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Forward modeling for local helioseismology

Presented by: 
AC Birch [Colorado Research Associates]
Date: 
Friday 10th September 2004 - 16:40 to 17:05
Venue: 
INI Seminar Room 1
Abstract: 

In order to interpret measurements made with local helioseismology it is crucial to understand the sensitivity of these measurements to different types of perturbations to a solar model. Local helioseismic measurements are sensitive not only to subsurface mass flows, sound-speed variations, and magnetic field, but also to local changes in the wave damping and excitation rates. I will show example calculations of the sensitivity of travel-times measured by time-distance helioseismology and phase shifts measured by acoustic holography to flows, sound speed perturbations, and local changes in the wave excitation and damping rates.

University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons