NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
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 0.0000031 watts/sqcm was measured and at the Apollo 17 site a value of 0.0000022 watts/sqcm was determined. Both measurements have uncertainty limits of + or - 20% 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
19750006612
Document Type
Conference Paper
Authors
Langseth, M. G. (Lamont-Doherty Geological Observatory Palisades, NY, United States)
Keihm, S. J. (Lamont-Doherty Geological Observatory Palisades, NY, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1974
Subject Category
LUNAR AND PLANETARY EXPLORATION
Report/Patent Number
CONTRIB-2141
REPT-215
NASA-CR-141255
Meeting Information
Soviet-AM. Conf. on the Cosmochem. of the Moon and Planets,(Moscow)
Funding Number(s)
CONTRACT_GRANT: NAS9-6037
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

NameType 19750006612.pdf STI