Fig. 4: OBS seismicity distribution with geophysical properties.
From: Broad fault zones enable deep fluid transport and limit earthquake magnitudes
b-value fluctuation with bathymetry (a) and residual Mantle Bouguer Anomaly (rMBA) (b). The blue dots show the b-value estimated by the repeated median technique for 100-event windows, plotted at the center of each window (Methods). The windows are shifted by 1 event after each calculation. The red line in a shows the average linear trend. The shaded area shows the standard error of the b-values. The blue and green boxes in b show the b-values for rMBA < −3 mgal and rMBA > −3 mgal, respectively. c Magnitude distribution of the events that occurred at areas with rMBA < −3mgal (blue circles) and rMBA > −3 mgal (green circles). Both groups have equal number of events (185 events each). All standard errors are derived by 1,000,000 bootstrap resamplings. Relative frequency of rMBA (d) and bathymetry (e) corresponding to the epicenters of our complete dataset events (red bars) and to the background sample (blue bars; see Methods).
