Space-time relationships in the UV markings on Venus

Details Space-time relationships in the UV markings on Venus Space-time relationships in the UV markings on Venus

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jats...33.1383b&link_type=abstract

Journal of the Atmospheric Sciences, vol. 33, Aug. 1976, p. 1383-1393.

Computer Science

6

Mariner 10 Space Probe, Ultraviolet Radiation, Venus Clouds, Photointerpretation, Planetary Rotation, Spatial Distribution, Time Dependence, Venus Atmosphere

Scientific paper

A group of geometrically rectified composite pictures taken with the Mariner 10 television cameras is presented which shows the temporal development of UV markings at various locations on Venus over the last seven days of the television experiment. The pictures are of two types: one in which the development of a marking is followed in a reference frame that moves with the apparent motion of the atmosphere and a second in which the development of the markings at fixed angular distances from the subsolar meridian can be seen. By comparing these composites with Mercator projections of single Mariner frames, it is shown that: (1) large-scale markings between + and - 45 deg latitude have lifetimes in excess of four days and move en masse with the apparent motion at the equator; (2) smaller-scale markings have lifetimes between 1.5 and 4 days; (3) the polar ring, bowlike waves, circumequatorial belts, and cellular features all exhibit rapid growth, modulation, or propagation characteristics; and (4) a single dark horizontal Y-shaped marking encircles the planet. It is suggested that both the Y and the polar ring are visible manifestations of propagating waves.

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