The 22-year cyclicity of the solar-wind velocity and geomagnetic activity

Details The 22-year cyclicity of the solar-wind velocity and geomagnetic activity The 22-year cyclicity of the solar-wind velocity and geomagnetic activity

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ge%26ae..24..300c&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 24, Mar.-Apr. 1984, p. 300-303. In Russian.

Physics

1

Geomagnetism, Periodic Variations, Solar Cycles, Solar Wind Velocity, Interplanetary Magnetic Fields, Magnetic Variations, Maxima, Solar Flares

Scientific paper

An analysis of data on the 22-year cyclicity of the solar-wind velocity shows that geomagnetic activity in even and odd cycle solar cycles differs with respect to maximum values of geomagnetic activity. In even cycles, this activity is mainly determined by two recurrent high-velocity streams and the two-sector IMF structure; in odd cycles, it is determined by the total contribution of the four recurrent and flare high-velocity streams and the four-sector IMF structure. Since both maxima of geomagnetic activity are connected with the sector structure and the recurrent high-velocity streams, it can be assumed that it is the recurrent streams and not the flare streams which are the most geoeffective agent.

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