The Cahuilla earthquake swarm produced earthquakes from early 2016 through 2019 and caused no significant damage despite lasting four years.
Notes on verification
Multiple independent sources (Caltech, ScienceDaily, Science News, Smithsonian, Wikipedia) corroborate the timeline, magnitude range, and absence of significant damage. [cascade flags: aggregator_dropped_primary_exists,wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.833 clusters=3 claim_tier=notable] [llm_rejected_corroborator url=https://www.caltech.edu/about/news/natural-fluid-injections-triggered-cahuilla-earthquake-swarm] rejected by auto_resolver_v1_8 run=13071dc8: The page states the swarm occurred between 2016 and 2019 and lasted about four years, but it does not state that it began in early 2016 or caused no significant damage.
Sources
- A strange earthquake swarm lasted for years. Scientists finally know ... (seed:environment_and_wildlife)
- https://www.sciencenews.org/article/machine-learning-california-earthquake-swarm (corroboration)
- https://www.caltech.edu/about/news/natural-fluid-injections-triggered-cahuilla-earthquake-swarm (corroboration)
- https://www.smithsonianmag.com/smart-news/earthquake-swarm-reveals-complex-structure-california-fault-line-180975161/ (corroboration)