Mariner 1969 Infrared Radiometer Results: Temperatures and Thermal Properties of the Martian Surface
Abstract
The reduced data of the Mariner 6 and 7 Infrared Radiometer Experiments are presented, along with a discussion of the reduction and calibration procedures. Evidence is presented showing that the surface of Mars is strongly nonhomogeneous in its thermal properties, on scales ranging from those of the classical light and dark areas to the limit of resolution of the radiometers. On the sunlit side, the mean thermal inertia, for admissible bolometric albedos, is 0.006 (cal cm^(-2) sec^(-1/2) °K^(-1)). The dark areas Syrtis Major and Mare Tyrrhenum, observed at night, require thermal inertias as high as 0.010. The temperatures measured over the circular basin Hellas require a bolometric albedo of 0.40 and also a high thermal inertia. The temperature measured over the south polar cap, 148° K, provides evidence that the major constituent of the frost deposit is CO_2.
Additional Information
© 1971 American Astronomical Society. Received 18 May 1971. The late H. Hatzenbeler was instrumental in the construction, testing, and calibration of the radiometers. We also thank D. Schofield and the members of the Mariner 1969 project for their help which made this experiment possible, J. Bennett and S. Law for their help in the reduction of the data, C. Macdonnell and M. Katz for help in preparation of the paper, and Dr. P. Gierasch for valuable discussions of the thermal interactions between the surface and atmosphere of Mars.Attached Files
Published - 1971AJ_____76__719N.pdf
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- CaltechAUTHORS:20170303-104228535
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