A search for clustering among the meteoroid impacts detected by the Apollo lunar seismic network

Details A search for clustering among the meteoroid impacts detected by the Apollo lunar seismic network A search for clustering among the meteoroid impacts detected by the Apollo lunar seismic network

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...91..315o&link_type=abstract

Icarus (ISSN 0019-1035), vol. 91, June 1991, p. 315-325.

Physics

36

Hypervelocity Impact, Lunar Seismographs, Lunar Surface, Meteorite Collisions, Meteoroid Showers, Earth-Moon System, Fireballs, Mass Distribution, Spatial Distribution

Scientific paper

A difference is noted between meteoroids whose masses lie above and below 1 kg in temporal meteoroid-impact clusterings detected by the Apollo lunar seismic network; while the former exhibit little temporal clustering, small ones show strong clusterings identifiable with terrestrial meteor showers. This finding suggests a different type and origin for the two meteoroid sizes; the small may be primarily cometary, while the large may derive from near-earth asteroids and short-period comets. It is speculated that the June, 1975, and January, 1977 swarms of large meteoroids may contain high-density meteoritic objects interpretable as meteorite streams.

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