NEWPORT, Ore. - For the first time, we're getting to listen to the eruption of an undersea volcano off the Northwest coast. Correspondent Tom Banse got a hold of unusual recordings made at a place called Axial Seamount. It's about 300 miles out to sea from Cannon Beach, Oregon.
Researchers from Oregon State University deployed instruments on the seafloor in anticipation of an eruption at Axial Seamount last year. At first, an underwater microphone - called a hydrophone - captured the low-frequency rumblings of small earthquakes. The sped up audio sounds like a loud bump.