The Cahuilla earthquake swarm began in 2016 but went unnoticed until 2017, when a citizen emailed the Southern California Seismic Network about a cluster of tiny earthquakes.
Sources
- A strange earthquake swarm lasted for years. Scientists finally know ... (nationalgeographic.com)
- https://www.sciencenews.org/article/machine-learning-california-earthquake-swarm (sciencenews.org)
- https://www.smithsonianmag.com/smart-news/earthquake-swarm-reveals-complex-structure-california-fault-line-180975161/ (smithsonianmag.com)
- https://www.nationalacademies.org/news/how-science-is-using-ai-to-translate-the-nonstop-chatter-of-the-earth (nationalacademies.org)
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