Variations of Martian surface albedo: Evidence for yearly dust deposition and removal

Details Variations of Martian surface albedo: Evidence for yearly dust deposition and removal Variations of Martian surface albedo: Evidence for yearly dust deposition and removal

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..167c&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 167-169 (SEE N87-23341 16-91)

Physics

Geophysics

Albedo, Annual Variations, Deposition, Dust Storms, Mars Surface, Mars (Planet), Mars Atmosphere, Seasons, Thermal Mapping, Viking Spacecraft

Scientific paper

The purpose is to determine the degree, spatial distribution and timing of the deposition and removal of dust storm fallout, and to relate the current patterns of dust deposition and removal to the long-term evolution of the Martian surface. Southern Hemisphere dark areas are found to quickly return to close to their pre-storm albedos, suggesting rapid removal of any dust that was deposited. Northern Hemisphere dark regions are brighter post-storm, but gradually darken to pre-storm levels over the Mars year. In doing so they act as local sources of dust during otherwise clear periods. Dust does not appear to be removed from bright regions, resulting in the 1 to 2 m thick deposits observed today.

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