Health Editor’s Note: Volcanoes are so interesting. Amazing, for the most part, is how we manage to live with them. We are even able to visit them as a tourist attraction in Hawaii and Iceland. Any where else? ….Carol
Rare Lava Lake Found on Top of Sub-Antarctic Volcano
By Jason Daley Smithsonian.com
Hollywood would have you believe that at the peak of most volcanoes is a roiling, red-hot lake of lava, perfect for human sacrifices or killing James Bond. Persistent lava lakes are actually quite rare; of Earth’s roughly 1,500 volcanoes, only seven are known to have lava lakes. So, the discovery of an eighth lava-topped volcano in the sub-Antarctic Sandwich Islands is a big deal, according to a new study in the Journal of Volcanology and Geothermal Research.
The new lava lake is found on the summit of Mount Michael on Saunders Island, which is part of the British Overseas Territory of South Georgia and the South Sandwich Islands. According to a press release from the British Antarctic Survey, the hot spot was originally hinted at in 2001 when low-resolution satellite data showed a geothermal anomaly at the top of the peak.
Geologists used higher resolution satellite images of the mountain taken between 2003 and 2018 and cross-referenced that information with additional datasets going back 30 years. Using advanced image processing techniques, they were able to determine that a lake of fire roughly 300 to 700 feet wide was present throughout the time period.