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Preliminary Infrared Radiometry of the Night Side of Mercury from Mariner 10

Chase, S. C. and Miner, E. D. and Morrison, D. and Münch, G. and Neugebauer, G. and Schroeder, M. (1974) Preliminary Infrared Radiometry of the Night Side of Mercury from Mariner 10. Science, 185 (4146). pp. 142-145. ISSN 0036-8075. doi:10.1126/science.185.4146.142.

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The infrared radiometer on Mariner 10 measured the thermal emission from the planet with a spatial resolution element as small as 40 kilometers in a broad wavelength band centered at 45 micrometers. The minimum brightness temperature (near local midnight) in these near-equatorial scans was 100°K. Along the track observed, the temperature declined steadily from local sunset to near midnight, behaving as would be expected for a homogeneous, porous material with a thermal inertia of 0.0017 cal cm^(-2) sec^(-½) °K^(-1), a value only slightly larger than that of the moon. From near midnight to dawn, however, the temperature fluctuated over a range of about 10°K, implying the presence of regions having thermal inertia as high as 0.003 cal cm^(-2) sec^(-½) °K^(-1).

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Additional Information:© 1974 American Association for the Advancement of Science. 31 May 1974. We thank the entire Mariner team, both at Jet Propulsion Laboratory and at Santa Barbara Research Center, for making the mission successful. We thank J. Bennett for help with the data analysis, J. Engel for his work as leader of the radiometry group at SBRC, and T. Clarke for his work as instrument engineer.
Issue or Number:4146
Record Number:CaltechAUTHORS:20151112-113949944
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Official Citation:Preliminary Infrared Radiometry of the Night Side of Mercury from Mariner 10 S. C. Chase, E. D. Miner, D. Morrison, G. Münch, G. Neugebauer, and M. Schroeder Science 12 July 1974: 185 (4146), 142-145. [DOI:10.1126/science.185.4146.142]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:62069
Deposited By: Ruth Sustaita
Deposited On:12 Nov 2015 20:51
Last Modified:10 Nov 2021 22:57

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