Periodicity in the crater formation rate and implications for astronomical modeling

Details Periodicity in the crater formation rate and implications for astronomical modeling Periodicity in the crater formation rate and implications for astronomical modeling

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992cemda..54..161y&link_type=abstract

Celestial Mechanics and Dynamical Astronomy (ISSN 0923-2958), vol. 54, no. 1-3, p. 161-178.

Astronomy and Astrophysics

Astronomy

4

Astronomical Models, Meteorite Craters, Periodic Variations, Planetary Craters, Geochronology, Molecular Clouds, Monte Carlo Method, Planetary Surfaces, Radioactive Age Determination

Scientific paper

A criterion proposed by Broadbent (1955, 1956) is used to reinvestigate the claim for periodicity in crater formation; data sets of Rampino and Stothers (1986) and of Grieve (1987) are shown to satisfy the periodicity criterion (about 30 Myr). A Monte Carlo simulation is employed to obtain constraints for the dispersion sigma(Myr) from an exact periodicity and for the periodic components (Flp) in the signals for their periodicity to be detected. It is found that for sigma of 5, 6, and 7 Myr, Flp would have to be 40 percent or greater, 60 percent or greater, and 80 percent or greater, respectively. These constraints are used to discuss whether the GMC perturbations can give rise to the periodicity in the impact events.

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