Temperature Distributions within the Earth

Several features of the temperature distribution within the earth's interior were derived from the modern theory of solids. The main results are as follows: (1) GRÜNEISEN'S parameter in the B-layer (33-413km.) must be greater than 1.5. (2) Temperature in the D-layer (1000-2898km.) increases almost linearly with increasing depth and its gradient depends on the mean atomic weight rather than on GRÜNEISEN'S parameter. For instance, the gradient is 1.79°/km. for A=20 and 3.74°/km. for A=40. (4) The temperature gradient in the B-layer decreases with increasing depth.