A5061347772- Synthetic Aperture Radar (SAR) Applications and Techniques
- Landslides and related hazards
- earthquake and tectonic studies
- Cryospheric studies and observations
- Geophysics and Gravity Measurements
- Geophysical Methods and Applications
- Rock Mechanics and Modeling
- Coastal and Marine Dynamics
- Soil Moisture and Remote Sensing
- Earthquake Detection and Analysis
- Satellite Image Processing and Photogrammetry
- Seismic Waves and Analysis
- Remote Sensing and LiDAR Applications
- Structural Health Monitoring Techniques
- Ocean Waves and Remote Sensing
- Maritime and Coastal Archaeology
- Methane Hydrates and Related Phenomena
- Geological and Geochemical Analysis
- Geological and Geophysical Studies
- Atmospheric and Environmental Gas Dynamics
- Geological and Geophysical Studies Worldwide
- Marine and environmental studies
- Geological Modeling and Analysis
- Seismology and Earthquake Studies
- Geochemistry and Geologic Mapping
Bureau de Recherches Géologiques et Minières
2015-2024
Gouvernance, Risque, Environnement, Développement
2009-2019
United States Geological Survey
2018
Icelandic Meteorological Office
2016
Politecnico di Milano
2004
Tele-Rilevamento Europa (Italy)
2004
Université Laval
1998
Continuous geodetic measurements in landslide prone regions are necessary to avoid disasters and better understand the spatiotemporal kinematic evolution of landslides. The detection characterization landslides high alpine environments remains a challenge associated with difficult accessibility, extensive coverage, limitations available techniques, complex nature process. Recent studies using space-based observations especially Persistent Scatterer Interferometry (PSI) techniques integration...
SUMMARY On 10 May 2018, an unprecedented long and intense seismic crisis started offshore, east of Mayotte, the easternmost Comoros volcanic islands. The population felt hundreds events. Over course 1 yr, 32 earthquakes with magnitude greater than 5 occurred, including largest event ever recorded in (Mw = 5.9 on 15 2018). Earthquakes are clustered space time. Unusual lasting monochromatic very period events were also registered. From early July Global Navigation Satellite System (GNSS)...
Abstract Beside climate‐change‐induced sea‐level rise (SLR), land subsidence can strongly amplify coastal risk in flood‐prone areas. Mapping and quantifying contemporary vertical motion (VLM) at continental scales has long been a challenge due to the absence of gridded observational products covering these large domains. Here, we fill this gap by using new European Ground Motion Service (EGMS) assess current state VLM Europe. First, compare InSAR‐based EGMS Ortho (Level 3) with nearby global...
The Sichuan earthquake, Mw 7.9, struck the Longmen Shan (LMS) range front, China, on 2008 May 12, affecting an area of moderate historical seismicity where little active shortening has been previously reported. Recent studies based space geodesy have succeeded in retrieving far field surface displacements caused by but near (±25 km from faults) coseismic displacement is still poorly constrained. Thus, shallow fault geometry and slip are resolved. Here, for first time this we combine C L-band...
Ground stability is a major concern for land use planning and both natural anthropogenic risk assessment, especially in urbanized areas. Space‐borne differential radar interferometry provides unique tool able to give synoptic view of ground deformation with centimetric millimetric vertical precision. Approaches combining wide range images such as the permanent scatterers (PS) technique allow estimation history single buildings. The PS approach has been exploited investigate test site...
Abstract Delta margins are subject to relatively high rates of land subsidence and have the potential significantly exacerbate future changes in sea levels predicted by global warming models used impact studies. Through a combined analysis GPS persistent scatterer interferometry data, we determine that most coastline Alexandria has been moderate over past decade (0.4 mm/yr on average up 2 locally). This contrasts previous studies suggested excess 3 mm/yr. Based our findings, infer...
Ionospheric contributions to the phase of L-band synthetic aperture radar (SAR) signals put severe limitations on ground displacement measurements retrieved by either differential SAR interferometry or amplitude-image offsets. Such result in an ionospheric screen interferogram and directional fluctuations relative position azimuth pixels offsets maps. In this letter, we propose a procedure for estimating removing surface derived from data. We test data May 28, 2008 Sichuan Earthquake. The...
This paper shows the main outcomes of Puyehue volcano (Chile) eruption monitoring by means multisensor remote sensing instruments working from thermal infrared (TIR) to microwave (MW) spectral range. Thanks use Synthetic Aperture Radar (SAR) and Moderate Resolution Imaging Spectroradiometer (MODIS), evolution was observed, capturing deformations edifice, lava extension, as well information on ash gas emitted. On one hand, SAR Interferometry applied ENVISAT-ASAR data allowed estimation...
Knowing bathymetry at intermediate depth, over large areas, and a reasonable cost is key issue. Spaceborne remote sensing techniques must play an essential role in retrieving such bathymetry. In this paper, method proposed that aims to address issue without any situ measurements by exploiting the characteristics of SPOT-5 satellite dataset. The designed provide from two optical images separated time lag DT 2.04 s. It relies on estimation several clouds wave celerity wavelength pairs using...
Abstract The main active tectonic structure in the western part of Central Sulawesi (Indonesia) is left-lateral Palu-Koro strike-slip fault. Its offshore section was thought not to have broken during M w 7.5 Palu Earthquake on 28 September 2018, challenging established knowledge setting at this location. Here, we use Sentinel-1 SAR interferometry produce a map ground velocities area earthquake for seven months following 2018 earthquake. We show evidence surface deformation along coast bay,...
Abstract. In the present study SAR interferometric techniques (stacking of conventional interferograms and Permanent Scatterers), using images from satellites ERS-1 2, have been applied to region Thessaloniki (northern Greece). The period covered by is 1992–2000. Both gave good quantitative qualitative results. products were used ground surface deformation phenomena that could be related local tectonic context, exploitation underground water sediments compaction. city shows relatively stable...
Volcanic history of Santorini over recent years records a seismo-volcanic unrest in 2011–12 with non-eruptive behavior. The volcano deformation state following the was investigated through multi-sensor Synthetic Aperture Radar Interferometry (InSAR) time series. We focused on analysis Copernicus Sentinel-1, Radarsat-2 and TerraSAR-X Multi-temporal SAR Interferometric (MT-InSAR) results, for post-unrest period 2012–17. Data from multiple Sentinel-1 tracks acquisition geometries were used to...
Slope instabilities are one of the most important geo-hazards in terms socio-economic costs. The island La Réunion (Indian Ocean) is affected by constant slope movements and huge landslides due to a combination rough topography, wet tropical climate its specific geological context. We show that remote sensing techniques (Differential SAR Interferometry correlation optical images) provide complementary means characterize on regional scale. vegetation cover generally hampers analysis C-band...