Fig. 4

Stress rotation as a function of subduction interface depth. The median vertical (red) and horizontal (blue) stress rotations are found for all inversion bins in 5-km depth intervals. Multiple realizations are performed by sampling a rotation for each bin from its bootstrap uncertainty, and the median is set to zero if it is not significantly different from zero at 1-sigma uncertainty. Vertical black lines and letters separate zones A, B, and C, as defined by Lay et al. (2012). a Tohoku-Oki earthquake coseismic stress rotation. Gray curves indicate average mainshock slip as a function of depth from slip models of Shao et al. (2011), Ide et al. (2011), Yagi and Fukahata (2011), Yamazaki et al. (2011) and Minson et al. (2014). b Tohoku-Oki earthquake postseismic stress rotation, P1 shown as solid lines and P2 as dashed lines. Gray curves indicate average afterslip as a function of depth from models of Ozawa et al. (2011) and Yamagiwa et al. (2015). c Maule earthquake coseismic stress rotation. Gray curves indicate mainshock slip models of Delouis et al. (2010), Lorito et al. (2011), Moreno et al. (2012), Pollitz et al. (2011) and Yue et al. (2014). d Maule earthquake postseismic stress rotation, P1 shown as solid lines and P2 as dashed lines. Gray curves indicate afterslip models of Bedford et al. (2013) and Lin et al. (2013). e Sumatra–Andaman earthquake coseismic stress rotation. Gray curves indicate mainshock slip models of Ammon et al. (2005), Rhie et al. (2007) and Chlieh et al. (2007), f Sumatra–Andaman earthquake postseismic stress rotation, P1 shown as solid lines, P2 as dashed lines, and P3 as dash-dot lines. Gray curve indicates afterslip model of Chlieh et al. (2007), black curve the 2005 M8.6 Nias–Simeulue earthquake slip model of Ji (2005)