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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Structured regularization based velocity structure estimation in local earthquake tomography for the adaptation to velocity discontinuities

Fig. 10

a Estimated average P-wave velocities. Results of the proposed method, which are derived from real observational data, are shown by the red line. The grey line indicates the initial velocity model. Green and blues lines are the estimated P-wave velocity structures determined via the DLS and \({l}_{2}\)-smoothness regularization (L2) methods, respectively. b, c Vertical and horizontal variations in P-wave velocity. Arrows indicate 16 km depth. Cross-sectional locations are indicated in the inset map

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