A5004980720- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Soil erosion and sediment transport
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Seismic Imaging and Inversion Techniques
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Elemental Analysis
- Geochemistry and Geologic Mapping
- Marine and environmental studies
- Geological Studies and Exploration
- Paleontology and Stratigraphy of Fossils
- Hydrology and Sediment Transport Processes
- Magnetic and Electromagnetic Effects
- Geological Formations and Processes Exploration
- Geophysical and Geoelectrical Methods
- Water Quality and Pollution Assessment
- Aeolian processes and effects
- Water Quality Monitoring and Analysis
- Geological Modeling and Analysis
- Evolution and Paleontology Studies
- Hydrology and Watershed Management Studies
Centre de Géosciences
2015-2024
Université Paris Sciences et Lettres
2016-2023
ParisTech
2016-2023
Université Paris Dauphine-PSL
2023
École Nationale Supérieure des Mines de Paris
2012-2021
University of Bremen
2004-2011
Utrecht University
2004-2009
Institut Pierre-Simon Laplace
2009
Laboratoire des Sciences du Climat et de l'Environnement
2008
Université de Versailles Saint-Quentin-en-Yvelines
2008
As a network of researchers we release an open-access database (EUSEDcollab) water discharge and suspended sediment yield time series records collected in small to medium sized catchments Europe. EUSEDcollab is compiled overcome the scarcity data at relevant spatial scales for studies on runoff, soil loss by erosion delivery. Multi-source measurement from numerous institutions were harmonised into common metadata structure. Data reuse facilitated through accompanying descriptors providing...
For several decades now, air pollution has been a key concern for experts, public authorities and city dwellers, who are the first to be affected. Airborne particulate matter (PM) is indeed well known cause adverse health effects. However, urban quality stations too sparse provide detailed picture of distribution pollution. Since PM also deposited on surfaces tree, tree bark can then act as an alternative passive trap. Its magnetic properties make it possible measure amount metal particles...
During the Miocene—Pliocene, Carpathian region represented westernmost part of so-called Eastern Paratethys, a palaeobioprovince that covered central and eastern Europe as well parts southwest Asia. Previous palaeomagnetic investigations provide high-resolution magnetochronology for sedimentary sequences foredeep indicate marked transition in magnetic carriers from iron oxides to sulphides, Chron C3r. Here, we demonstrate using detailed rock scanning electron microscope (SEM) analyses major...
SUMMARY The chronic exposure to particulate matter (PM) pollution causes societal and environmental issues, in particular urban areas where most citizen are regularly exposed vehicular traffic. Since almost two decades, magnetic monitoring has demonstrated its efficiency successfully map relative concentrations of airborne particle deposition on accumulative surfaces. A better understanding the results requires discriminating main traffic-related sources observed signal collectors. To meet...
SUMMARY The reliability of primary natural remanent magnetization (NRM) signals in greigite-bearing sediments has been frequently questioned. Here, we show that the stable NRM deep marine Middle to Late Miocene at Monte dei Corvi, northern Italy, is mainly carried by greigite. Combined rock magnetic experiments and scanning electron microscopy successfully enabled discrimination between two greigite populations. One fine-grained relatively well-dispersed population (grain size 60 200 nm)...
The magnetic microparticle and nanoparticle inventories of marine sediments from equatorial Atlantic sites were investigated by scanning transmission electron microscopy to classify all present detrital authigenic mineral species investigate their regional distribution, origin, transport, preservation. This information is used establish source‐to‐sink relations constrain environmental proxy interpretations for this area. Magnetic extracts prepared three supralysoclinal open ocean gravity...
This study presents an innovative application of well‐established environmental magnetic proxy parameters on fluvial sediments, with the aim to trace geological and human‐induced processes in complex Seine river drainage system northern France. We seek identify fingerprints mechanical chemical weathering processes, regional distribution suspended material, changes balance natural input versus anthropogenic pollution. In order reach these goals, we applied a combination rock advanced scanning...
The diffusivity of 145 compounds in polydimethylsiloxane (PDMS) material was determined the laboratory using a film stacking technique. results were pooled with available literature data, providing final data set 198 (DPDMS ) spanning over approximately 5 log units. principal variables controlling penetrants investigated by comparing DPDMS within and between different homologous series. dipole moment, molecular size, flexibility appear to be most prevalent factors compound's diffusivity. A...
With various low-temperature experiments performed on magnetic mineral extracts of marine sedimentary deposits from the Argentine continental slope near Rio de la Plata estuary, a so far unreported style partial self-reversal has been detected. In these sediments sulphate—methane transition (SMT) zone is situated at depths between 4 and 8 m, where reductive diagenesis severely alters assemblage. Throughout sediment column magnetite ilmenite are present together with titanomagnetite...
Low-temperature rock magnetic measurements have distinct diagnostic value. However, in most bulk marine sediments the concentration of ferrimagnetic and antiferromagnetic minerals is extremely low, so even sensitive instrumentation often responds to paramagnetic contribution silicate matrix residual field magnetometer. Analysis extracts usually performed solve problems raised by low concentrations. Additionally can be used for several other analyses, example electron microscopy or X-ray...
In paleomagnetic and environmental magnetic studies the magnetomineralogical identification is usually based on a set of rock parameters, complemented by crystallographic chemical information retrieved from X-ray diffraction (XRD), (electron) microscopy or energy dispersive spectroscopy (EDS) selected samples. While very useful, each these supplementary techniques has its limitations when applied to natural sample material which are related low particle concentrations (down ppm range in...
Instrumental mass fractionation (IMF) of isotopic SIMS analyses (Cameca 1280HR, CRPG Nancy) was predicted by response surface methodology (RSM) for the<sup>18</sup>O/<sup>16</sup>O determination plagioclase, K-feldspar, and quartz.