Physics
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...28..565c&link_type=abstract
Icarus, vol. 28, Aug. 1976, p. 565-578.
Physics
7
Brightness Temperature, Mercury (Planet), Planetary Surfaces, Surface Temperature, Flyby Missions, Infrared Radiometers, Inhomogeneity, Mariner 10 Space Probe, Planetology, Temperature Distribution
Scientific paper
Mariner 10 infrared brightness temperatures of the surface of Mercury at 11 and 45 microns are presented. The data were obtained during the first flyby along a near-equatorial swath extending from 17 hours local time through local midnight to 9 hours local time. For an assumed emissivity of 0.9, derived surface thermal inertias are between 0.0015 and 0.0031 cal/sq cm/sq root sec/K and the implied minimum predawn surface kinetic temperature for the warm pole at longitude 270 deg is near 93 K. Several pronounced thermal inhomogeneities were seen, one of which appears to coincide with a region of high radar reflectivity. The derived thermal properties, the electrical skin depth, and loss tangent fall within the range of values found on the moon.
Chase C. Jr. S.
Miner Ellis D.
Morrison Douglas
Muench Gus
Neugebauer Gernot
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