Secondary rupture maps

Secondary rupture maps for the Landers, Hector Mine, El Mayor Cucapah, and Ridgecrest (foreshock and mainshock) events based on the maps in the FDHI database. The rupture map for the El Mayor-Cucapah earthquake includes ruptures mapped from radar data at its northern end into southern California and its southern end through the Colorado River Delta (Fletcher et al., 2014). We remove these radar-based features, which are mapped more simply than the field and lidar-based ruptures, and thus induce a biased population of long ruptures that increase far-field rupture density unrealistically. Similarly, the foreshock and mainshock Ridgecrest maps contain some features that are doubly mapped, of which we remove the simplified traces (Ponti et al., 2020; DuRoss et al., 2020).