Fig. 9: Very low frequency earthquake (VLF) and low frequency earthquake (LFE) source durations plotted against the moment release associated with these events.

Sketched are also the characteristic moment (M0)-duration (T) trends proposed for slow (M0 α T) and regular (M0 α T3) earthquakes. In aggregate, both VLFs and LFEs only have a small range in their duration over a two-order or larger range in the moment release of individual events. Modified from71 and6 which contain references to the individual data sets used in their data compilations.