Fig. 6

MT inversion of the test earthquake using the F-net 1D velocity structure model. Depth variation of the variance reduction (V.R.) is shown in the right subfigure. The number above each focal sphere is the estimated Mw at each depth. Black and red traces are the target and synthetic displacement waveforms for periods of 30–100 s at 11 F-net stations, respectively. The focal sphere of the target earthquake is shown in the right-bottom corner of the right subfigure