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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Identification of a nascent tectonic boundary in the San-in area, southwest Japan, using a 3D S-wave velocity structure obtained by ambient noise surface wave tomography

Fig. 5

Initial S-wave velocity model. Black dots show all transformed phase velocity dispersion curves on a depth–S-wave velocity approximation profile. The blue line and dots show the average S-wave velocity model for this profile, which was used as the initial S-wave velocity model in the inversion. The red lines indicate, as an example, the depth range used to compute the average S-wave velocity at 2.4 km depth

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