Aurora Subglacial Basin is a large subglacial basin of

Wilkes Land Wilkes Land is a large district of land in eastern Antarctica, formally claimed by Australia as part of the Australian Antarctic Territory, though this claim has been held in abeyance for the period of the operation of the Antarctic Treaty, to wh ...

to the west of Dome Charlie and trending northwest toward the coast in the vicinity of

Shackleton Ice Shelf Shackleton Ice Shelf is an extensive ice shelf fronting the coast of East Antarctica from 95° E to 105° E. It extends for an along-shore distance of about , projecting seaward about in the western portion and in the east. It occ ...

. The basin was delineated by the SPRI-

NSF NSF may stand for: Political organizations *National Socialist Front, a Swedish National Socialist party *NS-Frauenschaft, the women's wing of the former German Nazi party * National Students Federation, a leftist Pakistani students' political g ...

- TUD airborne radio echo sounding program, 1967–79, and named after ''Aurora'', the ship of the

Australasian Antarctic Expedition The Australasian Antarctic Expedition was a 1911–1914 expedition headed by Douglas Mawson that explored the largely uncharted Antarctic coast due south of Australia. Mawson had been inspired to lead his own venture by his experiences on Ernest ...

, 1911–14, led by

Douglas Mawson Sir Douglas Mawson (5 May 1882 – 14 October 1958) was a British-born Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during ...

. The Aurora Subglacial Basin is largely grounded below sea level, making it susceptible to

marine ice sheet instability In glaciology, an ice sheet, also known as a continental glacier, is a mass of glacial ice that covers surrounding terrain and is greater than . The only current ice sheets are the Antarctic ice sheet and the Greenland ice sheet. Ice sheets are ...

. The Aurora Subglacial Basin is drained in part by Totten Glacier, which responds readily to melt induced by

upwelling Upwelling is an physical oceanography, oceanographic phenomenon that involves wind-driven motion of dense, cooler, and usually nutrient-rich water from deep water towards the ocean surface. It replaces the warmer and usually nutrient-depleted sur ...

of warm circumpolar deep water and could raise global sea level by more than 3.5 m. In 2011 ice-penetrating radar led to the creation of the first high-resolution topographic map of the Basin, one of the last uncharted regions of Earth. The map reveals some of the largest fjords or ice cut channels on Earth, down to more than two kilometres below sea level.

References

* Structural basins of Antarctica Landforms of Wilkes Land {{WilkesLand-geo-stub