geomagnetic storm tufân-e zamin-meqnâtisi, ~ zamin-meqnâti Fr.: orage géomagnétique A violent disturbance of the Earth's magnetic field, distinct from regular diurnal variations, following a → solar flare or → coronal mass ejection. → geomagnetic; → storm. |
magnetic storm tufân-e meqnâtisi (#) Fr.: orage magnétique A temporary, worldwide disturbance of the Earth's magnetic field by streams of charged particles from the Sun. Magnetic storms are frequently characterized by a sudden onset, in which the magnetic field undergoes marked changes in the course of an hour or less, followed by a very gradual return to normalcy, which may take several days. |