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Irradiation- and Diffusion-Driven Hydrogen Isotope Fractionation in the Accretion Disk – FrIHIDDA
A remplir (20 lignes max,
Original Measurement of Energy using a Geometrical Approach – OMEGA
Since the discovery of the accelerating expansion of the Universe in 1998, understanding the nature of dark energy, or highlighting a change in the laws of general relativity scale, has become one of the major challenges of modern cosmology. From the observational point of view, it is necessary to h
The Longriba fault: the key to unravel the tectonics of the Eastern Tibetan Margin? – LONGRIBA
The interaction between the Longriba fault and the faults in the Longmen Shan is critical, because its estimated Quaternary slip rate is an order of magnitude higher than that of the Longmen Shan faults; it may thus account for a large part of the present-day deformation, and must be accounted for i
Crystal-chemistry of iron-bearing minerals and implications in the geochemical cycling of metal pollutants – CrIMin
In soils and sediments, chemical reactions at the interfaces between iron oxyhydroxides and water play an important role in numerous natural processes, from controlling the fate and transport of environmental contaminants to the biological availability and geochemical cycling of iron. In this contex
Hydrogen cycle within the Deep Earth – HYDEEP
Rocks and minerals from the mantle show that the Earth's interior remains a potentially significant reservoir of water. Moreover, the most recent seismological studies show that a low velocity zone is located just above the discontinuity at 410-km depth. This zone is interpreted as due to the format
Evolution of the Hydrological Cycle over France: Processes and Uncertainties – ECHO
If some past studies have shown that serious impacts on the continental hydrological cycle over France are to be expected in the future climate, some major uncertainties still remain and current knowledge is therefore far from sufficient to allow the design of efficient adaptation strategies. Caus
Multi-wavelength radiative transfer and polarization modeling of active galactic nuclei and related objects – POLIOPTIX
Despite the continuous progress in observational techniques, the nearest active galactic nuclei (AGN) can not be directly resolved to the scale of the accretion and ejection flow around supermassive black holes. The physical parameters of these flows or of the dusty region around the broad emission
Differentiation of the Early Silicate Earth: Isotopic Constraints from the Hadean Rock Record – DESIR
There is little question that the first 800 million years of Earth evolution, a period known as the Hadean Eon, was the most geodynamically active in our planet’s history. During this time, the Earth experienced a collision with a Mars-sized embryo (Canup 2004), which likely created a global magma
Spatio-chronological analysis of Altiplano paleoGlaciers during the lake Tauca episode (Heinrich 1): a case study for building a paleoprecipitation map in the Tropical Andes. – GALAC
A major issue in paleoclimatology research is the development of new approaches to reconstruct the spatial variability of paleoprecipitations and paleotemperatures over the continents. The GALAC project will focus on a case study to improve the knowledge of the Andes paleoclimate. We will indeed us
Arsenic/Organic matter/Fe(III) oxide interactions. Can wetlands be source of arsenic for aquifers? – ARSENORG
Arsenic (As) is probably the environmental contaminant that is responsible for the highest risk of morbidity and mortality worldwide. The major source of contamination has to be related to high As concentrations in groundwaters. However, the origin of such high amount of As remains a matter of debat
Submesoscale ocean MOdeling for Climate – SMOC
Submesoscale turbulence has recently attracted much attention. In the upper ocean it essentially consists of a myriad of fronts that reside in the vicinity of mesoscale eddies and in regions characterized by intense air-sea fluxes. The role played by submesoscale turbulence (i.e. with scales smaller
Turbulence and HEating in the SOlar Wind – THESOW
A remplir (20 lignes max,
Towards a global Understanding of Massive Stars Evolution – TUMSE
Massive stars are at a crossroad of astrophysics. However, their evolution is still only partly known. And consequently their impact on their environmant is not fully understood. We do not have a clear view of the relations between the various types of massive stars. They are born as O and B star
PeAt bog Records of Atmospheric Dust fluxes: Holocene palaeoenvironmental and palaeoclimatic implications for Southern South America – PARAD
1/ Provide records of spatial & temporal changes in dust deposition and sources at high-latitudes 2/ Contribute to understanding the role of dust in past, present & future climate change 3/ Bridge the gap between Patagonian proxy-based climate records, dust forcing factors in the Southern Hemisphe
Monitoring Snow in a changing climate – MONISNOW
The snow cover and the atmosphere interact strongly through the energy and matter transfers across their interface. The main interaction and the most well-known, results from the strong difference in albedo between snow and other surface types. For this reason, the extent of the snow-covered area