Multi-channel OLA Inversion for Local Helioseismology
Abstract
We present preliminary results of a three-dimensional inversion for local helioseismology, in particular utilizing the time-distance technique. This inversion is unique in that in combines a Fourier-space multi-channel deconvolution with the optimally localized averages (OLA) method. The result is a very computationally efficient procedure that is fully parallelizable and suited for large-scale inversions needed for future studies. A simple example of the inversion is shown using point-to-point Born approximation kernels for sound-speed perturbations and the travel-time noise covariance. A step-by-step comparison is shown with a recently developed real-space OLA inversion to demonstrate the benefits of a Fourier-space formulation.
- Publication:
-
AAS/Solar Physics Division Meeting #40
- Pub Date:
- May 2009
- Bibcode:
- 2009SPD....40.0714J