EARTH SCIENCE SERVICES > ENVIRONMENTAL ADVISORIES > GEOLOGICAL ADVISORIES > GEOMAGNETISM
The magnetic phenomena exhibited by the Earth and it's atmosphere; also the
study of such phenomena.
A Geomagnetic Advisory will incorporate information on geomagnetic storms that
may interfere with some technology, including satellite communications.
Jackson, Julia A. (1997) Glossary of Geology, 4th Edition. Alexandria,
VA:American Geological Institute, 769 p.
See http://www.geolab.nrcan.gc.ca/geomag/e_effects.html for examples.