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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Shear wave splitting and seismic velocity structure in the focal area of the earthquake swarm and their relation with earthquake swarm activity in the Noto Peninsula, central Japan

Fig. 3

Result of seismic velocity tomography: horizontal slice. a Bouguer gravity anomaly, modified from Sawada et al. (2012). The ellipse with broken line shows the approximate location of the inherited caldera suggested by the low gravity. b The middle and c right figures show the horizontal slice of Vp at depths of 6 km and 18 km, respectively. Earthquakes within a ± 3 km depth range are plotted. a The white and black stars in c denote the M5.4 earthquake on June 19, 2022, and the M6.5 earthquake on May 5, 2023, respectively. Grey and black dots denote the earthquake from 2019 before the M6.5 earthquake and after the M6.5 earthquake, respectively. Red small squares in b and c denote the seismic station used in this study

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