Geologic Background:
Historic Activity:
Recent Activity:
- Beginning at 0700 GMT on February 28, 1996, intense
seismicity was detected using the T-phase Monitoring
System developed by NOAA. The event was located on the
northernmost segment of the Gorda Ridge, over 200 km west
of the Oregon coast. Camera tows and temperature surveys
in April confermed an eruption. The eruption site was at
least 3.5 km long and 100 to 200 m wide.
- Seismic swarm on January 8, 1998.
Data Sources:
- Information from Global Volcanism Network (V. 21, No.
2 to V. 23, No. 1)
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