Researchers identified 22,698 earthquakes in the Cahuilla swarm in Southern California, which lasted nearly four years.
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.caltech.edu/about/news/natural-fluid-injections-triggered-cahuilla-earthquake-swarm (caltech.edu)
- https://strangesounds.org/2020/07/cahuilla-earthquake-swarm-south-california-mystery.html (strangesounds.org)
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