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.agar.....l&link_type=abstract

In AGARD, Ionospheric Structure and Variability on a Global Scale and Interactions with Atmosphere and Magnetosphere 11 p (SEE N

Physics

Geophysics

Solar Flares, Solar Terrestrial Interactions, Solar Wind, Wind Effects, Atmospheric Models, Earth Magnetosphere, Extreme Ultraviolet Radiation, Geophysics

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. Solar activity also perturbs the distribution of plasma and magnetic fields in the corona and in the interplanetary medium. Large-scale (low frequency) and small-scale (high frequency) inhomogeneities (perturbations) are produced 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 (e.g. polar cusp fields, currents, and related inospheric irregularities).

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