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Addendum: The density and mass distribution of meteoritic bodies in the neighborhood of the Earth's orbit

1961; American Geophysical Union; Volume: 66; Issue: 4 Linguagem: Inglês

10.1029/jz066i004p01316

2156-2202

Harrison Brown,

Solar and Space Plasma Dynamics

In an earlier paper [Brown, 1960], the author estimated the frequency of meteorite impact upon the earth and moon on the basis of the numbers of observed falls over a period of a century in Japan, India, and Western Europe. All of these areas have had high rural population densities during the entire period. It was recognized, however, that the estimated fall density of 0.32 falls/year/106/km2 was probably low. Recently, in connection with the compilation of maps showing the locations of observed meteorite falls, it has been noticed that approximately the Indian falls have been recovered in the relatively small area of 330,000 km2 embracing most of the United Provinces, the eastern parts of the Punjab and Rajputana, and the western part of Bihar Province. This region is characterized by the large river network that includes the Ganges, the Jumna, the Gogra, the Chauka, the Son, and the Gandak. The region is extremely fertile and level, with the result that it has one of the highest rural population densities in the world—more than 500 persons per square mile.