A5091713611- Geological and Geophysical Studies
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Geological and Geophysical Studies Worldwide
- Marine and environmental studies
- earthquake and tectonic studies
- Coastal and Marine Dynamics
- Oceanographic and Atmospheric Processes
- Aeolian processes and effects
- Pleistocene-Era Hominins and Archaeology
- Diatoms and Algae Research
- Geological Modeling and Analysis
- Archaeological and Geological Studies
- Reservoir Engineering and Simulation Methods
- Paleontology and Stratigraphy of Fossils
- Lattice Boltzmann Simulation Studies
- Radioactive element chemistry and processing
- Seismic Imaging and Inversion Techniques
- Coastal and Marine Management
National Laboratory of Energy and Geology
2008-2023
Université Côte d'Azur
2014
Centre National de la Recherche Scientifique
2014
National Institute of Engineering, Technology and Innovation
2009
Laboratoire des Sciences du Climat et de l'Environnement
2007
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2007
CEA Paris-Saclay
2007
Abstract Rapid changes in ocean circulation and climate have been observed marine-sediment ice cores over the last glacial period deglaciation, highlighting non-linear character of system underlining possibility rapid shifts response to anthropogenic greenhouse gas forcing. To date, these are still not fully explained. One obstacle hindering progress our understanding interactions between past is difficulty accurately dating marine cores. Here, we present a set 92 sediment from Atlantic...
Studies from the subtropical western and eastern Atlantic Ocean, using 231 Pa/ 230 Th ratio as a kinematic proxy for deep water circulation, provided compelling evidence strong link between climate rate of meridional overturning circulation (MOC) over last deglaciation. In this study, we present compilation existing new sedimentary records North cores 1710 4550 m depth. Comparing different depths provides insights into evolution geometry formation in during 20,000 years. The measured upper...
Standardizing the signature of tsunami deposits has been identified as a major limitation for identification paleo-tsunami deposits. This mostly arises from strongly source-dependent nature these deposits, which in turn determines their composition and depositional architecture, effect local morphology corresponding environment. Here, we provide new high-resolution mineralogical, geochemical micro/macrofauna data 1755 layer Boca do Rio estuary (Algarve, Portugal) with aim unraveling...
The last glacial was punctuated by several massive ice sheet surges into the North Atlantic that impacted surface water hydrology especially where icebergs melted. However, links between variations in and productivity during these Heinrich events (HEs) remain uncertain. To address this issue, diatoms organic carbon were examined across event 1 (HE 1) 4 4) seven sediment cores spanning 40°N to 63°N latitude. Our results show low diatom abundances HEs, consistent with decreased productivity....
When a micron-sized magnetizable particle is introduced into suspension of nanosized magnetic particles, the nanoparticles accumulate around microparticle and form thick anisotropic clouds extended in direction applied field. This phenomenon promotes colloidal stabilization bimodal suspensions allows efficient separation used bioanalysis water purification. In present work, size shape nanoparticle under simultaneous action an external uniform field flow have been studied detail. experiments,...
The reservoir age of waters and carbon sequestration increased in the deep Atlantic Ocean during last glacial period. northern water (GNADW) formation reached shallower depths than ensuing interglacial, underlying southern-sourced bottom (GAABW) was filling basin, generally poorly ventilated. mechanisms within ocean that facilitate flip from glacial-to-interglacial modes are as yet to be understood.   Here we present analysis performed on foraminifera (benthic...
Abstract. We combine consistently dated benthic carbon isotopic records distributed over the entire Atlantic Ocean with numerical simulations performed by a glacial configuration of Norwegian Earth System Model active ocean biogeochemistry in order to interpret observed Cibicides δ13C changes at stadial–interstadial transition corresponding end Heinrich Stadial 4 (HS4) terms circulation and remineralization changes. show that marked increase HS4 between ∼2000 4200 m can be explained nutrient...
Abstract Spatially extensive and intense phytoplankton blooms observed off Iberia, in satellite pictures, are driven by significant nutrient supply upper-ocean vertical mesoscale activity rather than horizontal advection coastal upwelling. Productivity of oligotrophic regions is still poorly depicted discrete instrumental model data sets. The paleoproductivity reconstructions these areas represent the mean productivity over long periods, bringing new insights into total biomass fluxes. Here,...
Abstract. We combine consistently dated benthic carbon isotopic records distributed over the entire Atlantic Ocean with numerical simulations performed by a glacial configuration of Norwegian Earth System Model active ocean biogeochemistry, in order to interpret observed Cibicides δ13C changes at stadial-interstadial transition corresponding end Heinrich Stadial 4 (HS4) terms circulation and remineralization changes. show that marked increase HS4 between ~2000 4200 m can be explained...