Fig. 6
From: A possible mechanism for spontaneous cyclic back-arc spreading
Results for case 7 a, c with ϕAL = 0.2, case 8 b, d with ϕAL = 0.05. Atr = 100 Ma and σyield = 200 MPa. a, b Changes in velocities of the subducting plate (Vsp), the overriding plate (Vop) and the trench (Vtr) combined with the average dip angle of the slab surface (Dip) measured in the depth range of 200–300 km. c, d Slab geometries. The distribution of effective viscosity is shown by different colors and arrows indicate the velocity field