Massive cavity opening in Antarctic glacier is ‘disturbing’ sign of climate change, says Nasa
Discoveries at Thwaites glacier reveal ice melting at surprisingly fast rate, scientists say
1 February, 2019
An enormous cavity has opened up beneath a remote glacier in Antarctica, spelling bad news for future sea levels.
Cavities underneath glaciers can exacerbate ice loss as they allow relatively warm seawater to lap against the underside, driving further melting.
Owing to the difficulty in accessing and monitoring glaciers, Nasa uses ice-penetrating radar from planes flying over the region to build up a picture of what is going on below.