Science
Record spike in earthquakes at Washington's 'high threat' volcano sends researchers scrambling for answers
Scientists have recorded a significant uptick in earthquakes at the Mount Adams volcano — the largest active volcano in Washington state.
Six earthquakes hit the "high threat" volcano in September, according to the United States Geological Survey (USGS), which is a drastic increase from the normal rate of one earthquake at the volcano every two to three years.
This is the largest number of earthquakes recorded at Mount Adams in a single month since records began in 1982. The earthquakes ranged from magnitudes 0.9 to 2 and were recorded via a single seismic station 7 miles (11 kilometers) southwest of Mount Adams' summit. None of the ground shakes were felt at the surface.
According to experts, these earthquakes do not mean an eruption is imminent. "Currently, there is no indication that the level of earthquake activity is cause for concern," USGS representatives wrote in a statement.
Efforts are underway to better understand what's happening beneath the volcano. Scientists with the Cascades Volcano Observatory (CVO) and Pacific Northwest Seismic Network (PNSN) will install a set of temporary seismic stations in the area to get a better understanding of the size, location and depth of the seismic activity, according to the statement.
Mount Adams towers more than 12,000 feet (3,660 meters) above Earth's surface and stretches 18 miles (29 km) across, making it one of the largest peaks in the Cascades mountain range. It sits around 70 miles (110 km) northwest of Portland.
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