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

Fig. 7

From: Application of a simplified calculation for full-wave microtremor H/V spectral ratio based on the diffuse field approximation to identify underground velocity structures

Fig. 7

Profiles of initial underground velocity structures (upper) and H/Vs (lower) at six KiK-net strong-motion stations, i.e., TCGH16, KMMH03, GIFH28, GIFH29, SZOH26, and KMMH14. In the upper panels, solid line shows the profile of PS logging data, dot line shows the half-space of PS logging data, and dashed line shows the cap layer. The numerical values show the “apparent” fundamental predominant period (Tp A0 ) at the interface of half-space of target layered medium in black and that at the uppermost interface of cap layer in red. In the lower panels, thick black curves denote the observed H/Vs, dashed curves show the observed H/V within one standard deviation, thin black curves denote the ellipticity of fundamental mode of Rayleigh waves, cyan curves denote the FW H/Vs, blue curves denote the SW H/Vs of layered media consisting of PS logging data, and red curves denote the SW H/Vs of cap-layered media

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