Solar Physics

, Volume 251, Issue 1–2, pp 453–468 | Cite as

Effects of Random Flows on the Solar f Mode: I. Horizontal Flow

HELIOSEISMOLOGY, ASTEROSEISMOLOGY, AND MHD CONNECTIONS

Abstract

We examine the effect of random horizontal flows on the dispersion relation of high-degree solar f modes. We follow the approach of Murawski and Roberts (Astron. Astrophys.272, 595, 1993), addressing some limitations of that paper, and extending the results to include damping and to apply for a general turbulent spectrum. We find a reduction in frequency below the classical result that is about three times that observed. For large wavenumber the damping rate is larger than the frequency correction by a factor of the order of the nondimensional wavenumber, which appears to be consistent with observation.

Keywords

Surface gravity waves Turbulence Dispersion relation Damping 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Solar Physics and Space Plasma Research Centre, Department of Applied MathematicsUniversity of SheffieldSheffieldUK

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