Fig. 4: Relationship between rupture velocity and stress parameters.
From: Earthquake rupture velocity and stress drop interaction in the Campi Flegrei volcanic caldera
Rupture velocity versus a, c apparent stress and b, d ARMS stress drop estimates. The black line represents the best-fit relationship, applied to the bin-averaged stress release values (displayed by boxplots). Data were binned using the Freedman–Diaconis rule51, which selects bin width based on data spread and sample size. a, b Include all events, while c, d show the results after excluding earthquakes with M > 3.2. This comparison highlights that the observed anti-correlation is not only controlled by the largest events.
