Simulations of Acoustic Emission by Turbulence

Acoustic emission from solar granulation is thought to be relatively localized and episodic, emanating largely as relatively discrete wavepackets emitted from convective plumes falling into the solar interior from near-surface layers at which granular convec-tion takes place. This quality, if it actually does characterize seismic emission from the quiet Sun, is crucial, in certain respects, to meaningful diagnostics of how waves are gen-erated by turbulence. Local helioseismology has developed a formidable diagnostic tool case to test this hypothesis and similar questions regarding wave generation in the upper convection zone. Comparative seismic diagnostics applied both to the quiet Sun and to simulations of convection on powerful computing facilities oer a much needed control facility for this purpose. I