Figure 27From: Towards scaling laws for subduction initiation on terrestrial planets: constraints from two-dimensional steady-state convection simulationsCritical yield stress τ y,c r as a function of Frank-Kamenetskii parameter θ. The Arrhenius viscosity is calculated with the non-dimensional surface temperature T 0 and the activation energy E that gives the corresponding θ. Lower T 0 gives a higher viscosity contrast Δ η Arr.Back to article page