Forbush decrease

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For′bush de`crease

(ˈfɔr bʊʃ)
the sudden decrease in the intensity of cosmic rays after an increase in solar activity. Also called For′bush effect`.
[after Scott E. Forbush (b. 1904), U.S. physicist]
References in periodicals archive ?
The team identified 26 Forbush decreases since 1987 that caused the biggest reductions in cosmic rays at low altitudes, and set about looking for the consequences.