Scientific Development Research

A force acting on the inner surface of the earths crust is analyzed here, which is called the ave- rage solar gravitational field stress. The four-dimensional energy momentum tensor of the solar gravitational field is contracted about two unit coordinate vectors[1] to give the solar gravitational field stress, and then obtained by averaging over time. The mean solar gravitational field stress and its first derivative have maximum values at 0° and ±30° latitude in turn, and both have minimum values at ±90° latitude. In each statistical unit with a latitude of 5° in the northern hemisphere, the ratio of the land area above 200m above sea level (or land area above 1000m above sea level, excluding ice and snow land) to the total land area of the unit is calculated. The relative area of land above 200m above sea level is -5. There are minimum values in the range from 0° to 5° and from 25° to 30°. The relative area of land above 1000 altitude has a maximum value in the range of latitude -5° to 5° and 35° to 40°. At latitude 90° Statistics cannot be done nearby (the above statistical results can be visually observed on the world topographic map). Compare the above two sets of extreme values in the northern hemisphere. The two maxima (0°, 30°) are basically consistent with the two statistical maxima of the relative land area above 1000m above sea level, there is a deviation at the 30° point, and the minimum value at the 90° point cannot be compared. The comparison in the southern hemisphere was the same. The physical explanation is plastic deformation of the crust, and an in- direct explanation is given.

Solar gravitational field; Crust; Land