Extended Data Fig. 4: Late-interseismic (t = T) motion at 250 km from trench as controlled by the recurrence interval T and affected by mantle wedge viscosity in 3-D synthetic tests.
From: Interseismic secondary zone of subsidence during earthquake cycles in subduction zones
Shown here are separate and combined contributions from of megathrust locking and viscoelastic relaxation of earthquake-induced stress. a, vertical rate. b, horizontal rate. The Maxwell viscosity ηM = 2 × 109 Pa s, and the Kelvin viscosity \({\eta }_{{\rm{K}}}=0.1{\eta }_{{\rm{M}}}\). For models with different T and/or viscosity values, all other parameters remain unchanged. For longer recurrence intervals or lower viscosities, earthquake-induced stress is more fully relaxed at the late-interseismic stage, so that the locking effect is more dominant resulting in faster subsidence (also see Extended Data Fig. 2).
