Simulations Of Acoustic-Flow Interaction In Spherical Geometry: Steps Toward Validating Helioseismology
Abstract
We simulate acoustic wave interaction with flows in spherical geometry with the specific intent of using them as artificial data for validation of helioseismology. The numerical procedure is pseudo-spectral; we employ a spherical harmonic representation of the spherical surface, compact finite differences in the radial direction and a fourth order Runge-Kutta time stepping scheme. We also excite surface gravity modes, modeling all waves as linear perturbations to the background state so as to gain further insight into wave-flow interaction. Towards validation, we apply techniques of helioseismology to the artificial data to determine the efficacy of the helioseismic inversion procedure. In other words, we are attempting the forward problem.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2005
- Bibcode:
- 2005AGUSMSP11B..11H
- Keywords:
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- 7522 Helioseismology