A5048181126- Geology and Paleoclimatology Research
- Geological formations and processes
- Coastal and Marine Dynamics
- Pleistocene-Era Hominins and Archaeology
- French Urban and Social Studies
- Cryospheric studies and observations
- European Socioeconomic and Political Studies
- Arctic and Russian Policy Studies
- Tropical and Extratropical Cyclones Research
- earthquake and tectonic studies
- Climate change and permafrost
- French Historical and Cultural Studies
- Aging, Elder Care, and Social Issues
- Communism, Protests, Social Movements
- Island Studies and Pacific Affairs
- Cultural Insights and Digital Impacts
- Methane Hydrates and Related Phenomena
- Coastal wetland ecosystem dynamics
- Paleontology and Stratigraphy of Fossils
- Geological and Geophysical Studies
- Landslides and related hazards
- Climate Change, Adaptation, Migration
- Marine and environmental studies
- Pacific and Southeast Asian Studies
- Remote Sensing and LiDAR Applications
École Pratique des Hautes Études
2013-2024
Laboratoire de Géographie Physique et Environnementale
2004-2024
Université Paris Sciences et Lettres
2016-2021
Pôle de Recherche pour l'Organisation et la Diffusion de l'Information Géographique
1987-2021
Laboratoire Cognitions Humaine et Artificielle
2019-2020
Université Paris 8
1999-2020
ORCID
2020
Littoral, Environnement, Télédétection, Géomatique
2015-2019
Centre National de la Recherche Scientifique
2002-2019
Institut Universitaire Européen de la Mer
2015-2018
Abstract Marine inundation hazards in French Polynesia are various and unevenly distributed the territory; they strongly related to physiography (topography, bathymetry, coral reef development) of these oceanic islands. Cyclones tsunamis appear as predominant processes definition coastal flooding risks for Polynesian people. This study examines geomorphic impacts Tropical Cyclone Oli, which struck western part February 2010. Submarine erosion is quantified through colony degree destruction...
Abstract This paper evaluates the paraglacial evolution of a sediment‐mantled slope in polar maritime environment. The intensity processes is estimated through quantification erosion and dating field sectors with help photographic archives. Gully has been using morphometric parameters by surveys vegetation cover. rapid melting dead‐ice cores controls gully formation. leads to form modification: profile gradients are reduced from mean 35° ranging between 10° 15°. Profile results collapse...
In the field of Indoor Air Quality research, measurement volatile organic compounds (VOCs) demands instruments that are rapid, mobile, robust, highly sensitive and allow for simultaneous monitoring multiple compounds. These should also compensate possible interferences from permanent gases air humidity. Proton-transfer-reaction-mass-spectrometry (PTR-MS) has proved to be a valuable promising technique fits mentioned requirements suitable online measuring device. this study, five exemplary...
Abstract This paper presents evidence for strong biochemical weathering of basaltic outcrops induced by fungal communities in a cold environment. Weathering rind formation is considered to be consequence the biological activity. Comparisons between vitro experiments and situ observations allow characterization effects on rocks help define place these micro‐organisms environment chain. It concluded that chronologically first process weathering, probably leading subsequent expression cryogenic...
Satellite imagery constitutes an affordable solution to map coastal bathymetry at very high resolution (VHR). Bathymetry retrieval is commonly based on regression analysis linking depth response with remotely-sensed spectral predictors. Most studies have focused a single regressor using conventional three visible bands over clear waters. However the interdependence of added in respect linear and non-linear regressors poorly studied strongly lacks for turbid Here we investigate joint...
Very high resolution (VHR) space-borne data are needed to finely and continuously map salt marshes. The WorldView-3 (WV-3) sensor leverages one panchromatic, eight optical, shortwave infrared (SWIR) bands at 0.31, 1.24, 7.5 m pixel size, respectively. Although optical have been previously pansharpened, no attempt use the 16-band superspectral set VHR (0.31 m) has yet reviewed. Here, we propose reliably pan-sharpen 16 WV-3 predictors so as model (artificial neural network, ANN) marsh...
Abstract X‐ray tomography is used to analyse the grain size and sedimentary fabric of two tsunami deposits in Marquesas Islands (French Polynesia, Pacific Ocean) which are particularly exposed trans‐Pacific tsunamis. One site located on southern coast Nuku Hiva Island (Hooumi) other one Oa (Tahauku). Results compared with techniques such as two‐dimensional image analysis bulk samples (particle analyser) anisotropy magnetic susceptibility. The characterized through three‐dimensional stacks...
Transported coastal boulders have increasingly come to represent a valuable element of investigations within the broader framework multi-proxy approaches applied hazard studies. Through case study on Taveuni Island in Fiji, this paper outlines some and hindrances effective timing prehistorical high-energy marine inundation events (storms tsunamis) tropical coastlines from evidence reef-platform carbonate boulders. Various sources errors are outlined that investigators must consider when...
Biogenic reefs provide a wide spectrum of ecosystem functions and services, such as biodiversity hotspot, coastal protection, fishing practices. Honeycomb worm (Sabellaria alveolata) reefs, in the Bay Mont-Saint-Michel (France), constitute largest intertidal bioconstruction Europe but undergo anthropogenic pressures (aquaculture-stemmed food/space competition siltation, fishing-driven trampling). Very high-resolution (VHR) airborne optical data enable cost-efficient biophysical measurements...