Jan 1, 1963
A theoretical discussion of the influence of gravity on sound propagation from a small source in an isothermal atmosphere where ambient pressure and density decrease exponentially with height. Expressions are derived for the acoustic field in regions relatively close to the source, and the effects of the ground on this field are studied. The findings are applicable to the detection of high-altitude nuclear bursts. A previous report, RM-3478, discussed the effect of the atmosphere's nonuniform temperature on the sound waves.