Hundreds of small earthquakes have been reported near a volcano in Southeast Alaska believed to have been dormant for at least 800 years.
The cause of the quakes under Mount Edgecumbe, a volcano near Sitka that resembles Mount Fuji in Japan, are not known. However, they may not be an indication of volcanic activity, said Dave Schneider, a research geophysicist with the U.S. Geological Survey at the Alaska Volcano Observatory in Anchorage.
“These aren’t necessarily related to volcanic activity, they could be a tectonic in nature or a combination of tectonics and the volcano,” he said. “We really can’t tell the difference at this point.”“Volcanoes do have swarms of earthquakes that do not lead to eruption,” he said. The volcano observatory did a retrospective analysis of earthquake data near Mount Edgecumbe, which showed a small number of earthquakes started occurring in 2020.
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