Seasonal recession of Mars' south polar CAP in 1986

Details Seasonal recession of Mars' south polar CAP in 1986 Seasonal recession of Mars' south polar CAP in 1986

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.1337j&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Feb. 10, 1990, p. 1337-1341. Research supported by the National Geogr

Physics

14

Annual Variations, Mars Atmosphere, Mars Photographs, Polar Caps, Satellite Imagery, Mariner 9 Space Probe, Viking Orbiter Spacecraft, Polar Caps, Seasonal Variations, Photographs, Earth-Based Observations, Mars, Telescope Methods, Size, Abundance, Imagery, Comparisons, Cycles, Spacecraft Observations, Orbiters, Mariner 9 Mission, Viking Missions

Scientific paper

Photographs of Mars obtained during the 1986 opposition of the planet have been used to derive the regression curve for the south polar cap between Ls = 190 deg and Ls = 255 deg. The 1986 regression appears to have been unexceptional until after Ls = 230 deg, when it becomes retarded relative to the normal established by the 1971 and 1977 regressions. A study of the data as a function of the filter used suggests that circumpolar clouds were present in early spring, unlike the case in the 1977 recession.

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