Although the width of the tremor region at the Nankai Trough is relatively narrow compared to the Cascadia subduction zone in northern Washington, hence the variation is not as apparent as in Cascadia nevertheless, a decreasing trend in the slip periodicity with down-dip distance appears in both well-monitored subduction zones (inset in Figs. 2 b and 4 b).
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Role of plate convergence rate in shaping earthquake recurrence in subduction zones.
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