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Table 1. S-wave velocity structure model for calculating theoretical travel time and the ray path.

From: Source model for strong ground motion generation in the frequency range 0.1–10 Hz during the 2011 Tohoku earthquake

Depth (km)

S-wave velocity (km/s)

0

3.20

6

3.42

15

3.82

28

4.46

  1. * This velocity structure model is approximated from the regional velocity structure model of Koketsu et al. (2008).