SEANGWORLD FACT BRIEF · SEANGWORLDNEWS · 1 SOURCE
NASA satellite imagery shows persistent lava lake activity at Mount Michael volcano on Saunders Island
On August 24, 2026, the NASA-USGS Landsat 8 satellite captured images of Mount Michael, a stratovolcano on Saunders Island in the South Sandwich Islands, revealing a persistent lava lake in its summit crater. Infrared data indicated heat from the lava lake and a volcanic plume, suggesting ongoing low-intensity volcanic activity. Analysis of 30 years of satellite thermal observations confirms that Mount Michael maintains a frequently active lava lake, a feature rare among volcanoes globally. Additional satellite instruments have detected sulfur dioxide emissions from the volcano. A week later, Landsat 9 imagery showed atmospheric wave clouds formed by the island's interaction with wind patterns. Due to the remoteness of the area, continuous monitoring relies heavily on satellite data.
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Corroboration
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Facts
- Established fact
Mount Michael on Saunders Island hosts a persistent lava lake in its summit crater as observed by Landsat 8 on August 24, 2026.
- Established fact
Infrared imagery detected heat signatures and a volcanic plume at Mount Michael indicating ongoing volcanic activity.
- Established fact
Mount Michael is part of the South Sandwich Islands formed by the subduction of the South American plate beneath the South Sandwich plate.
- Established fact
Thermal observations over 30 years from Landsat, Sentinel, and ASTER satellites confirm a persistent lava lake at Mount Michael.
- Established fact
Sulfur dioxide and other volcanic gas emissions from Mount Michael have been detected by NASA's Aura satellite instruments.
- Established fact
Wave clouds caused by the interaction of passing winds with Saunders Island were observed in imagery from Landsat 9 on September 1, 2026.
Sources
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