Infrasound generation by turbulent convection
Abstract
Low frequency acoustic wave generation is studied taking into account the effect of stratification, inhomogeneity of background velocity profile and temperature fluctuations. It is shown that for the typical parameters of convective storms the dipole radiation related to temperature inhomogeneities is at least of the same order as radiation of Lighthill's quadrupole source. It is also shown that the source related to stratification could have valuable contribution whereas some other sources are shown to be inefficient.
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