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

Fig. 7

From: From ambient vibration data analysis to 1D ground-motion prediction of the Mj 5.9 and the Mj 6.5 Kumamoto earthquakes in the Kumamoto alluvial plain, Japan

Fig. 7

Nonlinear modulus reduction (G/G0 vs shear strain-ɣ) and damping (D vs shear strain-ɣ) curves obtained from cyclic triaxial testing of soil samples collected at the KUMA site. The symbols represent the experimental data while the solid lines represent the Hardin and Drnevich (1972) hyperbolic model fitting of the experimental data (H–D model). T1 sample was collected at depths between 4 and 5 m, T2 between 7.7 and 8.7 m, T3 between 13 and 14 m and T4 between 20 and 21 m (redrawn from OYO, 2020)

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