Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975moon...14..263c&link_type=abstract
The Moon, vol. 14, Oct. 1975, p. 263-289.
Astronomy and Astrophysics
Astronomy
11
Abundance, Heat Flux, Heat Generation, Lunar Surface, Uranium, Astronomical Models, Chondrites, Lunar Evolution, Lunar Soil, Steady State, Surface Temperature, Temperature Distribution, Thermal Conductivity, Thermodynamic Equilibrium
Scientific paper
Lunar heat flow observations at the Apollo 15 and 17 sites can be interpreted to imply bulk U concentrations for the moon of 5 to 8 times those of normal chondrites and 2 to 4 times terrestrial values inferred from the earth's heat flow and the assumption of thermal steady state between surface heat flow and heat production. A simple model of nearsurface structure that takes into account the large difference in (highly insulating) regolith thickness between mare and highland provinces is considered. This model predicts atypically high local values of heat flow near the margins of mare regions - possibly a factor of 10 or so higher than the global average. A test of the proposed model using multifrequency microwave techniques appears possible wherein heat flow traverse measurements are made across mare-highland contacts. The theoretical considerations discussed here urge caution in attributing global significance to point heat-flow measurements on the moon.
Conel James E.
Morton Jeffrey B.
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