Fig. 1
From: Catalog of small repeating earthquakes for the Japanese Islands
Example of vertical component waveforms for a small repeating earthquake sequence. The 1–4 Hz bandpass-filtered waveforms are shown. The onset (YYYMMDDHHMMSS format) and JMA magnitude of each earthquake are listed on the left side of each trace. Each trace is normalized by the maximum amplitude, which is shown at right. The timing of the 2011 Mw 9.0 Tohoku-Oki Earthquake is indicated by the dashed line. The inset map shows the locations of the repeating earthquake sequence (Group 1316; star) and the seismic station that recorded the waveforms (N.ONDH; triangle)