Centre Européen
de Recherche et d'Enseignement
des Géosciences de l'Environnement

Earth and Planets

Contacts : Lionel Siame & Yoann Quesnel

Field campaigns

Publications

En savoir plus

Tools and Methods

En savoir plus

Earth surface processes, tectonics and geodynamics

How, when and why the Earth topography evolve is our main interest to quantify links between tectonic, climate and future evolutions in response to global change. We study seismic hazards (dating earthquakes and determining rate of active faults), landslides and extreme coastal events (paleotsunamis).

Rivers, deltas and coastal areas

The present state and past variability of fluvial and coastal systems are studied using hydrological and geomorphological characterization by remote sensing, in-situ measurements and modeling. Natural hazards (tsunamis, flooding, landslides...) and human influence (deltaic regions) are two applied research themes.

Geochronometry and palaeoenvironments

Using different dating methods and paleoenvironmental reconstitution of paleo-, neo- and archaeological sites, we compare the evolution and resilience of human societies in their environmental context to the actual issues of global climate changes.

Earth's magnetic field

To understand their sources, spatial and temporal evolution of the Earth's magnetic field are studied using paleomagnetism, archeomagnetism (lavas and burnt archaeological samples) and new techniques such as 10Be isotopic geochemistry on sedimentary core samples. The resulting high sampling rate allows to unveil fast inversions and excursions of the Earth's dynamo. By numerical modeling and laboratory measurements, the crustal magnetization beneath the most intense magnetic field anomalies is also investigated.

Planetology

Solid bodies of the Solar System are studied: small bodies (asteroids), planets (Mars, Earth) and their satellites (Moon). Our time scale ranges from the early evolution of the Solar System (4.5 Ga) to recent surface processes (impact craters, tektites and ejectas).