‘Largest volcanic region’ found – under Antarctica

SCIENTISTS believe they have found the largest volcanic region on earth – under the ice of Antarctica.

A remote survey discovered 91 volcanoes, ranging in height from 100m to 3,850m, in a massive region known as the West Antarctic Rift System.

Geologists and ice experts say the range has similarities to east Africa’s volcanic ridge.

Researchers from the University of Edinburgh remotely surveyed the underside of the ice sheet for hidden peaks of basalt rock, like those of other volcanoes in the region whose tips push above the ice.

They analysed the shape of the land beneath, using measurements from ice-penetrating radar, and compared the findings with satellite, database records, and geological information from aerial surveys.

The study, the first of its kind, was proposed by Max Van Wyk de Vries, a third-year University of Edinburgh student.

Scientists hope it will help them understand how volcanoes can influence long-term fluctuations in the ice sheet and how the continent has changed in past climates.

Mr Van Wyk de Vries, said: “Antarctica is among the least studied areas of the globe, and as a young scientist I was excited to learn about something not well understood.”

The results do not indicate whether the volcanoes are active, but should inform ongoing research into seismic monitoring in the area.

Studies have suggested that volcanic activity may have occurred in the region during warmer periods and could increase if Antarctica’s ice thins in a warming climate.

The study has been published in the Geological Society Special Publications series.