Fig. 4From: Characteristics of seismicity in the southern Okinawa Trough and their relation to back-arc rifting processesRelationship between b values (red curve), number of seismicity used to calculate b values at each grid point (blue curve; see also Additional file 1: Figure S3a) and the magmatic intrusion along the YA01 profile. The seismic reflection image is from Arai et al. (2017)Back to article page