SEANGWORLD FACT BRIEF · SEANGWORLDNEWS · 1 SOURCE
NASA satellite images show persistent lava lake and volcanic activity at Mount Michael on Saunders Island
NASA's Landsat 8 and Landsat 9 satellites captured images revealing ongoing volcanic activity at Mount Michael, a stratovolcano on Saunders Island in the South Sandwich Islands. The images show heat from a persistent lava lake in the volcano's summit crater, a volcanic plume, and darkened snow indicating recent activity. Long-term satellite data analyses confirm that Mount Michael hosts one of Earth's few frequently active lava lakes. Thermal data indicate low-intensity volcanic activity over several years, with common emissions of sulfur dioxide and other gases. Atmospheric interactions with the island produced wave clouds visible in later satellite imagery, alongside signs of volcanic gas degassing. These observations rely on satellite data due to the volcano's remote location (sourceId: nasa-news-releases).
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Corroboration
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Facts
- Established fact
Landsat 8 satellite captured an image on August 24, 2026, showing heat from a persistent lava lake in Mount Michael's summit crater.
- Established fact
Mount Michael hosts a frequently active lava lake in its summit crater, confirmed by 30 years of Landsat, Sentinel, and ASTER satellite observations.
- Established fact
Thermal observations from MODIS and VIIRS instruments indicate ongoing low-intensity activity at Mount Michael for several years.
- Established fact
Emissions of sulfur dioxide and other gases are common at Mount Michael, observed by NASA's Aura satellite.
- Established fact
Wave clouds formed over Saunders Island due to atmospheric interactions with Mount Michael, observed in Landsat 9 imagery from September 1, 2026.
Who is affected
Mount Michael volcano, Saunders Island, South Sandwich Islands
Sources
1 SOURCE