Overview

• Researchers have mapped over 550 miles of the Cascadia Subduction Zone, revealing four distinct segments.
• The data indicates that the fault's complexity could lead to independent or simultaneous ruptures, affecting earthquake magnitude and impact.
• The segment off Washington state and Vancouver Island is identified as the most dangerous due to its smoothness and shallow angle.
• Experts warn that the Pacific Northwest remains underprepared for a potential magnitude 9 earthquake and resulting tsunamis.
• The new findings will help improve earthquake and tsunami models, informing building codes and emergency planning.