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By Garland Kennedy
Sitka Sentinel 

Seismic data collection continues at Sitka's Mt. Edgecumbe

 

November 9, 2022



Seven months after an earthquake swarm beneath Mt. Edgecumbe led volcanologists to determine that the Sitka-area volcano is active, data collection and research are continuing.

Since August 2018, magma has risen beneath the formerly dormant volcano and caused almost 3 inches of deformation annually, University of Alaska Fairbanks associate professor of geodesy Ronni Grapenthin said.

An eruption is not imminent, he added.

Since April’s quakes, seismic activity on the mountain has subsided, he noted, but the mountain is deforming more quickly than any other Alaska volcano. Mt. Edgecumbe, or...



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