isothermal remanent magnetization


Also found in: Acronyms.

isothermal remanent magnetization

[¦ī·sə¦thər·məl ¦rem·ə·nənt ‚mag·nə·tə′zā·shən]
(geophysics)
A spurious magnetization induced by lightning strikes that produce large surface electrical currents. Abbreviated IRM.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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