Thermal movement of the regolith

Details Thermal movement of the regolith Thermal movement of the regolith

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976lpsc....7.1073d&link_type=abstract

In: Lunar Science Conference, 7th, Houston, Tex., March 15-19, 1976, Proceedings. Volume 1. (A77-34651 15-91) New York, Pergamon

Computer Science

Apollo 17 Flight, Lunar Landing Sites, Lunar Rocks, Moonquakes, Seismographs, Thermal Stresses, Diurnal Variations, Lunar Soil, Lunar Surface, Seismology, Thermal Shock

Scientific paper

High-frequency seismic events observed at the Apollo landing sites indicate that the regolith moves in response to diurnal variations of thermal stresses. While these events (thermal moonquakes) are observed by each of the Passive Seismic Experiment stations, the location of their sources was not possible until they were observed by the Lunar Surface Profiling Experiment (LSPE) array at the Apollo 17 site. Comparison of source locations with topographic features near the LSPE array indicate that thermal moonquakes are associated to some degree with large rocks and to a larger degree with craters. They are not associated with man-made disturbances of the lunar surface. It is suggested that thermal moonquakes are the seismic expression of a phenomenon that is actively degrading slopes on the lunar surface.

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