West Coast fault systems may trigger synchronized earthquakes

New geological research suggests that the Cascadia Subduction Zone and the San Andreas fault may be more interconnected than previously understood. A study led by marine geologist Chris Goldfinger of Oregon State University indicates that these two major West Coast fault systems can become synchronized. By analyzing deep-sea sediment cores covering 3,100 years of history, researchers identified patterns suggesting that major earthquakes on both faults have occasionally occurred within minutes or hours of each other, including three such events in the last 1,500 years.

In response to the ongoing seismic risks in the region, the Great Oregon ShakeOut earthquake drill is scheduled for October 15. The drill encourages residents and institutions, such as the University of Oregon, to practice the ‘drop, cover, and hold on’ technique. Authorities recommend signing up for regional alerts and utilizing tools like the ShakeAlert-powered MyShake app to receive early warnings for potential seismic activity.