BAR HARBOR (AP) – An earthquake earlier this month was stronger than originally believed, according to an analysis by the Weston Observatory, officials said Monday.
The Oct. 2 quake had a magnitude of 4.2, compared to the preliminary magnitude of 3.9, and it followed a series of quakes that began with a magnitude of 3.4 on Sept. 22, according to the New England Seismic Network, which is managed by Weston Observatory.
The earthquake caused boulders to tumble onto Acadia National Park’s Park Loop Road, but no injuries were reported. Acadia National Park road crews had to use loaders and dump trucks to remove the rock debris.
The activity seems to have died down, with no aftershocks reported since Oct. 10, said the Weston Observatory’s director, John Ebel.
The quakes generated interest outside of Maine.
Scientists from the Lamont-Doherty Earth Observatory, part of Columbia University, installed four temporary earthquake-monitoring stations around Bar Harbor to detect aftershocks.
Units installed near Otter Creek, Long Lake, Schoodic Point and Lamoine will remain in place for about 4 weeks, said State Geologist Robert Marvinney.
“This effort will help us better understand these earthquakes, but it will not help us predict when and where the next quake will occur,” he said.
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