Fig. 5From: Structured regularization based velocity structure estimation in local earthquake tomography for the adaptation to velocity discontinuitiesa Anomalies of the estimated velocities from the baseline velocities in several layers for the estimation methods. Dots represent grid points. b Locations of relocated hypocenters in map-view (left) and cross-sectional view along a north–south profile (right). Grey and red circles represent the true (initial) and relocated hypocenters, respectively. East, north, and down directions are positive. The origin of the coordinates is \({35.25}^{\circ }\) N, \({138.25}^{\circ }\) E, and 0 km depthBack to article page