Time-Distance Helioseismic Imaging of a Numerically Simulated Solar Tachocline

Details Time-Distance Helioseismic Imaging of a Numerically Simulated Solar Tachocline Time-Distance Helioseismic Imaging of a Numerically Simulated Solar Tachocline

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..416...25z&link_type=abstract

Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21 ASP Conference Series, Vol. 416, proceedings

Computer Science

Sound

1

Scientific paper

The solar tachocline, located near the bottom of the convection zone, is a very important region for solar dynamics and the solar dynamo. We develop a time-distance helioseismology technique, including both surface- and deep-focusing measurements, together with inversions, to derive the interior image of the sound speed perturbation at the tachocline with a latitudinal dependence. We test the technique on numerically simulated global wavefields and find that the technique is able to recover the major features that are preset in the numerical model, though a bit more widespread into the deeper interior. This measurement and inversion technique will be applied to MDI observations to derive the structures of solar tachocline.

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