RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 15, ES3001, doi:10.2205/2015ES000552, 2015 ![]() Figure 3. Calculated structure of mantle convection at the average Rayleigh number $1.1 \times 10^4$. Dimensionless temperature is shown in color and velocities are shown by arrows. Viscosity jumps at the base of highly viscous continent and at the boundary of the upper and lower mantle are shown by white lines. (a) – convection with a supercontinent at the time of inclusion of the spherical $D"$ layer. (b) – established convection with break-up of the $D"$ layer into two piles. Copyright 2015 by the Geophysical Center RAS. Generated from LaTeX source by ELXpaper, v.1.3 software package. |