Extended Data Fig. 6: Seismicity holes evident today along major subduction zones for seismicity beginning after the megathrust in Fig. 1 struck.

a, Japan Trench, b, Sunda Trench, c, Alaska-Aleutian Trench, d, Peru–Chile Trench. For c–d, we begin when the seismic catalog detection markedly improves in about 1976. All maps are at the same scale.