The magnetic fields of active regions. III - Growth and decay of magnetic flux.

Details The magnetic fields of active regions. III - Growth and decay of magnetic flux. The magnetic fields of active regions. III - Growth and decay of magnetic flux.

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..131..239h&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 131, Feb. 1991, p. 239-257.

Physics

9

Magnetic Flux, Magnetic Signatures, Solar Activity, Solar Magnetic Field, Digital Data, Solar Cycles, Solar Observatories

Scientific paper

The Mount Wilson daily magnetogram data set is analyzed to examine the daily growth and decay of active region magnetic fields. Rates of magnetic flux growth and decay, both absolute and in terms of percentage, are studied for various subsets of the data. The daily percentage flux growth of regions is about twice as great as the percentage flux decay. Relationships are found between daily flux change and region size, hemisphere, cycle phase, leading and following polarities, normal and reversed polarity orientation, rotation rate, meridional drift rate and region complexity. In general, growth and decay of flux is faster in more active situations: at cycle maximum or for the more active hemisphere. Leading polarity fields grow and decay more rapidly than following polarity fields. Regions with reversed magnetic polarity orientations have much larger rates of flux growth and decay than do normally oriented regions, but this is an effect of region size. The smallest rates of flux growth and decay are seen for regions rotating nearest the average rate and with the smallest meridional drift rates. These results are discussed in terms of the current understanding of how regions form and decay.

Affiliated with

Also associated with

No associations

Rating

The magnetic fields of active regions. III - Growth and decay of magnetic flux. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The magnetic fields of active regions. III - Growth and decay of magnetic flux., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The magnetic fields of active regions. III - Growth and decay of magnetic flux. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1319720