Planetary wave supercharging noctilucent clouds over Antarctica

Planetary wave supercharging noctilucent clouds over Antarctica

An atmospheric wave about half as wide as the Earth is supercharging noctilucent clouds (NLCs) in the southern hemisphere, with NASA's Aeronomy of Ice in the Mesosphere (AIM) spacecraft detecting the phenomenon in this series of south polar images from November…

Shallow M6.0 earthquake hits 265 km NE of Scott Island Bank, Antarctica

Shallow M6.0 earthquake hits 265 km NE of Scott Island Bank, Antarctica

A strong and shallow earthquake registered by the USGS as M6.0 hit 265 km (164 miles) NE of Scott Island Bank, Antarctica at 11:37 UTC on February 2, 2018. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth….

Mantle plume, a geothermal heat source under West Antarctic ice sheet

Mantle plume, a geothermal heat source under West Antarctic ice sheet

A new study adds to evidence that a geothermal heat source called a mantle plume lies deep below Antarctica's Marie Byrd Land, explaining some of the melting that forms lakes and rivers under the ice sheet. Although the heat source isn't a new or increasing…

Scientists uncover largest volcanic region on Earth under West Antarctica

Scientists uncover largest volcanic region on Earth under West Antarctica

A remote survey suggested by third-year university student discovered 91 volcanoes in a massive region known as the West Antarctic Rift System. The volcanoes range in height from 100 m to 3 850 m (328 to 12 631 feet). A study conceived by a third-year student at the…

Huge Antarctic iceberg finally breaks free

Huge Antarctic iceberg finally breaks free

After months of ‘hanging by a thread’, a vast iceberg the size of Norfolk has finally broken off Antarctica’s Larsen C Ice Shelf. Around 30 m (98 feet) of this 190 m (623 feet) thick block of ice sits above the sea surface. Scientists now have…

Antarctic sea ice growth explained by natural variability

Antarctic sea ice growth explained by natural variability

A newly published study offers evidence that the negative phase of the Interdecadal Pacific Oscillation (IPO), which is characterized by cooler-than-average sea surface temperatures in the tropical eastern Pacific, has created favorable conditions for additional…