Torsional oscillations and the solar cycle

Details Torsional oscillations and the solar cycle Torsional oscillations and the solar cycle

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..110...35s&link_type=abstract

(Solar Cycle Workshop, 1st, Pasadena, CA, Aug. 17-20, 1986) Solar Physics (ISSN 0038-0938), vol. 110, no. 1, 1987, p. 35-49.

Physics

38

Solar Activity, Solar Cycles, Solar Magnetic Field, Solar Oscillations, Lorentz Force, Northern Hemisphere, Torsional Vibration

Scientific paper

Both the net torsional pattern and its derivative, the shear oscillation, are studied in relation to the solar activity cycle using data collected at Mount Wilson from 1967 - 1986. The shear zones run from pole to equator, clearly indicating that the cycle begins at the poles. Total transit takes roughly 18 years, and the active zones emerge to span the zones of shear enhancement after the latter have reached sunspot latitudes. This 18-yr transit time is seen as the proper duration of the cycle: successive cycles begin roughly 11 years apart and thus overlap. The polar origin of the torsional pattern is found to be phenomenologically connected with variations in the polar field amplitude. In a general discussion of torsional oscillations and their role in the solar cycle, the "net pattern" and "k = 2 wave" interpretations of the torsional phenomenon are contrasted and reasons for preferring the net pattern are presented. A model is proposed in which the torsional oscillations are the surface signature of an azimuthal convective-roll pattern. This model could provide the original Babcock model with a mechanism for trapping and further amplifying the toroidal field.

Affiliated with

Also associated with

No associations

Rating

Torsional oscillations and the solar cycle 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 Torsional oscillations and the solar cycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Torsional oscillations and the solar cycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1599783