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Published online by Cambridge University Press: 14 March 2005
We present results of a study of the morphology and evolution of active regions using solar acoustic holography. These include acoustic signatures of large far-side active regions and their relationship to near-side activity indices a half rotation before and after the farside image, and the direct comparison of near-side acoustic signatures with the standard activity indicators, not only in their own right but also to calibrate the farside acoustic signature.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html