CALCULATED UNDERWATER PRESSURE LEVELS FROM SONIC BOOMS.
Interim rept. no. 8,
STANFORD RESEARCH INST MENLO PARK CALIF
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The underwater pressure levels have been computed for two typical sonic booms with amplitudes of 2.5 psf. The booms have periods of 0.1 and 0.3 sec and ground speeds of 1,500 and 2,500 ftsec, respectively. The computed levels are compared with ambient levels from various sources. It would appear that at frequencies to which the acoustic receptors of underwater animals are most sensitive, there are often acoustic signals in the ocean that equal or exceed the signals due to sonic booms falling on the surface of the ocean. Author