Solar-terrestrial relations: flare and solar wind effects.

Details Solar-terrestrial relations: flare and solar wind effects. Solar-terrestrial relations: flare and solar wind effects.

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989isvg.conf.....l&link_type=abstract

42. AGARD Symposium on Ionospheric Structure and Variability on a Global Scale and Interactions with Atmosphere and Magnetospher

Astronomy and Astrophysics

Astrophysics

2

Solar-Terrestrial Relations

Scientific paper

The existence of solar-terrestrial relations is clearly shown during solar flare events. During these catastrophic events the enhanced flux of XUV solar radiation as well as the sudden outburst of energetic solar cosmic ray particles induce a series of well identified effects in the Earth's magnetic field, in the terrestrial ionosphere and in the upper atmosphere. These geophysical effects and their solar origin are reviewed in the first part of this article. Solar activity also perturbs the distribution of plasma and magnetic fields in the corona and in the interplanetary medium. It produces large-scale and small-scale inhomogeneities in the expanding solar wind flow which then interacts with the Earth's magnetic field. The resulting variability of the impinging solar wind plasma triggers additional geophysical effects in the magnetosphere, in the terrestrial ionosphere and in the upper atmosphere. Some of the geophysical consequences of this non-stationary interaction of the solar wind with the geomagnetic field, and, of impulsive penetration of small scale solar wind plasma irregularities into the magnetosphere are reviewed in the second part of this article (e.g. polar cusp fields, currents, and related ionospheric irregularities).

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