Under Ice Robot Detects Warm Water Intrusions Beneath Antarctica’s Thwaites Glacier
A torpedo-shaped underwater robot that spent eight months drifting beneath Antarctica’s vast Thwaites Glacier has detected concentrated flows of warm ocean water eroding the glacier from below a development scientists have long warned could accelerate global sea-level rise.
The autonomous submersible, known as Icefin, was deployed through a narrow borehole drilled deep into the ice in West Antarctica. Operating without GPS beneath hundreds of metres of ice, it mapped water temperatures, salinity and melt rates in areas previously unreachable by humans or satellites.
After 240 days under the glacier, data transmitted back to researchers revealed pulses of unusually warm, salty water pushing inland beneath the ice shelf. Rather than melting uniformly, the water appe...









