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At present, the eastern shelf, which is about 40 km wide, is moving forward about 600 meters per year. The next change in situation could see the ice’s next jump in velocity to about 2 km per year – the same as the current speed recorded in the 80 km wide western sector.
More tests will be carried out in the new year by Boaty McBoatface, the British autonomous underwater vehicle, which will dive under ice to collect data on water temperature, current trend and turbulence – all factors that influence thawing.
Dr Alex Phillips of the UK’s National Oceanographic Center admitted: “It’s scary. We may not get Poatee back.”
“We put a lot of effort in the last year to develop collision avoidance for the vehicle, to make sure it doesn’t hit the sea floor. We also have emergencies where if it gets into trouble, it can retrace its steps and back out to safety.”
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