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Fig. 8 | Earth, Planets and Space

Fig. 8

From: FDM simulation of earthquakes off western Kyushu, Japan, using a land–ocean unified 3D structure model

Fig. 8

a Map view of the nodes of the fault grid, with 15 nodes in the horizontal direction and 6 nodes in the vertical direction. Epicenter of EV1 (yellow star) and the 24-h aftershocks (\(M_{\text{JMA}} \ge 3\)) (red circles) are also shown. b Distribution of cross-correlation. The time attached to each figure denotes the lag time (τ) plus the half width of the source time function (3 s). The JMA hypocenter (+) and the point of maximum averaged cross-correlation of 0.53 (cross) are shown in the top figure for 3 s (i.e., τ = 0 s) and the middle figure for 7 s (τ = 4 s). c Examples of normalized velocity waveforms (Norm.Vel.). Synthetics correspond to the “grand” maximum value of cross-correlation: That is, a time of 7 s (lag time τ = 4 s) and the grid point where range = 25.5 km and depth = 15.1 km are used to generate the synthetics

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