Fig. 4

Summary of the slip inversion analysis of the event γ. a Map showing the KiK-net stations used in the analysis (open squares). Red star and gray rectangles indicate the epicenter and the fault model composed of two planes, respectively. b Comparison of the synthetic waveforms from the estimated model (red) to the observed waveforms (black). UD, NS, and EW denote the up–down, north–south, and east–west components, respectively. Peak amplitude of observed waveforms is also shown for each component. c Snapshots of the slip velocity distribution history. The blue star in the top left panel denotes the epicenter location. d Final slip distribution of the event γ. The blue star indicates the hypocenter location. Gray dots denote the hypocenters of the relocated fore- and aftershocks within 5 km from the fault model. Contours are drawn every 2 m of the final slip. The slip directions are shown with an arrow whose length is proportional to the slip amount