Magnetic flux emergence and geomagnetic activity, aclose correlation

Details Magnetic flux emergence and geomagnetic activity, aclose correlation Magnetic flux emergence and geomagnetic activity, aclose correlation

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999soph..185..405m&link_type=abstract

Solar Physics, v. 185, Issue 2, p. 405-416 (1999).

Physics

8

Scientific paper

We analyse data of magnetic flux emergence for solar cycles21 and 22, Helios1 interplanetary shocks for cycle21, and sudden storm commencements (SSCs) for cycles 11-22. A dominant variation of 3-year periodicity was found for all three phenomena during cycles21 and 22. This indicates a correlation and a possible influence of the rate of solar magnetic flux emergence to produce the interplanetary phenomena studied in this work; in particular, the suggested role of coronal mass ejections as a means by which magnetic flux and stresses are taken out of the corona seems to be plausible. When taking cycles 11-22 in SSCs, the main periodicity changes to around 4years this may be an indication of flux emergence rate variations over the cycles.

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