Stress Rotation Across the Cascadia Megathrust Requires a Weak Subduction Plate Boundary at Seismogenic Depths

Duo Li, GNS Science, Montreal, New Zealand, Jeffrey Joseph McGuire, WHOI, Woods Hole, MA, United States, YaJing Liu, McGill University, Earth and Planetary Sciences, Montreal, QC, Canada and Jeanne Hardebeck, U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States