north-south effect

north-south effect

[¦nȯrth ¦sau̇th i‚fekt]
(geophysics)
An effect whereby the intensity of cosmic radiation incident from the north is somewhat greater than that from the south in the Northern Hemisphere, and vice versa.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.