"Unprecedented Volcanic Activity: Dormant Supervolcano Awakens After Millennia"
Researchers from Caltech have created detailed underground images of the Long Valley Caldera, a region in California sitting atop a dormant supervolcano. The images reveal that recent seismic activity is a result of cooling and settling, rather than preparation for another supervolcanic eruption. The magma chamber is covered by a hardened lid of crystallized rock. The researchers used fiber optic cables and distributed acoustic sensing (DAS) to measure seismic events and develop the images. This study provides valuable insights into crustal dynamics and the subsurface environment of other regions.