Crustal Asymmetry of the Moon: Necessary Consequence of Random Impacts

Details Crustal Asymmetry of the Moon: Necessary Consequence of Random Impacts Crustal Asymmetry of the Moon: Necessary Consequence of Random Impacts

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998lpico.957...46t&link_type=abstract

Origin of the Earth and Moon, Proceedings of the Conference held 1-3 December, 1998 in Monterey, California. LPI Contribution N

Other

Center Of Mass, Lunar Evolution, Selenology, Lunar Crust, Lunar Core, Lunar Geology, Meteorite Collisions, Random Processes, Displacement, Thickness, Displacement Measurement, Asymmetry

Scientific paper

The geometric center of the Moon is known to be offset from the center of mass by about 2 km. Origin of this displacement has been an important aspect in discussing the crust-mantle evolution of the Moon. The displacement is apparently caused by the difference of crustal thickness between the farside and nearside. Various mechanisms such as a special convective flow in the magma ocean (an endogenic process) or single large or multiple impacts (exogenic processes) have been proposed as having caused this difference. In this study, however, we show that such crustal asymmetry is just a necessary consequence of random impacts on the Moon. In other words, it does not require any special forming mechanism.

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