SEANGWORLD FACT BRIEF · SEANGWORLDNEWS · 1 SOURCE
NASA Satellites Observe Persistent Lava Lake Activity at Mount Michael on Saunders Island
NASA Earth Observatory images from Landsat 8 and 9 satellites confirm ongoing volcanic activity at Mount Michael, a stratovolcano on Saunders Island in the South Atlantic. Satellite data indicate a persistent lava lake in the volcano's summit crater, with thermal anomalies detected over 30 years through multiple sensors including Landsat, Sentinel, ASTER, MODIS, and VIIRS. Volcanic gases such as sulfur dioxide are commonly emitted from the volcano. Saunders Island is part of the South Sandwich Islands, formed by the subduction of the South American plate beneath the South Sandwich plate. These remote volcanic activities are monitored primarily via satellite data due to the region's inaccessibility.
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Corroboration
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Facts
- Established fact
Mount Michael hosts a frequently active lava lake in its summit crater as observed by NASA's Landsat 8 Operational Land Imager on August 24, 2026.
- Established fact
Thermal anomaly analysis from Landsat, Sentinel, and ASTER observations spanning 30 years shows Mount Michael has a persistent lava lake.
- Established fact
Low-intensity volcanic activity has been ongoing at Mount Michael for several years according to MIROVA volcanic hot spot detection and MODIS and VIIRS instruments.
- Established fact
NASA's Aura satellite detects emissions of sulfur dioxide and other gases commonly at Mount Michael.
- Established fact
Saunders Island is part of the South Sandwich Islands, formed by the South American plate subducting beneath the South Sandwich plate.
Who is affected
Mount Michael summit crater, Saunders Island, South Sandwich Islands, South Atlantic Ocean
Sources
1 SOURCE