Cratering asymmetry on the Moon: A new insight from the Apollo Passive Seismic Experiment

Details Cratering asymmetry on the Moon: A new insight from the Apollo Passive Seismic Experiment Cratering asymmetry on the Moon: A new insight from the Apollo Passive Seismic Experiment

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..646k&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.646

Physics

Scientific paper

The synchronous rotation of the Moon can lead to an asymmetry in the cratering rate between the leading and trailing hemispheres of the lunar orbital motion. We examined this possibility with Apollo seismic data which provides us with the information of the current bombardments and small impact events of meter-size craters. The data implies that the number density of impacts on the leading hemisphere is substantially higher than that on the trailing hemisphere. This indicates that the cratering asymmetry predicted from historical cratering records also exists in the current low magnitude impacts.

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