Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975s%26t....49..222d&link_type=abstract
Sky and Telescope, vol. 49, Apr. 1975, p. 222, 223.
Astronomy and Astrophysics
Astronomy
Albedo, Mars Surface, Periodic Variations, Planetary Mapping, Annual Variations, Astronomical Photography, Secular Variations, Surface Properties
Scientific paper
Surface albedo variations in the region encompassing Solis Lacus, Thaumasia, Claritas, and Daedelia are observed from photographs taken in 1941, 1969 (by Mariner 7), 1971, and 1973, and from maps drawn in 1877 and 1926. Similarities and differences among the photographs and maps are discussed, and it is noted that the variations are not random, but tend to repeat, sometimes after long time intervals.
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