“…The need to analyze the obtained solutions remains. It is challenging to characterize the real-time rupture process without using entire seismograms (e.g., Sánchez-Reyes et al, 2018;Uchide & Ide, 2007 The characteristics of slip patches we obtained are consistent with other studies of this earthquake in size, geometry, and timing of rupture process. The irregular rupture process of the Illapel earthquake appears in the change of rupture directivity along the dip (e.g., An et al, 2017;Meng et al, 2018;Ruiz et al, 2016;Tilmann et al, 2016) and the evolution of high-frequency generation areas (Ruiz et al, 2016;Yin et al, 2016) as reviewed in Section 1.…”