The Cascadia Subduction Zone runs from Cape Mendocino, Calif., to Vancouver Island, B.C. It is the place where the rocky plate underneath the Pacific Ocean pushes under North America, and the last time it moved (in 1700) it triggered a 9.0 earthquake and a massive tsunami. OCEAN and ESS professor Paul Johnson is one of the scientists measuring the features of this zone in the deep water – up to 1.5 miles deep. Learn more about this study and how it will help us prepare for earthquakes in this Insurance Journal article