Abstract
Measurements of the energy levels of underwater explosions are described. The energy-flux density was determined by an analog method, and the range and depth variations of level were separated. The horizontal range was 47 miles, the detonation depth was varied from 100 to 10 000 ft, and the charge weight varied from 1 to 300 lb. It was found that source-level curves given by E. A. Christian [J. Acoust. Soc. Amer. 42, 905–907(L) (1967)] can be sensibly used to correct energy levels for differences in charge weight and also applied to find the relative transmission loss as a function of depth, when a sequence of charges is fired at various depths.
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