A5007936531- Planetary Science and Exploration
- Astro and Planetary Science
- Seismic Waves and Analysis
- Space Exploration and Technology
- Earthquake Detection and Analysis
- Geophysics and Sensor Technology
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Ionosphere and magnetosphere dynamics
- Space Science and Extraterrestrial Life
- Geology and Paleoclimatology Research
- Geophysics and Gravity Measurements
- Space Satellite Systems and Control
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Underwater Acoustics Research
- Scientific Research and Discoveries
- Inertial Sensor and Navigation
- Solar and Space Plasma Dynamics
- Space exploration and regulation
- Marine and environmental studies
- Meteorological Phenomena and Simulations
- Spacecraft and Cryogenic Technologies
Institut Superieur de l'Aeronautique et de l'Espace (ISAE-SUPAERO)
2016-2025
Université de Toulouse
2016-2025
Los Alamos National Laboratory
2022-2024
Université de Bordeaux
2024
Université Toulouse III - Paul Sabatier
2011-2023
Centre National de la Recherche Scientifique
2006-2023
Institut de Recherche en Astrophysique et Planétologie
2011-2023
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2022
CEA DAM Île-de-France
2022
University of Baltimore
2022
Clues to a planet's geologic history are contained in its interior structure, particularly core. We detected reflections of seismic waves from the core-mantle boundary Mars using InSight data and inverted these together with geodetic constrain radius liquid metal core 1830 ± 40 kilometers. The large implies martian mantle mineralogically similar terrestrial upper transition zone but differing Earth by not having bridgmanite-dominated lower mantle. inferred mean density 5.7 6.3 grams per...
Single seismometer structure Because of the lack direct seismic observations, interior Mars has been a mystery. Khan et al. , Knapmeyer-Endrun and Stähler used recently detected marsquakes from deployed during InSight mission to map (see Perspective by Cottaar Koelemeijer). likely 24- 72-kilometer-thick crust with very deep lithosphere close 500 kilometers. Similar Earth, low-velocity layer probably exists beneath lithosphere. The is highly enriched in radioactive elements that help heat...
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...
Abstract The detection of deep reflected S waves on Mars inferred a core size 1,830 ± 40 km (ref. 1 ), requiring light-element contents that are incompatible with experimental petrological constraints. This estimate assumes compositionally homogeneous Martian mantle, at odds recent measurements anomalously slow propagating P diffracted along the core–mantle boundary 2 . An alternative hypothesis is Mars’s mantle heterogeneous as consequence an early magma ocean solidified to form basal layer...
We present the first observations of seismic waves propagating through core Mars. These observations, made using data collected by InSight geophysical mission, have allowed us to construct seismically constrained models for elastic properties Mars' core. observe core-transiting phase SKS from two farside events detected on Mars and measure travel times relative mantle traversing body waves. travels as a compressional wave, providing information about bulk modulus density. perform...
The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) mission began collecting high quality seismic data on Mars in February 2019. This manuscript documents the seismicity observed by SEIS, InSight's seismometer, from this time until end of March 2020. Within project, Marsquake Service (MQS) is responsible for prompt review all collected InSight, detection events that are likely to be origin, curation release catalogues. In first year collection, MQS...
come from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire
Several seismic experiments were deployed on the Moon by astronauts during Apollo missions. The began in 1969 with 11, and continued 12, 14, 15, 16 17. Instruments at 17 remained operational until final transmission 1977. These remarkable provide a valuable resource. Now is good time to review this resource, since InSight mission returning data from Mars, missions Europa are development different space agencies. We present an overview of available four sets Moon: Passive Seismic Experiments,...
Abstract The instrument package SEIS (Seismic Experiment for Internal Structure) with the three very broadband and short‐period seismic sensors is installed on surface Mars as part of NASA's InSight Discovery mission. When compared to terrestrial installations, deployed in a harsh wind temperature environment that leads inevitable degradation quality recorded data. One ubiquitous artifact raw data an abundance transient one‐sided pulses often accompanied by high‐frequency spikes. These...
The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) mission landed on the surface of Mars November 26, 2018. One scientific instruments in payload that is essential to SEIS package (Seismic Experiment for Interior Structure) which includes a very broadband short period seismometer. More than one year since landing, continues be fully operational has been collecting an exceptional data set contains not only signals seismic origins, but also noise...
We detected surface waves from two meteorite impacts on Mars. By measuring group velocity dispersion along the impact-lander path, we obtained a direct constraint crustal structure away InSight lander. The crust north of equatorial dichotomy had shear wave approximately 3.2 kilometers per second in 5- to 30-kilometer depth range, with little variation. This implies higher density than inferred beneath lander, suggesting either compositional differences or reduced porosity volcanic areas...