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Fig. 3 | Earth, Planets and Space

Fig. 3

From: Distribution of low-frequency earthquakes accompanying the very low frequency earthquakes along the Ryukyu Trench

Fig. 3

Envelope waveforms at the stations in the Yaeyama area. Envelopes were computed using the root-mean-square (RMS) amplitude with 10-s boxcar windows and the composite horizontal components of the seismograms, which were band-pass-filtered within the range 1–2 Hz. The red dotted lines show the low-frequency earthquakes (LFEs). Blue dotted line shows the ordinary earthquake

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