Asymmetry Between the North Hemisphere and the South Hemisphere of the Earth

Abstract

AbstractBased on new calculations and space observational data, we make a further study on the asymmetry between the north hemisphere and the south hemisphere of the Earth. Calculations show that the heat loss of the south hemisphere is 33% more than that of the north hemisphere. The heat loss from the mantle of the south hemisphere is twice of that of the north hemisphere. Comparing the global S wave velocity distribution, it is found that the upper mantle is characterized by low velocity and high temperature for the south hemisphere, and by high velocity and low temperature for the north hemisphere. The mass center of the Earth seems to be deviated toward the north hemisphere. Annual changing rates of lengths of the Earth's circumferences along longitude and latitude indicate that the south hemisphere is expanding and the north hemisphere is contracting. Data of space geodesy also verify that the south hemisphere is in extension and the north hemisphere is in compression. A preliminary geodynamic explanation for such asymmetry of the Earth is presented.