Fig. 5: Energy partitioning and radiation efficiency of Campi Flegrei earthquakes.
From: Earthquake rupture velocity and stress drop interaction in the Campi Flegrei volcanic caldera

The “Savage-Wood” seismic radiation efficiency (\({\eta }_{{SW}}=\frac{{2\tau }_{a}}{\Delta \sigma }\)), is plotted as a function of seismic moment in a log-log scale, with a histogram of observed values. The dashed line at \(\eta =0.5\) represents the threshold distinguishing undershoot from overshoot in dynamic weakening mechanisms. Black circles represent the bin-averaged values.