A5017225260- Planetary Science and Exploration
- Astro and Planetary Science
- Space Exploration and Technology
- Geology and Paleoclimatology Research
- Space Science and Extraterrestrial Life
- Space Satellite Systems and Control
- Geological and Geochemical Analysis
- Marine and environmental studies
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Methane Hydrates and Related Phenomena
- Geomagnetism and Paleomagnetism Studies
- High-pressure geophysics and materials
- Landslides and related hazards
- Seismic Waves and Analysis
- Geological and Geophysical Studies
- Geotechnical and Geomechanical Engineering
- Polar Research and Ecology
- Astrophysics and Star Formation Studies
- Aeolian processes and effects
- Gamma-ray bursts and supernovae
- Rock Mechanics and Modeling
- Scientific Computing and Data Management
- Evolutionary Algorithms and Applications
- Parallel Computing and Optimization Techniques
Institut de physique du globe de Paris
2013-2025
Curtin University
2015-2024
Planetary Science Institute
2018
Massachusetts Institute of Technology
2014-2016
Université Paris Cité
2013-2015
Sorbonne Paris Cité
2013-2015
Centre National de la Recherche Scientifique
2015
Imperial College London
2011-2013
The Open University
2007-2012
Universities Space Research Association
2010
Observations from the Gravity Recovery and Interior Laboratory (GRAIL) mission indicate a marked change in gravitational signature of lunar impact structures at morphological transition, with increasing diameter, complex craters to peak-ring basins. At crater diameters larger than ~200 km, central positive Bouguer anomaly is seen within innermost peak ring, an annular negative extends outward this ring outer topographic rim crest. These observations demonstrate that basin-forming impacts...
Two >130-meter-diameter impact craters formed on Mars during the later half of 2021. These are two largest fresh discovered by Reconnaissance Orbiter since operations started 16 years ago. The impacts created seismic events (magnitudes greater than 4) recorded InSight its 3-year mission. combination orbital imagery and ground motion enables investigation subsurface atmospheric energy partitioning process a planet with thin atmosphere first direct test martian deep-interior models known...
Which Side of the Moon? The far- and nearsides Moon are geologically different. Using high-precision crustal thickness maps derived from NASA's Gravity Recovery Interior Laboratory (GRAIL) mission, Miljković et al. (p. 724 ) show that distribution lunar impact basins is also highly asymmetrical. Numerical simulations basin formation coupled with three-dimensional Moon's asymmetric thermal evolution suggest lateral variations in temperature within crust have a large effect on final size an basin.
titOn the origin of Orientale basinle basin is a major impact crater on Moon, which hard to see from Earth because it right western edge lunar nearside. Relatively undisturbed by later events, serves as prototype for understanding large craters throughout solar system. Zuber et al. used Gravity Recovery and Interior Laboratory (GRAIL) mission map gravitational field around in great detail flying twin spacecraft little 2 km above surface. Johnson performed sophisticated computer simulation...
Impact glasses found in lunar soils provide a possible window into the impact history of inner solar system. However, their use for precise reconstruction this is limited by an incomplete understanding physical mechanisms responsible origin and distribution relationships to local regional geology. Here, we report U-Pb isotopic dates chemical compositions from Chang'e-5 soil quantitative models melt formation ejection that account these glasses. The predominantly provenance indicated...
Abstract We have analyzed the Bouguer anomaly (BA) of ~1200 complex craters in lunar highlands from Gravity Recovery and Interior Laboratory observations. The BA these is generally negative, though positive values are observed, particularly for smaller craters. Crater scale inversely with crater diameter, quantifying how larger impacts produce more extensive fracturing dilatant bulking. than km diameter independent size, indicating that there a limiting depth to impact‐generated porosity,...
Abstract The only martian rock samples on Earth are meteorites ejected from the surface of Mars by asteroid impacts. locations and geological contexts launch sites currently unknown. Determining impact is essential to unravel relations between evolution interior its surface. Here we adapt a Crater Detection Algorithm that compile database 90 million craters, allowing determine potential position these through observation secondary crater fields. We show Tooting 09-000015 both located in...
