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  Monitoring the global ocean through underwater acoustics
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  Acoustic Monitoring Program: Sounds (examples)  

Low-frequency sound in the ocean can be "viewed" in the form of time versus frequency "spectrograms" (warm colors represent strong energy) or "listened to" if the natural sound is raised to human hearing by "speeding up" the original signals. These sample sounds represent seismic and biological sources, as well as sounds of unknown origin.



seismic spectrogram whale spectrogram airgun spectrogram mystery spectrogram

audio iconListen
Tremor South of Japan
speed 16x
wav: 1.18MB

audio iconListen
Blue Whale NE Pacific
speed 10x wav:384KB
audio iconListen
speed 10x wav:809KB
audio iconListen Equatorial Pacific unknown source speed 16x
wav: 29K

Links to each sound category:

Use QuickTime player to listen to the sounds.

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