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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Spatiotemporal evolution of tremor activity near the Nankai Trough trench axis inferred from the spatial distribution of seismic amplitudes

Fig. 5

a Temporal variation of source radiation amplitude (circles) compared to the cumulative number of tremor events (solid curve). b \(\Delta\)CFF at the plate boundary in our study area due to Earth’s tides. c Hourly number of tremor events (bars) and \(\Delta\)CFF (dashed curve) during 27–30 December 2020. Red dashed lines denote the origin time of teleseismic earthquakes, for which the approximate location, depth, and magnitude estimated by the GCMT project (Ekström et al. 2012) are reported

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