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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Spatio-temporal characteristics of frictional properties on the subducting Pacific Plate off the east of Tohoku district, Japan estimated from stress drops of small earthquakes

Fig. 10

a Waveform of the UD component at the station N.TROH for the same earthquake as shown in Fig. 2a. The horizontal color bars show three time windows used in obtaining spectra, which were (P0) – 0.50 to 9.73 s, (P1) 0.78 to 11.01 s, and (P2) 2.06 to 12.29 s after the arrival time of P wave. Please refer to the figure caption of Fig. 2 for the gray line. b Waveform spectra for the four time windows shown in (a). c Waveform of the UD component at the station N.TROH for the same earthquake as shown in Fig. 2c. d Waveform spectra for the four time windows shown in (c). e Deconvolved spectra with the best-fit omega-squared model. The color lines show deconvolved source spectra, that is, ( b) divided by ( d), for three individual time windows with a resampling of frequency bands. The black broken line indicates the best-fit omega-squared model with corner frequencies of 1.0 and 3.2 Hz for the analyzed and EGF earthquakes, respectively

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