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Earth, Planets and Space
Fig. 3. | Earth, Planets and Space

Fig. 3.

From: A long-term seismic quiescence started 23 years before the 2011 off the Pacific coast of Tohoku Earthquake (M = 9.0)

Fig. 3.

Time slices of Z-value distribution using the JMA non-declustered catalog. A time window starts at Ts and ends at Ts + Tw, here Tw = 15 years. A red color (positive Z-value) represents a decrease in the seismicity rate. Circles labeled by M and B indicate Miyagi and Boso quiescence areas, respectively. A1 and A1′ are nodes in the Miyagi quiescence area. A2 and A3 are nodes in the Boso quiescence area. A4 is a node in the Sanriku-haruka-oki quiescence area.

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