Studies of solar magnetic fields. II - The magnetic fluxes

Details Studies of solar magnetic fields. II - The magnetic fluxes Studies of solar magnetic fields. II - The magnetic fluxes

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974soph...38...59h&link_type=abstract

Solar Physics, vol. 38, Sept. 1974, p. 59-67.

Physics

62

Magnetic Flux, Magnetic Measurement, Solar Magnetic Field, Data Recording, Magnetometers, Polarity, Spatial Distribution, Time Dependence

Scientific paper

Magnetic flux data from the Mount Wilson magnetograph are examined over the interval 1967-1973. The total flux in the north is greater than that in the south by about 7% over this interval, reflecting a higher level of activity in the northern hemisphere. Close to 95% of the total flux is confined to latitudes equatorward of 40 degrees, which means that close to 95% of the flux cancels with flux of opposite polarity before it can migrate poleward of 40 degrees. It is pointed out that a consequence of this flux distribution is that ephemeral regions must make a negligible contribution to the long-term large-scale magnetic flux distribution. A broad peak in the total flux may be seen centered about one year after activity maximum in the north below 40 degrees. In the south there is a very sharp increase in flux about the same time. In the north, several poleward migrations of flux may be seen.

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