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Earth’s density flattening and hypothesis of latitudinal normal density |
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| Authors: | Hao Xiaoguang Xu Houze LIU Dajie |
| Institution: | 1. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China;Geodesy Department of Tongji University, Shanghai 200092, China 2. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China 3. Geodesy Department of Tongji University, Shanghai 200092, China |
| Abstract: | In this paper, the definition of latitudinal density and density flattening of the level ellipsoid is given, and integral formulas of latitudinal density for pole gravity and equator gravity are derived. According to the pole gravity condition and equator gravity condition for the level ellipsoid, latitudinal density distribution function of the level ellipsoid is obtained. It is proved mathematically that latitudinal density of the earth’s equator is larger than that of the pole, the earth’s density flattening calculated preliminarily is 1/322, and hypothesis of the earth’s latitudinal normal density is further proposed, so that theoretical preparation for studying the forming cause of the earth gravity in problems such as continent drift, mantle convection, and submarine extension is made well. |
| Keywords: | latitudinal density density flattening hypothesis of Earth’ s latitudinal normal density |
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