A5023056629- Planetary Science and Exploration
- Astro and Planetary Science
- Space Satellite Systems and Control
- Geology and Paleoclimatology Research
- Gamma-ray bursts and supernovae
- earthquake and tectonic studies
- Methane Hydrates and Related Phenomena
- Laser-Plasma Interactions and Diagnostics
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- Earthquake Detection and Analysis
- Space Science and Extraterrestrial Life
- Space Exploration and Technology
- High-pressure geophysics and materials
- Nuclear Issues and Defense
- Combustion and Detonation Processes
- Gas Dynamics and Kinetic Theory
- Ionosphere and magnetosphere dynamics
- Geological and Geochemical Analysis
- Spacecraft and Cryogenic Technologies
- High-Velocity Impact and Material Behavior
- Geotechnical and Geomechanical Engineering
- Astrophysics and Star Formation Studies
- Aeolian processes and effects
- Fluid Dynamics Simulations and Interactions
Institute of Geosphere Dynamics
2016-2025
Moscow Institute of Physics and Technology
2013-2020
Russian Academy of Sciences
2002-2015
The asteroid impact near the Russian city of Chelyabinsk on 15 February 2013 was largest airburst Earth since 1908 Tunguska event, causing a natural disaster in an area with population exceeding one million. Because it occurred era modern consumer electronics, field sensors, and laboratory techniques, unprecedented measurements were made event meteoroid that caused it. Here, we document account what happened, as understood now, using comprehensive data obtained from astronomy, planetary...
Meteor observations and crater field investigations support the view that some meteoroids undergo fragmentation into a finite number of splinters which move long distance without further disruption. The motion these fragments cannot be described in frame liquid‐like models. primary purpose this study is to achieve success improving alternative model separate fragments, based on studying interacting with each other through air pressure. three‐dimensional (3‐D) numerical technique elaborated...
Возможны два предельных сценария ударов крупных космических тел: кратерообразующий удар, когда почти вся начальная кинетическая энергия тела идет на образование кратера, и так называемый«метеорный взрыв», при котором выделяется в атмосфере. В переходных сценариях потеря энергии атмосфере является существенной, но поверхности Земли тело достигает с энергией, достаточной для кратерообразования. Опасные последствия таких должны оцениваться учетом этого разделения энергии. На основе проведенных...
Abstract We completed numerical simulations of a number asteroid and comet impacts on Earth to predict related shock wave thermal radiation effects estimate seismic effects, as well ionospheric disturbances. Using interpolation the results, we were able these for arbitrary impact parameters. In addition, used previously developed models size crater ejecta thickness. Finally, user‐friendly web‐based calculator ( https://asteroidhazard.pro/ ) that quickly estimates pressure exposure at given...
Abstract— Previous investigations of impact‐induced atmospheric erosion considered vertical impacts only. Numerical simulations oblique presented in this paper show that the loss air strongly depends on trajectory inclination and it increases as impact angle decreases. The results numerical over wide range parameters (projectile sizes from 1 to 30 km, velocities 15 70 km/s, escape 5 11.2 projectile densities 3.3 g/cm 3 , normal varying by three orders magnitude) can be approximated simple...
The Tunguska event remained enigmatic for almost 100 years until the collision of Comet Shoemaker-Levy 9 with Jupiter in 1994 helped to resolve this enigma and allowed us adequately interpret more recent Chelyabinsk event. Airbursts typically occur if a meteoroid entering Earth's atmosphere is 10–100 m diameter, i.e., its energy ranges from 0.5 (Chelyabinsk) 20 (Tunguska) Mt TNT. All released strong shock waves generated during entry reaching surface causing substantial damage. Atmospheric...
The 40‐km‐diameter Mjølnir crater in the Barents Sea was created by a meteoroid impact into 400 m shallow sea about 142 Ma. We have used multimaterial hydrocode with depth‐depending target strength to model numerically cratering and early modification stages of impact. Our models are constrained observed morphology structure. best results were obtained for composite structure: very low upper 3 km sedimentary rocks gradual increase from 6.5 depth before using values typical granitic at...
Marine impacts can develop a crater in the seafloor if target water depth is shallow relation to size of impactor. The geology this marine‐target influenced by layer upper part target. influence increases with increased depth. essential when calculating magnitude impact event as merely expresses some expended energy. for often estimated facies analysis sediments related crater, unfortunately ambiguous results. We propose combine conventional methods numerical modeling based on special...
Abstract— Crater‐ejecta correlation is an important element in the analysis of crater formation and its influence on geological evolution. In this study, both ejecta distribution internal development Jurassic/Cretaceous Mjølnir (40 km diameter; located Barents Sea) are investigated through numerical simulations. The simulations show a highly asymmetrical distribution, underscore importance layer surface water distribution. As expected, asymmetry increases as angle impact decreases....
Abstract– Simple estimates suggest that ejecta blankets around larger craters should be more asymmetric than smaller for the same oblique impact angle. Numerical simulations presented in paper confirm an increase scale of gravity‐dominated (and size corresponding projectiles) increases asymmetry both and them.