Extended Data Fig. 2: The impact of variable lithosphere/slab viscosities (/) on the horizontal deviatoric normal stress (x-direction) in single slab models (upper row), double slab models (middle row) and the difference between single and double slab cases (bottom row).
From: Non-collisional orogeny in northeast Japan driven by nearby same-dip double subduction
The slab-mantle viscosity ratios tested are 125 a, 500 b, and 2000 c. All other parameter values are held constant, including the crust viscosity of 5 × 1019 Pas. The slab-mantle viscosity ration of panel b (500) is equivalent to that of the reference models presented in the main text. However, unlike in the reference models, power-law viscosity in the mantle is turned off in these models. Abbreviations are: PSP: Philippine Sea Plate and PAC: Pacific Plate.
