
Sign up to save your podcasts
Or


Earlier this month, Mount Rainier experienced its most powerful seismic swarm ever recorded by the U.S. Geological Survey. More than 1,000 earthquakes have been detected at the mountain since July 8 — far above the volcano’s usual activity level — and the swarm is still continuing.
However, despite the levels of seismic activity, the USGS’s Cascades Volcano Observatory say there’s no sign of magma movement or volcanic unrest. Instead, they believe the swarm was triggered by underground fluids shifting through cracks deep below the mountain.
Research geophysicist Alexandra Iezzi joins us to explain what makes Rainier a unique geological phenomenon and what scientists are watching for.
By Oregon Public Broadcasting4.5
281281 ratings
Earlier this month, Mount Rainier experienced its most powerful seismic swarm ever recorded by the U.S. Geological Survey. More than 1,000 earthquakes have been detected at the mountain since July 8 — far above the volcano’s usual activity level — and the swarm is still continuing.
However, despite the levels of seismic activity, the USGS’s Cascades Volcano Observatory say there’s no sign of magma movement or volcanic unrest. Instead, they believe the swarm was triggered by underground fluids shifting through cracks deep below the mountain.
Research geophysicist Alexandra Iezzi joins us to explain what makes Rainier a unique geological phenomenon and what scientists are watching for.

38,575 Listeners

6,794 Listeners

9,243 Listeners

3,996 Listeners

25 Listeners

6,470 Listeners

134 Listeners

225 Listeners

113,179 Listeners

32,378 Listeners

4 Listeners

10,334 Listeners

4,211 Listeners

7,264 Listeners

16,483 Listeners

976 Listeners

16,339 Listeners

218 Listeners

11,014 Listeners

1,609 Listeners

630 Listeners