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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Deep crustal structure around the Atotsugawa fault system, central Japan: A weak zone below the seismogenic zone and its role in earthquake generation

Fig. 7

Along-fault vertical cross sections of (a) P- and (b) S-wave velocity perturbations, (c) V p /V s values, and (d) P- and (e) S-wave absolute velocities along the line shown in the inset map. Gray and white circles denote earthquakes and low-frequency earthquakes relocated with the final 3D velocity models, respectively. Earthquakes within 10 km of the line are plotted. The shallower and deeper black dashed lines in each panel show the Conrad and Moho discontinuities, respectively, adopted in the inversion (Zhao et al., 1992b). The white arrow in (b) indicates the low-velocity anomaly in the upper crust discussed in the text.

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