How to Hear an Underwater Earthquake

English: An aerial view of Minato, Japan, a we...

An aerial view of Minato, Japan, a week after a 9.0 magnitude earthquake and subsequent tsunami devastated the area. (Photo credit: Wikipedia)

For a story in progress (now available!), I was doing some research on infrasound and sea animals and hydrophonics, and I happened across this amazing and terrifying recording.

The March 11, 2011 Tōhoku earthquake off Japan, which produced a devastating tsunami killing perhaps 16,000 people, was recorded by a hydrophonic array in the Aleutian Islands, more than 900 miles away. Despite the great distance, the recorded seismic disturbance is the loudest they’ve ever captured, even louder than the nearby underwater volcanoes.

Listen all the way through to the end, when the sound simply buries the microphone. It’s terrifying. Continue reading