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In-situ measurements of lunar heat flowDuring the Apollo program two successful heat flow measurements were made in situ on the lunar surface. At the Apollo 15 site a value of .0000031 W/sq cm was measured, and at the Apollo 17 site a value of .0000022 W/sq cm was determined. Both measurements have uncertainty limits of + or - 20 percent and have been corrected for perturbing topographic effects. The apparent difference between the observations may correlate with observed variations in the surface abundance of thorium. Comparison with earlier determinations of heat flow, using the microwave emission spectrum from the moon, gives support to the high gradients and heat flows observed in situ.
Document ID
19780005001
Document Type
Conference Paper
Authors
Langseth, M. B. (Lamont-Doherty Geological Observatory Palisades, NY, United States)
Keihm, S. J. (Lamont-Doherty Geological Observatory Palisades, NY, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Publication Information
Publication: NASA, Washington The Soviet-Am. Conf. on Cosmochem. of the Moon and Planets, pt. 1
Subject Category
ASTROPHYSICS
Report/Patent Number
CONTRIB-2141
Funding Number(s)
CONTRACT_GRANT: NAS9-6037
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19780004982Analytic PrimaryThe Soviet-American Conference on Cosmochemistry of the Moon and Planets, Part 1