SEANGWORLD FACT BRIEF · SEANGWORLDNEWS · 1 SOURCE
Satellite images show active lava lake and volcanic activity at Mount Michael on Saunders Island
On August 24, 2026, satellite imagery from Landsat 8's Operational Land Imager captured a bright infrared signal indicating heat from a persistent lava lake in the summit crater of Mount Michael, a stratovolcano on Saunders Island. A volcanic plume and darkened snow observed in the image suggest ongoing volcanic activity. Mount Michael, part of the South Sandwich Islands volcanic arc formed by tectonic plate subduction, has exhibited frequent eruptions and continuous low-intensity activity over several years, as confirmed by thermal satellite data from various missions. Wave clouds formed downwind of the island were also detected in a September 1, 2026 image from Landsat 9.
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Corroboration
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Facts
- Established fact
Mount Michael, a stratovolcano on Saunders Island, hosts a frequently active lava lake in its summit crater as observed on August 24, 2026 by Landsat 8 OLI satellite imagery.
- Established fact
A volcanic plume and darkened snow on the northern slopes indicate ongoing volcanic activity at Mount Michael.
- Established fact
Saunders Island is part of the South Sandwich Islands volcanic chain formed by subduction of the South American plate beneath the South Sandwich plate.
- Established fact
Thermal satellite observations from Landsat, Sentinel, ASTER, MODIS, and VIIRS indicate Mount Michael has sustained low-intensity volcanic activity and a persistent lava lake over the past several years.
- Established fact
Wave clouds formed downwind of Saunders Island were observed in Landsat 9 imagery on September 1, 2026, due to airflow disturbance by the volcano's peak.
What changed
Clear satellite images revealed ongoing volcanic activity and a persistent lava lake at Mount Michael's summit crater.
Who is affected
Mount Michael volcano and surrounding area on Saunders Island, South Sandwich Islands.
What happens next
Continued satellite monitoring to observe Mount Michael's volcanic activity and associated atmospheric phenomena.
Sources
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