Dunes in the north polar region of Mars - Their possible formation from low-density sedimentary aggregates

Details Dunes in the north polar region of Mars - Their possible formation from low-density sedimentary aggregates Dunes in the north polar region of Mars - Their possible formation from low-density sedimentary aggregates

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987avest..21..181s&link_type=abstract

Astronomicheskii Vestnik (ISSN 0320-930X), vol. 21, Apr.-June 1987, p. 181-188. In Russian.

Astronomy and Astrophysics

Astronomy

6

Dunes, Polar Regions, Sediments, Aggregates, Clays, Salts, Sublimation

Scientific paper

Low-density aggregates, composed of submicron clay aerosols, have been formed experimentally as the sublimation residues of masses of dust-nucleated ice. These ice-dust mixtures are possible analogues of materials of Martian north polar deposits. Low density (0,002 g/cm3) spheroidal pellets formed from these materials in wind tunnel experiments have been examined as possible candidates for forming north polar dunes on Mars. It is shown that these particles move like sand grains under conditions of saltation and, given a sufficient supply, would be capable of forming the dunes observed in the north circumpolar region of Mars.

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