Impact-Induced Seismic Activity on Asteroid 433 Eros: A Surface Modification Process

Details Impact-Induced Seismic Activity on Asteroid 433 Eros: A Surface Modification Process Impact-Induced Seismic Activity on Asteroid 433 Eros: A Surface Modification Process

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sci...306.1526r&link_type=abstract

Science, Volume 306, Issue 5701, pp. 1526-1529 (2004).

Physics

32

Scientific paper

High-resolution images of the surface of asteroid 433 Eros revealed evidence of downslope movement of a loose regolith layer, as well as the degradation and erasure of small impact craters (less than ~100 meters in diameter). One hypothesis to explain these observations is seismic reverberation after impact events. We used a combination of seismic and geomorphic modeling to analyze the response of regolith-covered topography, particularly craters, to impact-induced seismic shaking. Applying these results to a stochastic cratering model for the surface of Eros produced good agreement with the observed size-frequency distribution of craters, including the paucity of small craters.

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