogs. The Gutenberg-Richter law describ- ing frequency-magnitude distribution (FMD) might not hold over entire range, and small areas may exhibit specific type seismicity, especially in volcanotectonic contexts. For these reasons, any scaling relation should be obtained by adapting dimension studied zone range event magnitude. Here, we associate ranges larger magnitudes with increasing...
Geophysical and geological data from the North Mozambique Channel acquired during 2020–2021 SISMAORE oceanographic cruise reveal a corridor of recent volcanic tectonic features 200 km wide 600 long within north Comoros Archipelago. Here we identify describe two major submarine tectono-volcanic fields: N’Droundé province oriented N160°E Grande-Comore Island, Mwezi N130°E Anjouan Mayotte Islands. The presence popping basaltic rocks sampled in suggests post-Pleistocene activity. geometry...
Research Article| November 01, 2002 Arago Seamount: The missing hotspot found in the Austral Islands Alain Bonneville; Bonneville 1Centre National de la Recherche Scientifique, Géosciences Marines, Institut Physique du Globe, 4 place Jussieu, Paris, France Search for other works by this author on: GSW Google Scholar Raymond Le Suavé; Suavé 2Centre Département Français pour l'Exploitation Mer, BP 70, 29280 Plouzané, Laurence Audin; Audin 3Université Paul Sabatier, le Développement, 38, rue...
We present evidence for an ancient and voluminous subaerial landslide of the southern flank Tahiti, Society Islands. During a marine geophysical survey in 1996, submarine mass wasting deposits were mapped as far 60 km from shore island. Acoustic imagery reveals surface 2950 km² debris avalanche hummocky terrain. Based on bathymetric data, volume is estimated to be 1150 km³. In comparison with Hawaiian other oceanic island landslides, it can classified giant, rapid cataclysmic event. Tahiti...
Earthquake risk reduction approaches classically apply a top-down model where scientific information is processed to deliver mitigation measures and policies understandable by all, end-users are shielded from the initial, possibly complex, information. Alternative community-based models exist but rarely applied at large scale rely on valuable, non-scientific, observations experiences of local populations. In spite efforts based both approaches, changes in behavior or slow even non-existent,...
Abstract The boundary between the Caribbean and North American plates in Hispaniola region is northwestern termination of plate subduction evolving from westward Lesser Antilles to southward Greater oblique collision against Bahamas platform Cuba. We analyze P waveforms recorded by 27 broadband seismic temporary stations deployed during Trans-Haiti project. Seismicity network June 2013 2014 used locate earthquakes. A total 514 events were identified with magnitudes ranging 1 4.5. Twenty-six...
ABSTRACT Understanding the processes that may be at origin of major earthquakes in subduction zones is highly challenging, especially case slowly converging areas such as Lesser Antilles zone. Our study reveals a recorded increase seismicity rate and cumulative seismic moment over last two decades offshore Martinique island and, particularly, presumed rupture area historical 1839 earthquake. This sustained shared between extensive intermediate depth activity since 2007 Mw 7.4 earthquake...
Instrumental catalogues of earthquakes in the subduction zone Lesser Antilles are produced by local observatories and International Seismological Centre. But none these merge all arrival times first regional phases available; addition, they have a magnitude completeness relatively high for entire area. As part Data Centre project, we unified catalogue known from 1972 to 2012, with optimal constraints on hypocentre locations. We re-evaluated hypocentres method used probabilistic improving...
Although outer rise seismicity is less common than interplate in subduction zones, a significant level of has occurred between the Nazca trench and Juan Fernandez Ridge, central Chile, during past 20 years. We first study 9 April 2001 (Mw = 7.0) event determine its focal mechanism, depth, source time function by body‐waveform inversion from teleseismic broadband data. The results indicate tensional faulting upper part mechanical lithosphere. Its strike (41°) similar to those observed events...
Abstract Flank destabilizations are common processes in the life of a volcano. Apart from giant landslides with recurrence times tens thousands years and whose deposits identified bathymetry around islands, less voluminous but more frequent erosional contribute significantly to morphological development topography. In this paper, we present detailed description landslide sequence that occurred 2009 2010 on western flank Montagne Pelée volcano, originating at Samperre cliff. This is...