SEANGWORLD FACT BRIEF · SEANGWORLDNEWS · 1 SOURCE
NASA satellite captures heat from persistent lava lake at Mount Michael volcano in South Sandwich Islands
On August 24, 2026, the NASA-USGS Landsat 8 satellite acquired a natural-color image overlaid with infrared data showing a heat signal from a persistent lava lake in the summit crater of Mount Michael, a stratovolcano on Saunders Island in the South Sandwich Islands. Additional observations indicated ongoing volcanic activity including a volcanic plume and darkened snow on the northern slopes. Long-term satellite data confirm that Mount Michael has maintained low-intensity eruptions and emissions of sulfur dioxide in recent years, with the volcano monitored remotely due to its remote location in the South Atlantic Ocean near the Antarctic Circle.
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Corroboration
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Facts
- Established fact
Mount Michael volcano on Saunders Island hosts a frequently active lava lake in its summit crater detected by Landsat 8 satellite on August 24, 2026.
- Established fact
An infrared signal overlaid on the natural-color image revealed heat from the persistent lava lake in Mount Michael's summit crater.
- Established fact
A volcanic plume was observed hovering over Mount Michael’s peak along with darkened snow on its northern slopes, suggesting ongoing volcanic activity.
- Established fact
Mount Michael is part of the South Sandwich Islands volcanic arc, formed from the subduction of the South American plate beneath the South Sandwich plate.
- Established factresearchers referenced in NASA report
Satellite thermal anomaly data over 30 years from Landsat, Sentinel, and ASTER confirm Mount Michael hosts a persistent lava lake in its summit crater.
- Established fact
Low-intensity volcanic activity has been ongoing at Mount Michael for several years, supported by MODIS, VIIRS, and MIROVA thermal observations.
- Established fact
NASA Aura satellite detects emissions of sulfur dioxide and other volcanic gases commonly occurring at Mount Michael.
- Established fact
On September 1, 2026, Landsat 9 observed wave clouds caused by wind interaction with Saunders Island’s Mount Michael peak, along with volcanic gas degassing trails.
Sources
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