Index of content:
Volume 134, Issue 5, November 2013
- AEROACOUSTICS, ATMOSPHERIC SOUND 
134(2013); http://dx.doi.org/10.1121/1.4823802View Description Hide Description
A ray-tracing program is used to estimate the refraction of infrasound by the temperature structure of the atmosphere and by hurricanes represented by a Rankine-combined vortex wind plus a temperature perturbation. Refraction by the hurricane winds is significant, giving rise to regions of focusing, defocusing, and virtual sources. The refraction of infrasound by the temperature anomaly associated with a hurricane is small, probably no larger than that from uncertainties in the wind field. The results are pertinent to interpreting ocean wave generated infrasound in the vicinities of tropical cyclones.