Solar sources of geomagnetic storms

Details Solar sources of geomagnetic storms Solar sources of geomagnetic storms

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992eostr..73...34h&link_type=abstract

EOS (ISSN 0096-3941), vol. 73, no. 3, p. 34.

Physics

Magnetic Storms, Solar Terrestrial Interactions, Magnetic Field Reconnection, Stellar Mass Ejection

Scientific paper

The coronal mass ejections (CMEs) that cause most of the large geomagnetic storms during the active part of the solar cycle are great eruptions of hydrogen gas originating low in the corona that are often associated with eruptive prominences and solar flares. As a CME travels outward through the solar wind toward the earth, shocks are formed and magnetic field lines from the ambient solar wind are draped across the CME's front. When this disturbance reaches the earth, the terrestrial magnetic field is affected. The geoeffectiveness of a disturbance largely depends on how rapidly the interplanetary and geomagnetic fields reconnect.

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