Abstract
The source strength for far-field Rayleigh-wave excitation is calculated as a function of yield and height of burst for intermediate-altitude nuclear detonations (height of burst approximately 20–100 km). In general the source strength, and hence the far-field Rayleigh-wave amplitude, has a maximum (for a given yield) at a particular burst height. The altitude at which the maximum occurs depends on the detonation yield and on the Rayleigh-wave period under consideration. The maximum is more pronounced for the longer Rayleigh-wave periods. For intermediate-altitude detonations, the variation of far-field Rayleigh-wave amplitude with yield is found to lie between the 1/2 and the 2/3 power of the yield, depending on the burst altitude and on the Rayleigh-wave period being considered.
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