Open AccessMobilization of dust on the Mars surface by the impact of small cosmic bodies
Author(s) -
Rybakov V. A.,
Nemtchinov I. V.,
Shuvalov V. V.,
Artemiev V. I.,
Medveduk S. A.
Publication year - 1997
Publication title -
journal of geophysical research: planets
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/96je03569
Subject(s) - shock wave , martian , physics , mars exploration program , outgassing , atmosphere of mars , thermal , mechanics , atmospheric sciences , astrobiology , geophysics , astronomy , meteorology
The Impact of small cosmic bodies on the Martian surface may be the cause of local sand storms. The interaction of the shock waves with the thermal layer (created by the action of thermal radiation to the surface) leads to the formation of a high‐velocity jet moving along the surface. A reverse vortex in the precursor facilitates dust lifting. This and other factors lead to the dust rising: outgassing of the surface layer due to heating by the radiation impulse; intrusion of the high‐pressure atmospheric gas behind the shock wave into the regolith and dust layer and subsequent blow off in the rarefaction wave; and formation of jets moving along the surface due to interaction of the ballistic wave with the blast wave and due to erosion by high‐velocity impulsive winds behind the shock wave of the explosion. The results of preliminary theoretical simulations and laboratory modeling are presented.