Statistics – Computation
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008m%26ps...43.1075a&link_type=abstract
Meteoritics & Planetary Science, vol. 43, Issue 6, p.1075-1084
Statistics
Computation
8
Craters, Impact Craters, Asteroid Scaling, Impact Cratering
Scientific paper
If impact stress reverberation is the primary gradational process on an asteroid at global scales, then the largest undegraded crater records an asteroid’s seismological response. The critical crater diameter Dcrit is defined as the smallest crater whose formation disrupts all previous craters globally up to its size; it is solved for by combining relationships for crater growth and for stress attenuation. The computation for Dcrit gives a simple explanation for the curious observation that small asteroids have only modest undegraded craters, in comparison to their size, whereas large asteroids have giant undegraded craters. Dcrit can even exceed the asteroid diameter, in which case all craters are “local” and the asteroid becomes crowded with giant craters. Dcrit is the most recent crater to have formed on a blank slate; when it is equated to the measured diameter of the largest undegraded crater on known asteroids, peak particle velocities are found to attenuate with the 1.2 1.3 power of distance—less attenuative than strong shocks, and more characteristic of powerful seismic disturbances. This is to be expected, since global degradation can result from seismic (cm s 1) particle velocities on small asteroids. Attenuation, as modeled, appears to be higher on asteroids known to be porous, although these are also bodies for which different crater scaling rules might apply.
No associations
LandOfFree
Critical crater diameter and asteroid impact seismology 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 Critical crater diameter and asteroid impact seismology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Critical crater diameter and asteroid impact seismology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1337117