The Rooster
"Okeydoke"
By Ally Osborne
If you’ve been around Central Oregon for a while(click here), you’ll probably recall the magma bulge found near South Sister in the 1990s.
Now, the United States Geological Survey discovered another 12-mile bulge in the same area after reviewing data from June 2020 until August 2021.
“Data from satellite radar images show an uplift of about 0.9 inches or 2.2 cm (about the width of an adult’s thumb) occurred between the summer of 2020 and August 2021 across an area 12-mile (20-km) in diameter,” according to the Cascades Volcano Observatory.
The volcano is still in the green zone, meaning an eruption is very unlikely, but the event is still leaving scientists fascinated.
“And why is it so exciting?” I asked Hal Wershow, an Assistant Professor of Geology at Central Oregon Community College.
“Oh man,” said Wershow, after bursting into laughter.
He said he didn’t know where to start.
“The Earth is inflating upwards,” Wershow said, “It’s a very small amount, we’re talking an order of inches. There’s no way a human being would be able to detect it.”
The lift suggests that magma around 4 miles deep is shifting, causing the ground to rise and fall over the years....
February 2, 2022
By Joelle Jones
Portland, Oregon - The Pacific Northwest (click here) is well known for its stunning summits and plentiful peaks, but are the mountains moving?
In a USGS Hazard Notification statement Monday, Cascades Volcano Observatory announced their scientists have tracked an increased rate of ground uplift in the Three Sisters volcanic region.
Using satellite radar images and GPS units, USGS scientists have tracked an increased rate of uplift for a 12-mile diameter region, 3 miles west of the South Sister volcano. According to USGS, the data suggests the ground rose 0.9 inches (2.2 cm) from June 2020 to August 2021....
In a USGS Hazard Notification statement Monday, Cascades Volcano Observatory announced their scientists have tracked an increased rate of ground uplift in the Three Sisters volcanic region.
Using satellite radar images and GPS units, USGS scientists have tracked an increased rate of uplift for a 12-mile diameter region, 3 miles west of the South Sister volcano. According to USGS, the data suggests the ground rose 0.9 inches (2.2 cm) from June 2020 to August 2021....
By Cascades Valcano Observatory
Additionally, seismologists observed brief bursts of small earthquakes in October 2021, December 2021, and January 2022. Most of these shallow earthquakes are too small to locate precisely; those located are inside the uplifted area....
