On the periodicity hypothesis of the ages of large impact craters

Details On the periodicity hypothesis of the ages of large impact craters On the periodicity hypothesis of the ages of large impact craters

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.334..369y&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 334, Issue 2, pp. 369-373.

Astronomy and Astrophysics

Astronomy

8

Methods: Numerical, Comets: General, Solar System: General

Scientific paper

An analysis is made of the periodicity hypothesis of the ages of large craters, based on the compilation by Grieve with the addition of recently identified craters. A method earlier proposed by Broadbent is used to derive a period, and the significance of the derived period is tested by a Monte Carlo experiment. In accordance with the result of Stothers, the ages of large craters (D>30km) are shown to exhibit a period close to 37.5Myr. Monte Carlo experiments show, however, that the derived period is far from being statistically significant. A subset of crater data earlier adopted by Napier for the purpose of similar investigation is also tested, and it is shown that they also exhibit a similar period at an almost identical level of confidence. A brief discussion is made of the relation between the derived period and that associated with faunal mass extinctions.

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