Waves broke Wilkins ice shelf

The Economist : In 2008 part of the Wilkins ice shelf on the edge of the Antarctic peninsula suddenly disintegrated.The Wilkins shelf may or may not have been the victim, ultimately, of climate change. Regardless of what weakened it, though, it was not rising temperatures that caused the sudden breakup. Peter Bromirski of the Scripps Institution of Oceanography in San Diego thinks he knows what did: a little-studied phenomenon called infragravity waves .