The floating portion of Totten Glacier in East Antarctica may be melting from warm sea water swirling beneath it, making it more vulnerable than previously thought to future melting. That’s according to a new study by scientists at the Imperial College London and institutions in Australia, the US, and New Zealand, and published yesterday in Nature. The study’s team found that a part of the Totten Glacier that floats on warm sea water is losing some ice, even while total ice cover in Antarctica continues to expand.
The East Antarctic Ice Sheet (EAIS) is relatively stable compared to West Antarctica, which sits on an enormous fault zone. However, the region of the Totten Glacier studied sits on ocean water heated from geothermal activity, which explains the possibility that it could progressively melt.