Episode 3 of 3
Ice Core Analysis
- When
- 1809
- Where
- Antarctic and Greenland
A 1991 study of Antarctic and Greenland ice cores found a sulfate spike in early 1809, roughly half that of the 1815 eruption of Mount Tambora.
This study provided initial evidence for a significant volcanic event. However, subsequent research using bristlecone pine tree ring data pointed to the eruption occurring in 1808 rather than early 1809, suggesting a complex time-evolving pattern of multiple eruptions.
Sources
- 1808 mystery eruption Wikipedia, revision of 2026-04-10
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.