Tsunami breaks off icebergs

For the first time scientists have observed the power of a tsunami to break off large icebergs in Antarctica.

The tsunami - which was triggered by the earthquake off the coast of Japan earlier in the year - caused large icebergs to break off the Sulzberger Ice Shelf. This is the first direct observation of a connection between tsunamis and icebergs.

“In the past we’ve had calving events where we’ve looked for the source. It’s a reverse scenario - we see a calving and we go looking for a source. We knew right away this was one of the biggest events in recent history - we knew there would be enough swell. And this time we had a source,” NASA scientist Kelly Brunt said.

Read more at NASA