The impact rate on Earth - PubMed

Affiliations

• PMID: 16286291
• DOI: 10.1098/rsta.2005.1674

Review

The impact rate on Earth

Philip A Bland. Philos Trans A Math Phys Eng Sci. 2005.

Abstract

Recent data, and modelling of the interaction between asteroids and the atmosphere, has defined a complete size-frequency distribution for terrestrial impactors, from meteorite-sized objects up to kilometre-sized asteroids, for both the upper atmosphere and the Earth's surface. Although there remain significant uncertainties in the incidence of specific size-fractions of impactors, these estimates allow us to constrain the threat posed by impacts to human populations. It is clear that impacts remain a significant natural hazard, but uniquely, they are a threat that we can accurately predict, and take steps to avoid.

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