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  Gorda Eruption, 1996  
  tremor spectrogramBeginning at 0700 GMT on 28 February 1996, intense seismicity was detected in the northeast Pacific Ocean using the T-phase Monitoring System developed by NOAA/PMEL to access the U.S. Navy's SOund SUrveillance System (SOSUS) in the northeast Pacific. The current event is located on the northernmost segment of the Gorda Ridge near 42 40'N and 126 48'W. The nature of the seismicity is very similar to that observed in June 1993 at the CoAxial Segment of the Juan de Fuca Ridge, which was later documented to be a lateral magma injection with subsequent eruption.

Visit the Gorda eruption site for more information.

Click on spectrogram for full-sized image.

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