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Progress in Earth and Planetary Science
Fig. 7 | Progress in Earth and Planetary Science

Fig. 7

From: Heterogeneous rheology of Japan subduction zone revealed by postseismic deformation of the 2011 Tohoku-oki earthquake

Fig. 7

The effect of oceanic asthenosphere on the 3-year postseismic deformation a The surface displacement by the model with activation volume (\(\Omega )\) vary as ~ 21, ~ 13, and ~ 7 cm3/mol while water content (COH) was fixed to 47 ppm H/Si. The corresponding 1-D viscosity profiles are shown in top panel. b The surface displacement by the model with COH vary as ~ 7, ~ 47, ~ 321 ppm H/Si while \(\Omega\) was fixed to ~ 13 cm3/mol. The corresponding 1-D viscosity profiles are displayed in top panel. See model details in Additional file 1: Table S3. c The trench-normal profile shows the viscosity distribution and mantle flow pattern for the model with \(\Omega\)= ~ 13 cm3/mol and COH = 47 ppm H/Si are shown. d The distribution of strain difference corresponds to the model shown in (c). Strain difference = strain in depth-dependent model – strain in base model. All viscous strain (second invariant of the deviatoric strain tensor) is normalized by the coseismic strain

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