NASA | Tohoku Tsunami Creates Antarctic Icebergs

The video discusses the discovery of an ice mass separation in Antarctica, triggered by the Tohoku earthquake and tsunami. Satellite imagery from NASA and the European Space Agency revealed the separation of large icebergs from the Salzburger Ice Shelf. Historical data shows the ice shelf had been stable for over 46 years, suggesting sea ice plays a critical role in its stability.

How long had the area of the ice shelf that separated been intact before the event?

What role does sea ice play in the stability of ice shelves according to the text?