Evolution of a meteorite crater as a process of random displacements

Details Evolution of a meteorite crater as a process of random displacements Evolution of a meteorite crater as a process of random displacements

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986metik..40...82z&link_type=abstract

Evolution of a meteorite crater as a process of random displacements Transl. into ENGLISH from Meteoritika, Adademiya Nauk SSSR

Physics

Aging (Materials), Craters, Earth (Planet), Impact Damage, Meteoritic Damage, Displacement, Geochronology, Random Variables

Scientific paper

An examination of the ages and sizes of 114 terrestrial impact craters shows that their aging kinetics can be described by the diffusion laws. The macrodiffusion coefficient which determines random displacements of mineral masses on the Earth has a mean value of 0.02 sq m/year. The amount of matter in a crater that contains information about the impact event decreases with time according to the 1/T law. The basic characteristic parameter of a crater is its initial area, inasmuch as sufficiently large craters are nearly surficial formations. The relaxation time of a crater is proportional to its initial area.

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