Episode 4 of 4
Tree-Ring Evidence of 1813 Trauma
- When
- 1813
- Where
- 7.5-mile (12 km) section of trees in Alta California
Seventy trees examined along a 7.5-mile section showed trauma beginning in 1813, including two with crown loss, consistent with earthquake damage.
Seventy trees were examined for evidence of the earthquake, and nine of the trees along a 7.5-mile (12 km) section were found to have experienced some form of trauma beginning in 1813, including two with crown loss. Because the trauma begins in 1813 rather than 1812, this evidence is presented by the source as consistent with, but not precisely dated to, the December 1812 shocks.
Sources
- 1812 San Juan Capistrano earthquake Wikipedia, revision of 2026-08-01
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.