The Tunguska Explosion of 1908
by Mark W. Brazo and Steven A. Austin
Origins 9(2):82-93 (1982).
All contents © Copyright 1984 by Geoscience Research Institute.
A catastrophe may be defined as a natural event of large magnitude (energy), short duration, wide extent and low frequency. The Tunguska (pronounced: toon-goos'-ka) explosion of 1908 fulfills all five parts of the above definition and can be considered the epitome of a cosmic impact catastrophe.
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