Abstract We present a catalog of new impacts on Mars. These craters formed in the last few decades, constrained with repeat orbital imaging. Crater diameters range from 58 m down to <1 m. For each impact, we report whether it single crater or cluster (58% clusters); albedo features blast zone (88% halos; 64% linear rays; 10% arcuate majority dark‐toned; 4% light‐toned; 14% dual‐toned); and exposures ice (4% definite; 2% possible). find no trends occurrences clusters latitude, elevation,...
Abstract Impact bombardment during the first billion years after formation of Moon produced at least several tens basins. The Gravity Recovery and Interior Laboratory (GRAIL) mission mapped gravity field these impact structures significantly higher spatial resolution than previous missions, allowing for detailed subsurface morphological analyses to be made across entire globe. GRAIL‐derived crustal thickness maps were used define regions thinning observed in centers lunar basins, which...
Abstract Water ice in the Martian mid‐latitudes has advanced and retreated response to variations planet's orbit, obliquity, climate. A 150 m‐diameter new impact crater near 35°N provides lowest‐latitude exposure of subsurface on Mars. This is largest known ice‐exposing key constraints climate history. indicates a regional, relatively pure deposit that unstable nearly vanished. In past, this may have been tens meters thick extended equatorward 35°N. We infer it overlain by pore emplaced...
Abstract The formation and differentiation of the crust Mars in first tens millions years after its accretion can only be deciphered from incredibly limited records. martian breccia NWA 7034 paired stones is one them. This meteorite contains oldest igneous material ever dated: ~4.5 Ga old. However, source geological context have so far remained unknown. Here, we show that was ejected 5–10 Ma ago north-east Terra Cimmeria—Sirenum province, southern hemisphere Mars. More specifically, belongs...
On the origin of Orientale basin is a major impact crater on Moon, which hard to see from Earth because it right western edge lunar nearside. Relatively undisturbed by later events, serves as prototype for understanding large craters throughout solar system. Zuber et al. used Gravity Recovery and Interior Laboratory (GRAIL) mission map gravitational field around in great detail flying twin spacecraft little 2 km above surface. Johnson performed sophisticated computer simulation its...
Research Article| September 27, 2018 Microstructural dynamics of central uplifts: Reidite offset by zircon twins at the Woodleigh impact structure, Australia Morgan A. Cox; Cox * 1Space Science and Technology Centre (SSTC), School Earth Planetary Science, Curtin University, Perth, Western 6102, *E-mail: morgan.cox@student.curtin.edu.au Search for other works this author on: GSW Google Scholar Aaron J. Cavosie; Cavosie Phil Bland; Bland Katarina Miljković; Miljković Michael T.D. Wingate...
Abstract A new 1.5 m diameter impact crater was discovered on Mars only ~40 km from the InSight lander. Context camera images constrained its formation between 21 February and 6 April 2019; follow‐up High Resolution Imaging Science Experiment resolved crater. During this time period, three seismic events were identified in data. We derive expected signal characteristics use them to evaluate each of events. However, none can definitively be associated with source. Atmospheric perturbations...
Magnetic fields induced by the solar wind and amplified impacts cannot explain crustal magnetization on Moon.
Abstract The lunar cratering record is used to constrain the bombardment history of both Earth and Moon. However, it suggested from different perspectives, including impact crater dating, asteroid dynamics, samples, basin-forming simulations, evolution modelling, that Moon could be missing evidence its earliest record. Here we report basins formed during magma ocean solidification should have produced morphologies in comparison later epochs. A low viscosity layer, mimicking a melt between...
Abstract Since landing in late 2018, the InSight lander has been recording seismic signals on surface of Mars. Despite nominal prelanding estimates one to three meteorite impacts detected per Earth year, none have yet identified seismically. To inform revised detectability estimates, we simulated numerically a suite small onto Martian regolith and characterized their source properties. For impactor size velocity range most relevant for InSight, crater diameters are 1–30 m. We found that this...