Ambient Sea Noise Measured from 100 to 2240 Meter Depths at Locations Approximately 200 Nautical Miles West of San Diego.
NAVAL UNDERSEA RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CALIF
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Samples of ambient sea noise at depths from 100 to 2240 meters were recorded from a single sensor suspended from NUCs SONODIVER and the spectral level as a function of hydrophone depth was analyzed. These noise data were analyzed from 8 Hz to 5 K Hz in 13 octave bands. Within a stable period of sea noise data, with minimal transient effects, 5 integrations of 2 minutes each were averaged. Examples of the noise spectra at various depths are shown. In general, these data show a decrease in sound pressure spectrum level with increase in depth. Signal - to - noise versus depth is the real objective, of course, but this will follow in later reports. Author
- Physical and Dynamic Oceanography