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

Fig. 3

From: Attenuation contrast in mantle wedge across the volcanic front of northeastern Japan that controls propagations of high-frequency S-wave later phases

Fig. 3

East–west seismograms of intraslab earthquakes. Locations of the earthquakes and stations are shown in Fig. 1b. a, c Seismograms bandpass-filtered at 1–32 Hz, and b, d their MS envelopes in different frequency ranges: 1–8 Hz (filled gray lines) and 8–32 Hz (thick black lines). Arrows indicate the identified peak amplitudes of the HFLPs. White inverted triangles show the expected delay times of the waves scattered at the passing points (their temporal ranges correspond to the location uncertainties displayed in Fig. 5). Gray diamonds indicate the expected delay times at the passing points in Fig. 7. Gray curves denote the arrival times of the direct P and S waves expected for the JMA2001 one-dimensional velocity model (Ueno et al. 2002). Dashed lines represent the locations of the arc volcanic front (VF)

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