Antarctic Peninsula in 'dramatic' ice loss:
By Christina Garcés
The ice streams were stable up until 2009, since when they have been losing of 56 billion tonnes of ice a year to the ocean.
Warm waters from the deep sea may be driving the changes, the UK-based team says.
They include more than 10 years of space observations of a broad swathe of coastline roughly 750km in length, on the south-western sector of the peninsula.
Here there is a multitude of glaciers slipping down mountainous terrain and terminating in the Bellingshausen Sea.
"In 2009/2010, the surface in this part of the southern Antarctic Peninsula started to lower at a really quite dramatic rate, of 4m per year in some places. That's a pretty big signal," said Bristol's Prof Jonathan Bamber.