Numerical Modeling of an Asteroid Impact on Earth: Matching
2023年5月9日 · This study aims to reproduce the asteroid’s impact mechanics by matching computer simulations obtained with the use of the distinct element method (DEM) against the latest topographic data observed across the crater footprint. A 2D model was formulated using ITASCA’s PFC2D software to reproduce the asteroid’s impact on Earth.
Impact Earth - Purdue University
Calculator for asteroid impacts with Earth. Calculator for asteroid impacts with Earth. Robert Marcus, H. Jay Melosh, and Gareth Collins. Projectile Parameters ... Chelyabinsk Fireball Meteor Crater Tunguska Fireball Ries Crater Chesapeake Bay Chicxulub Clear Example Input. Energy. Global Changes. Atmospheric Entry. Crater. Thermal Effects ...
Explorer’s Guide: Impact Crater Simulations
Impact craters form when huge asteroids or comets, sometimes kilometers in size, hit the surface of a planetary body. Images of various planets and moons in the solar system show thousands and thousands of impact craters on their surfaces. Impact craters can also be …
Numerical simulation of impact crater formation and distribution …
2023年2月1日 · We establish a complete numerical model of planetary impact cratering different from iSALE. We analyze the distribution of high-pressure polymorphs based on shock metamorphism. The FE-SPH model has higher numerical precision …
Asteroid threat assessment requires the quantification of both the impact likelihood and resulting consequence across the range of possible events. This paper presents a probabilistic asteroid impact risk (PAIR) assessment model developed for this purpose. The model incorporates
A steeply-inclined trajectory for the Chicxulub impact
2020年5月26日 · Here we use 3D numerical modelling to examine the relationship between impact angle and structural crater asymmetries in a Chicxulub-scale peak-ring crater in a flat-layered target without...
Constraining surface properties of asteroid (162173) Ryugu from ...
2022年11月30日 · Nature Communications - Hayabusa2 mission impact experiment on asteroid Ryugu formed a crater larger than expected. Here, the authors show numerical impact simulations and find that the target...
Modeling the Chronologies and Size Distributions of Ceres and …
2020年8月12日 · We infer the crater chronologies of Ceres and Vesta from a self-consistent dynamical model of asteroid impactors. The model accounts for planetary migration/instability early in the history of our solar system and tracks asteroid orbits over 4.56 Gyr.
Morphological Diversity of Impact Craters on Asteroid (16) Psyche ...
2020年9月4日 · As the size and morphology of a crater on an asteroid's surface are determined by both the projectile's properties (e.g., mass, velocity), and the target's properties (e.g., strength, porosity, structure), Psyche's craters may help discriminate between alternative models of its internal structure and formation.
Numerical Modeling of Crater Formation by Meteorite Impact …
2009年1月1日 · The NOBEL code for modeling compressible fluid dynamics is used to model the formation of the Arizona meteor crater by a 50 meter diameter iron asteroid impacting basalt at 12 kilometers/second. The code is also used to model the crater generated by the SEDAN 104 kiloton nuclear explosion.