Long term megathrust earthquake aftershock patterns

By | Published November 3, 2022 | Full size is 1200 × 780 pixels

Graph of aftershock rate against time relative to background levels for 300 years after a large megathrust earthquake. Schematic in top right shows relative distribution of core (blue) and corona (red) zones, which are plotted separately. In the core, the blue line shows a period of activity below background starting within a few years and persisting for several centuries; in the corona the red line shows a decline to background within a few decades.

Model of aftershock rate against time relative to background levels for 300 years after a large megathrust earthquake. Schematic in top right shows relative distribution of core (blue) and corona (red) zones, which are plotted separately. From Stein & Toda (2022).

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