Forbush decrease(redirected from Forbush effect)
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Forbush decrease[′fȯr‚bu̇sh di′krēs]
A sudden decrease in cosmic-ray intensity which occurs a day or two after a solar flare, and at the same time as the commencement of magnetic storms and auroral activity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.