One of two regions of the Earth with very high magnetic field strength, taken to be the points at which a line, drawn between the poles of an idealized magnetic dipole generating the Earth’s magnetic field and extending out in both directions, would cross the earth’s surface. The north pole of a magnet, such as a compass needle, is attracted to the geomagnetic north pole because the Earth’s north pole is actually a magnetic south pole (and its geomagnetic south pole is a magnetic north pole). Magnetic reversals over the course of the Earth’s history have switched the polarities of the geomagnetic poles many times. The geomagnetic poles are close to the geographical North and South poles, and to the Earth’s magnetic poles. See also magnetic pole.
- Geomagnetic reversal
geomagnetic reversal See magnetic reversal.
noun 1. . noun a worldwide disturbance of the earth’s magnetic field induced by solar flares, solar wind, or sunspot activity; also called [magnetic storm] Word Origin 1836-41
[jee-oh-mag-ni-tiz-uh m] /ˌdʒi oʊˈmæg nɪˌtɪz əm/ noun 1. the earth’s magnetic field and associated phenomena. 2. the branch of geophysics that studies such phenomena. /ˌdʒiːəʊˈmæɡnɪˌtɪzəm/ noun 1. the magnetic field of the earth 2. the branch of physics concerned with this geomagnetism (jē’ō-māg’nĭ-tĭz’əm)
[jee-uh-man-see] /ˈdʒi əˌmæn si/ noun 1. divination by geographic features or by figures or lines. /ˈdʒiːəʊˌmænsɪ/ noun 1. prophecy from the pattern made when a handful of earth is cast down or dots are drawn at random and connected with lines n. c.1400, agent noun from geomancy. n. “art of divination by means of signs […]