Latitudinal Dependence Of Sound Speed At The Base Of The Convection Zone

Details Latitudinal Dependence Of Sound Speed At The Base Of The Convection Zone Latitudinal Dependence Of Sound Speed At The Base Of The Convection Zone

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.2220b&link_type=abstract

American Astronomical Society Meeting 210, #22.20; Bulletin of the American Astronomical Society, Vol. 39, p.127

Computer Science

Sound

Scientific paper

The position of the base of the solar convection zone has been measured with great precision using helioseismology to be at an average depth of 0.713R ± 0.001. We have analyzed helioseismic data from SoHO/MDI and GONG to determine whether or not there is any asphericity at that depth. We find a change in sound speed with latitude located at the base of the convection zone. This difference is most pronounced at a latitude of 60°, at the peak of the solar activity cycle. There is little change with latitude seen at low activity. Further work is required to judge the significance of the result.

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