Figure 2

Conceptual model parameterization and finite element mesh. (a) The finite element model. Dark and light gray-shaded regions represent the poroelastic layers and the weak volcanic arc that are considered in the ‘Poroelastic rebound in the crust’ and ‘Weakened zone beneath volcanic arc’ sections, respectively. μ, η_M, and η_K are shear modulus, steady-state Maxwell viscosity, and transient Kelvin viscosity, respectively. (b) Central part of the finite element mesh. Red and black dots represent locations of the land and marine GPS stations, respectively. Thick white lines represent coast lines. (c) Central part of the finite element mesh with the upper plate removed. Color contours are the coseismic slip distribution (Iinuma et al., 2012).