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Researchers Monitor Potential Eruption of Oregon’s Underwater Volcano

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An underwater volcano approximately 300 miles off the coast of Oregon, known as the Axial Seamount, is under close observation by volcanologists who suggest it could erupt by the end of the year. However, they emphasize that the situation does not appear to be imminent. Situated about 4,900 feet beneath the Pacific Ocean surface along the Juan de Fuca Ridge, Axial Seamount is the most active submarine volcano in the northeast Pacific.

In the past three decades, three significant eruptions have occurred at Axial Seamount—in 1998, 2011, and 2015. Researchers Bill Chadwick from Oregon State University and Scott Nooner from the University of North Carolina at Wilmington have been closely monitoring its activity. “Our forecast of an eruption at Axial Seamount by the end of the year still stands, but I have to say nothing looks imminent,” Chadwick stated during a recent interview.

Volcanic Activity and Threat Assessment

The U.S. Geological Survey (USGS) indicates that the depth of Axial Seamount, combined with its relatively gentle lava flow style, mitigates any serious threats to human life, maritime activities, or property. “For the size of eruptions we’ve seen in the last 20 years, if you were on top of it on a boat, you would never know it,” Chadwick explained.

Despite the lack of immediate danger, researchers are keen to understand how underwater eruptions occur, as this knowledge could improve forecasting models for terrestrial volcanoes.

The potential for an eruption this year is linked to an increase in inflation at the volcano, suggesting that magma is accumulating below the seafloor. According to Chadwick, inflation levels reached those observed prior to the 2015 eruption as early as January 2023. Nevertheless, he noted that the rate of inflation has been gradually decreasing since then.

Seismic Monitoring and Future Predictions

In addition to monitoring inflation, researchers track seismic activity around Axial Seamount using instruments and cables extending from the U.S. coastline. In June 2023 alone, over 2,000 earthquakes were recorded near the volcano within a single day, indicating heightened geological activity that could precede an eruption.

Furthermore, a tsunami wave triggered by an 8.8 magnitude earthquake near Russia’s Kamchatka Peninsula activated automated alerts designed to signal potential eruptions. Chadwick clarified that while this event generated alerts, it was not indicative of an actual volcanic eruption.

“We can only wait and see,” Chadwick remarked, “but nothing seems imminent at the moment since the rate of unrest keeps wavering.” He acknowledged the uncertainty surrounding the exact conditions required for the next eruption, but emphasized the hope that ongoing monitoring will shed light on this complex process.

As the situation develops, researchers remain vigilant and committed to understanding the behavior of this underwater volcano, which not only poses minimal risk but also holds significant scientific potential.

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