Cycle dependence of hemispheric activity

Details Cycle dependence of hemispheric activity Cycle dependence of hemispheric activity

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..859t&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

Sunspot Numbers: Asymmetries

Scientific paper

Data of daily hemispheric Sunspot Numbers are analyzed including the time span 1975-2001. The study of north-south asymmetries concerning solar activity and rotational behaviors is in particular relevant, as it is related to the solar dynamo and the generation of magnetic fields. As diagnostic tools we use wavelets and autocorrelation functions in combination with statistical significance tests that are applied separately to the northern and southern hemisphere. Pronounced differences between the northern and southern rotational periods are obtained. The northern hemisphere shows a rigid rotation of ~27 days which can be followed up to ~15 periods in the autocorrelation function. The signal of the southern hemisphere is strongly attenuated after 3 recurrences showing variable periods in the range ~26-28.5 days. The presence of these periods is not permanent during a cycle suggesting activity pulses in each hemisphere. For the northern hemisphere strong relations to the motions of deeper lying convective structures building up long-living 'active zones' are suggested.

Affiliated with

Also associated with

No associations

Rating

Cycle dependence of hemispheric activity 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 Cycle dependence of hemispheric activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cycle dependence of hemispheric activity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-964103