Fig. 2: Empirical cumulative density function (ECDF) value of an event magnitude (m(i)) compared to that of the subsequent event (m(i + 1)).
From: Seismic magnitude clustering is prevalent in field and laboratory catalogs
Comparisons are for A the real, filtered southern California catalog and B this catalog randomized by event time. Color scale shows the number of event comparisons that fall into each 0.2 × 0.2 bin by illustrating the difference relative to the expected mean (total number of comparisons divided by total number of bins). Diagonal line highlights cases where an event has the same ECDF bin value as the subsequent event.
