Figure 4. The past century of large earthquakes in the Hyuga-nada region reveals an absence of events greater than magnitude 7.5. Instead we observe repeater-like behavior of clustered magnitude 7 or so shocks. The 2024 rupture area is estimated from the first 24 hours of aftershocks, and so the rupture area is likely smaller than shown. 1996 rupture areas are from Yagi et al. (1999), and the 1968 rupture area from Yagi and Kikuchi (2003). The USGS ANSS catalog has many spurious magnitudes in this region that are too high, so we use JMA magnitudes (Mj), which differ slightly from more widely reported moment magnitudes (Mw). Credit: Temblor, CC BY-NC-ND 4.0