Figure 4: Fit parameters T1 and B1.
From: Evidence for a difference in rupture initiation between small and large earthquakes
(a) First-corner time of the linear piecewise fit model as a function of magnitude for all the analysed events on a log-linear scale. The colour scale indicates the number of data points used for the average computation at time T1. (b) Slope of the first-line segment of the fit model as a function of magnitude for all the analysed events on a log-linear scale. For each individual B1 value, the colour is the same as that used in a for the corresponding T1 data point. In a and b, small circles represent the crustal events (source depth <30 km), and triangles represent the subcrustal events (source depth ⩾30 km). The solid grey line shows the linear best fit function, and the dashed lines are the 95% confidence intervals for new observations given the existing fit to the data. Error bars for individual data points are smaller than the symbol size. (c) Magnification of the LPW curve until time T1 for representative events. A common initial value has been assigned to compare the shape of the curves. The insert box shows the expected initial slope of the LPW curve for different magnitudes given the observed trend of B1 with magnitude.
