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Earth, Planets and Space
Fig. 4. | Earth, Planets and Space

Fig. 4.

From: Outline of the 2011 off the Pacific coast of Tohoku Earthquake (Mw 9.0) —Earthquake Early Warning and observed seismic intensity—

Fig. 4.

Acceleration waveform and seismic intensity estimated in real-time manner at OURI and IYASAT. P and S wave arrival times are shown by dotted lines. The arrow labeled “Trigger” indicates 14:46:40.2, when station OURI triggered the EEW procedure. For comparison, acceleration and intensity at IWTH25 (KiK-net) are also shown at the time of the 2008 Iwate Miyagi Nairiku earthquake (June 14, 2008, focal depth is 8 km, Mw 7.0).

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