Evidence of stratospheric fallout of caesium isotopes from the Chernobyl accident

Details Evidence of stratospheric fallout of caesium isotopes from the Chernobyl accident Evidence of stratospheric fallout of caesium isotopes from the Chernobyl accident

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..327a&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, April 1988, p. 327-330.

Physics

Accidents, Cesium Isotopes, Fallout, Man Environment Interactions, Nuclear Reactor Control, Stratosphere, Nuclear Weapons, Reactor Safety, U.S.S.R.

Scientific paper

The Cs-137 and Cs-134 monthly depositions at Tsukuba through August 1987 are reported, and the origins of caesium isotopes in Spring 1987 are discussed. The monthly Cs-137 deposition increased to 131 Bq/sq m in May 1986 just after the reactor accident at Chernobyl, and thereafter it reached a minimum at the end of 1986. Cs-134 shows a trend similar to the Cs-137 deposition. In 1987, about 80 percent of the Cs-137 fallout came from Chernobyl radioactivity transported into the stratosphere, and 20 percent came from previous atmospheric nuclear tests. It is estimated that several times 0.001 of released caesium isotopes from the Chernobyl reactor have been transported into the stratosphere.

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