Dictionary:Rayleigh-Willis relation

The oscillation period $T$ (in seconds) for the bubble effect varies as the cube root of the energy $E$ and inversely as the $5/6th$ power of the pressure.

Rayleigh-Willis relation for representative energy sources. Source depth=9 m. (Courtesy Bendix United Geophysical.)

The relation is

$T=0.450E^{\frac {1}{3}}/(D+33)^{\frac {5}{6}}\quad or$

$T=0.108E^{\frac {1}{3}}/(D'+10)^{\frac {5}{6}},$

where $E$ is the energy in joules, $D$ is the depth in feet, and $D'$ is the depth in meters.

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