Free particle modelling of hypervelocity asteroid collisions with the Earth

Details Free particle modelling of hypervelocity asteroid collisions with the Earth Free particle modelling of hypervelocity asteroid collisions with the Earth

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994p%26ss...42.1123j&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 42, no. 12, p. 1123-1137

Statistics

Computation

5

Asteroids, Collisions, Computerized Simulation, Earth (Planet), Hydrodynamics, Hypervelocity Impact, Mathematical Models, Time Dependence, Computational Grids, Craters, Deformation, Density (Mass/Volume), Dynamic Characteristics, Internal Energy, Jet Flow, Pressure, Shock Waves, Velocity

Scientific paper

This paper presents a time-dependent two-dimensional numerical model of the impact phenomena. The model deals with formation and evolution of a crater, formation of an impact jet, and with global deformation and dynamical parameters of the impacted body. The model is applied to study the problem of deformation of the Earth when impacted by an asteroid. A hydrodynamical code of the free particle numerical method (HEFP) is applied to a silicate asteroid (impactor) and to the multilayered spherical Earth (target) described by the PREM model. The asteroids radii are within a range between 5 and 800 km. The velocity range is 20-30 km/s. Calculations cover the time intervals up to 2000 s. Each of the material points of the bodies under consideration (the Earth and an asteroid) is described by its time-dependent position, velocity, specific internal energy, pressure and density. The global results, among others, are as follows: (1) deformation of the Earth's surface; (2) position of the shock wave within the Earth; (3) deformation of consecutive layers within the Earth's interior, and (4) morphology of the crater, including behavior of the impact jet and deformation of the impactor.

Affiliated with

Also associated with

No associations

Rating

Free particle modelling of hypervelocity asteroid collisions with the Earth does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Free particle modelling of hypervelocity asteroid collisions with the Earth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Free particle modelling of hypervelocity asteroid collisions with the Earth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1414002