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Monitoring the global ocean through underwater acoustics
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Acoustics Program:




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The Acoustic Monitoring Project of the VENTS Program has performed continuous monitoring of ocean noise since August, 1991 using the U.S. Navy SOund SUrveillance System (SOSUS) network and autonomous underwater hydrophones.

Hot Topics ->
Oregon Offshore Earthquakes: Oregon Quakes (4/14/08)
OPB Oregon Field Guide: Antarctic Research (2/12/08)
NE Pacific seismic activity: Gorda-Blanco-S.JdF (7/30/07)
Sounds of the Southern Ocean: Antarctica (12/06)
NE Pacific seismic activity: Gorda Ridge (3/7/05)
NE Pacific seismic activity: Endeavour Ridge (2/27/05)
Blue whale sounds (52 Hz):
Blue whales (1/6/05)

Listing of past hot topics available here.

Ocean Seismicity  
Axial eruption epicenters image
  Hydroacoustic monitoring allows the detection and precise location of small submarine earthquakes and volcanic activity.
whale call spectrogram
  Underwater acoustic methods are being used to study the distribution of large whales in the open oceans.  
  Environmental Noise  
  ship noise spectrogram   Studies of the effect of noise, both man-made and natural, on marine life are being planned with NOAA Fisheries researchers.  
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