Other
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996icar..124..359n&link_type=abstract
Icarus, Volume 124, Issue 2, pp. 359-371.
Other
44
Scientific paper
The formation of kilometer-size craters on asteroids is qualitatively different from the formation of meter-size (laboratory- and weapons-scale) craters on Earth. A numerical hydrocode model is used to examine the outcomes of various-size cratering impacts into spheres and half-spaces. A shock wave fractures the target in advance of the crater excavation flow; thus, for impactors larger than 100 m, impacting at typical asteroid impact velocities, target tensile strength is irrelevant to the impact outcome. This result holds whether the target is initially intact or a ``rubble pile,'' even ignoring the effects of gravity. Because of the shock-induced fracture, crater excavation is controlled by gravity at smaller sizes than would otherwise be predicted. Determining the strength-gravity transition by comparing the physical strength of the material to the force of gravity will not work, because strength is eliminated by the shock wave.
Asphaug Erik
Greenberg Richard
Melosh Henry Jay
Nolan Michael C.
No associations
LandOfFree
Impact Craters on Asteroids: Does Gravity or Strength Control Their Size? 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 Impact Craters on Asteroids: Does Gravity or Strength Control Their Size?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact Craters on Asteroids: Does Gravity or Strength Control Their Size? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1501465