Hydrodynamic 11-year oscillations in tachocline region

Details Hydrodynamic 11-year oscillations in tachocline region Hydrodynamic 11-year oscillations in tachocline region

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464..283t&link_type=abstract

In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,

Physics

1

Sun, Tachocline

Scientific paper

Shear instability in tachocline region can be the source of increase in intensity of small-scale turbulent flows. Simultaneous action of forcing of shear flow in this region can lead to hydrodynamic long-term (in respect to short-term turbulent velocity fluctuations) oscillations. We present a numerical model that reproduced such oscillations with 11-year period. Forcing of flow gives rise to torsional waves that drift from high to low latitudes.

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