Axial Seamount
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Basic Information
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Location: 45.55° N, 130° W
Type of Volcano: Seamount
Height: 500 feet above sea floor
Axial Seamount is an underwater
volcano in the Juan de Fuca ridge. It is 300 miles west of Cannon Beach,
Oregon. Axial Seamount is a very active seamount. In it's past eruptions
it has created a long rectangular caldera at it's summit.
The Juan de Fuca plate is
a smaller plate located in the area of the United States' Pacific
Northwest. The plate is colliding with the North American plate, but pulling
away from the Pacific plate. At this spreading center, or ridge, some 300
miles off the coast of Washington State and Oregon, there are several volcanoes.
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Eruption - January 25-28, 1998
There was intense seismic activity at this seamount
starting on January 25, through January 28. The seismic activity had many
several smaller with one main shock. The activity on the 25 and 28 makes
some volcanologists believe that an eruption would likely occur there soon.
A relatively large earthquake of 4.9 on the Richter scale was recorded
on the 28, and volcanologist are realizing that the earthquakes epicenters
are gradually moving south.
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