PMID: 11607631Feb 20, 1996Paper

Mass extinctions and supernova explosions

Proceedings of the National Academy of Sciences of the United States of America
P J Crutzen, C Brühl

Abstract

In a recent contribution to this journal Ellis and Schramm [Ellis, J. & Schramm, D. N. (1995) Proc. Natl. Acad. Sci. USA 92, 235-238] claim that supernova explosions can cause massive biological extinctions as a result of strongly enhanced stratospheric NOx (NO + NO2) production by accompanying galactic cosmic rays. They suggested that these NOx productions which would last over several centuries and occur once every few hundred million years would result in ozone depletions of about 95%, leading to vastly increased levels of biologically damaging solar ultraviolet radiation. Our detailed model calculations show, however, substantially smaller ozone depletions ranging from at most 60% at high latitudes to below 20% at the equator.

References

Jan 3, 1995·Proceedings of the National Academy of Sciences of the United States of America·J Ellis, D N Schramm

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Citations

Dec 24, 2005·Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life·Vicente MarcanoErnesto Palacios-Prü
Jul 22, 2011·Astrobiology·Lewis R Dartnell
Feb 28, 2002·Physical Review Letters·Narciso BenítezMatilde Canelles

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