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Earth, Planets and Space
Figure 14 | Earth, Planets and Space

Figure 14

From: Long-period ground motions in a laterally inhomogeneous large sedimentary basin: observations and model simulations of long-period surface waves in the northern Kanto Basin, Japan

Figure 14

Effect of frequency-dependent Q S −1 on simulated seismograms. (a) Frequency dependence of Q S −1 derived from the JIVSM Q S of sedimentary layer 2 (black line) and the Brocher Q S relation assuming V S  = 0.9 km/s (navy blue lines). (b) Velocity seismograms of the transverse component at SIT003 for frequencies of 0.125–0.25 Hz (period of 4 to 8 s) derived from simulation results of the northern Tochigi earthquake with various central frequencies of Q S −1. The pink area in (a) represents the target frequency range in our study.

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