A new NASA study finds that during Greenland’s hottest summers on record, 2010 and 2012, the ice in Rink Glacier on the island’s west coast didn’t just melt faster than usual, it slid through the glacier’s interior in a gigantic wave, like a warmed freezer pop sliding out of its plastic casing. https://www.jpl.nasa.gov/news/news.php?feature=6857
“You could literally be standing there and you would not see any indication of the wave,” said JPL scientist Eric Larour, a coauthor of the new paper. “You would not see cracks or other unique surface features.”
Rink Glacier https://en.wikipedia.org/wiki/Rink_Glacier
Solitary Wave https://en.wikipedia.org/wiki/Solitary_wave