“…Several EM induction surveys have been conducted in strain concentration zones in Japan: the NKTZ (Goto et al., 2005; Ogawa & Honkura, 2004; Takakura et al., 1997; Usui et al., 2021; Uyeshima et al., 2005; Yoshimura et al., 2009), the SCZEJS (Toh et al., 2006), SCZGS (Ichihara et al., 2011), SCZOBR (Ichihara et al., 2014; Ishizu et al., 2022; Mishina, 2009; Ogawa et al., 2001, 2014; Yamaya et al., 2022), and Ishikari lowland (Yamaya et al., 2017). However, these studies did not investigate the regional three‐dimensional (3‐D) crustal structure in the SCZGS or the spatial differences in the strain concentration mechanism.…”