This past US summer, southern California experienced a significant earthquake swarm. Analysis of the event suggests earthquakes unravel in a more complicated manner than is typically appreciated. What’s more, this event has perturbed a major, previously idle fault nearby—and scientists aren’t entirely sure about the potential consequences.
A magnitude 7.1 earthquake struck southern California on Saturday at around 1:19 pm, with a reported epicentre around 16km to the northeast of the town of Ridgecrest—the second major quake to hit the region in two days.
On November 11, 2018, a deep rumble ricocheted around the world, one that humans couldn’t feel but that registered quite clearly on seismometers. A new pre-print paper about the event is now suggesting that it was caused by the largest offshore volcanic event in recorded history.