Journal articles
Modes of ejecta emplacement at Martian craters from laboratory experiments of an expanding vortex ring interacting with a particle layer
Abstract : Ejecta morphologies of many Martian craters indicate fluidized emplacement which differs from ballistic emplacement in dry, airless environments. Double Layered Ejecta craters possess particularly interesting ejecta morphologies: two lobes and radial lineations on their surface, which probably result from gas-dominated radial flow during the emplacement. To examine how a radial flow interacts with surface particles to generate some of the observed morphologies on Mars, we have conducted water tank experiments in which a vortex ring encounters a particle layer. The threshold of particle motion and three interaction modes are described by two dimensionless numbers: particle Shields' parameter and particle Reynolds number. Our results show that gas-dominated flows are possible during cratering and could be used to constrain the ancient Martian environment from observations.
Cited literature [16 references]
https://hal-insu.archives-ouvertes.fr/insu-01270088
Contributor : Eva Fareau Connect in order to contact the contributor
Submitted on : Thursday, March 10, 2016 - 11:03:26 AM
Last modification on : Tuesday, November 16, 2021 - 4:57:09 AM
Long-term archiving on: : Monday, June 13, 2016 - 9:27:40 AM
Contributor : Eva Fareau Connect in order to contact the contributor
Submitted on : Thursday, March 10, 2016 - 11:03:26 AM
Last modification on : Tuesday, November 16, 2021 - 4:57:09 AM
Long-term archiving on: : Monday, June 13, 2016 - 9:27:40 AM
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