Morphology and scaling of impact craters in granular media

Details Morphology and scaling of impact craters in granular media Morphology and scaling of impact craters in granular media

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..mara13003d&link_type=abstract

American Physical Society, Annual APS March Meeting 2003, March 3-7, 2003, , abstract #A13.003

Physics

Scientific paper

We study craters formed when a 2.54 cm diameter steel ball falls into a container of small glass beads. A sequence of crater morphologies is observed depending on the scaled energy of the impact. At the lowest energies a simple bowl-shaped crater forms. At higher energies the craters have more complex morphologies including central peaks and slump terraces at the perimeter. The same morphology sequence is seen in impact craters on the moon and planets. The crater width is proportional to the one-quarter power of the impact energy, as expected when gravity rather than material strength dominates the energetics of the crater formation process.

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