Fig. 7From: Mathematical modelling of mantle convection at a high Rayleigh number with variable viscosity and viscous dissipationHorizontally average temperature vs depth profiles at viscosity contrasts \(\Delta \eta =10^{15}\) and \(\Delta \eta =10^{30}\) for convection with \(\mu =0.0\), \(\mu =0.5\) and \(\mu =1.0\) at \(\theta _0 = 0.1\) and \({\mathrm{Ra}} = 10^7\) with viscous dissipation \(D=0.3\) and \(D=0.6\)Back to article page