Fox said the earthquake activity, which reached a peak of nearly 90 per hour Tuesday evening, had slowed to only a few per hour by Thursday afternoon. Shortly after the research system was installed in 1993, the Newport scientists were the first to witness a seafloor eruption as it was happening. The first event they detected was at Coaxial Volcano, about 270 miles west of Astoria on the Juan de Fuca Ridge. They also monitored the 1996 Northern Gorda eruption, and then the January 1998 eruption on the massive Axial Volcano, about 275 miles west of Cannon Beach. The Axial eruption was the largest, producing about 10,000 small earthquakes.
Instruments are in place on Axial Volcano to monitor future eruptions on the huge peak.
We learn something new each time.