High- And Low-Latitude Solar Activities: Who Leads Whom In Time Phase?

Details High- And Low-Latitude Solar Activities: Who Leads Whom In Time Phase? High- And Low-Latitude Solar Activities: Who Leads Whom In Time Phase?

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006soph..236..185l&link_type=abstract

Soar Physics, vol. 236, Issue 1, p.185-197

Physics

4

Scientific paper

Using the data from observations of polar faculae by the National Astronomical Observatory of Japan from July 1951 to December 1998, we investigate whether there is a time lag between high-latitude solar activity and low-latitude solar activity. The cross-correlation analysis of the smoothed monthly numbers of the polar faculae with the smoothed monthly sunspot numbers shows that, high-latitude solar activity should lead low-latitude solar activity in time phase. The periodic characteristics of both of them also indicate that high-latitude activity evidently leads low-latitude activity.

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