A5075598482- Astro and Planetary Science
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Marine and environmental studies
- Geological and Geochemical Analysis
- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
- Geomagnetism and Paleomagnetism Studies
- Isotope Analysis in Ecology
- Particle Dynamics in Fluid Flows
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- earthquake and tectonic studies
- Fluid Dynamics and Heat Transfer
- Laser-induced spectroscopy and plasma
- Space Exploration and Technology
- Gas Dynamics and Kinetic Theory
Museum für Naturkunde
2021-2024
Institut de physique du globe de Paris
2021-2022
Université Paris Cité
2021-2022
Centre National de la Recherche Scientifique
2021
Abstract Planetary impacts have shaped the surfaces and interiors of planets. They were particularly critical in last stage planetary accretion, as they eventually formed terrestrial During these large supersonic collisions, shock waves melted impactor target, silicate magma oceans. Because propagation melting is faster than excavation an impact crater, cratering can be considered a purely hydrodynamic process. Here, we use both laboratory experiments water numerical simulations to...
Introduction: Planetary formation models suggest that Earth experienced multiple high-energy impacts. They can produce substantial melt in the proto-Earth’s silicate mantle, possibly forming a global magma ocean. Mixing of impactor’s metallic core into molten Earth's mantle controls chemical equilibration between metal and silicates, which defines respective compositions mantle. Previous studies explore mixing upon large impacts either with numerical modelling or analog...
Introduction: The late accretion phase is characterized by impacts of large differentiated bodies onto terrestrial planets. material from these could have changed Earth’s composition significantly. One noteworthy effect that they may explain the high concentration highly siderophile elements [HSE] in contemporary mantle [1,2]. likely presence a deep magma ocean, as consequence giant collisions like moon forming impact [3] necessitates better understanding into such molten targets....
<p class="western" align="justify"><strong>Introduction: </strong>During the late accretion phase, large differentiated bodies impacted <span lang="en-US">the</span> Earth. The material from these impactors, especially their cores, could have altered composition of Earth’s mantle and might offer an explanation [1] for...
Prevailing models for the formation of Moon invoke a giant impact between planetary embryo and proto-Earth \citep{Canup_2004, Cuk_Stewart_2012}. Despite similarities in isotopic chemical abundances refractory elements compared to Earth's mantle, is depleted volatiles \citep{Wolf_Anders_1980}. Current favour devolatilisation via incomplete condensation proto-Moon an Earth-Moon debris-disk \citep{Charnoz_Michaut_2015,Canup_2015,Lock_2018}. However physics this protolunar disk poorly understood...
Planetary collisions play an important role in the compositional and thermal evolution of planetary systems such are caracteristics final stage formation. The Moon-forming impact event is thought to (re)set conditions for subsequent thermochemical Earth Moon. Large parts proto-Earth melt as a consequence [e.g.1] extent melting affects Earth’s interior atmosphere. It then critical address initial volume shape possible magma ocean after impact. Previously, giant was modeled with...
Introduction: The origin of the relatively high concentration highly siderophile elements in Earth’s mantle [1] is still debated. One possible explanation addition iron rich cores differentiated impactors during late accretion phase [2]. Since Earth has most likely had a magma ocean this period [3], quantitative understanding impacts into such targets pivotal interest. In particular answer to question whether impactor core material breaks droplets or remains mostly one piece key,...