2012年的论文和以前的参考文献之间没有不一致之处。图2任意将所有中心的所有位移矢量的所有分量(x,y,z)在时间段开始时(约123000年前)设为零。此外，2012年的文章指出:与板块运动相关的地形水平运动将改变CF。随着时间的推移，这些缓慢的现象可以在CM和CF之间产生巨大的偏移，最大可达**数百米**。当从其他来源合理推断内部载荷的演变时，那么这些过程可能能够解释CM和CF之间当前大量的静态偏移。[行星科学][1]，表1.2，表示CF和CM之间的距离为0.80公里，引用[Yoder 1995][2]。另见[从一阶地形中发现行星内部对流的证据][3]*月球* 1973年3月，第7卷，172-180页>一段时间以来，人们已经知道地球存在一个质心(例如Jeffreys, 1962)。巴尔米诺等人(1972)对地球地形进行了球面调和分析，用等量的岩石代替了海洋，发现质心在图中长145°W、北纬42°S方向上偏移了1.1公里。从NASA备忘录[行星地质计划报告- 1981][4]:>对于地球来说，由于它的sialic([密度]~2.7)和simatic([密度]3.0-3.3)地壳的组合，CF向欧亚盾的方向向41.6°N, 34.7°E偏移，并靠近位于46°N和27°E的大陆省的中心(bill And Ferrari, 1978)。1度球谐系数表示地球质心与其“图形中心”之间的距离，实际上是地球表面一组跟踪站的中心。由于它们的物理意义，1次系数的时间变化可以用几种等效形式表示(1)作为沿Z轴(沿旋转轴)、X轴和Y轴的距离(单位为mm); (2) as (fully normalized) coefficients of the geopotential; (3) as the changes in mass (per unit area) that would give rise to the geopotential coefficients, expressed either in kg/m^2 or cm of equivalent water thickness. The relation between these forms can be found in Swenson et al (2008), equations 5 and 4... And [Planetary Surface Processes][6] (2011): >In fact, the Earth itself has a substantial center of mass – center of figure offset if the water filling the ocean basins is neglected. The floor of the Pacific Ocean is about 5 km below sea level, whereas the opposite hemisphere is dominated by the continental ... The waterless Earth's center of figure is thus offset from its center of mass by about 2.5 km at the present time. [1]: https://books.google.com/books?id=stFpBgAAQBAJ&pg=PA556&lpg=PA556&dq=distance%20CF%20and%20CM%20%22center%20of%20figure%22&source=bl&ots=4eTLab_1Dd&sig=Hj60t2cZXxtQivU9pA-bTbKApto&hl=en&sa=X&ved=0ahUKEwiwyqnI_9nLAhUBsIMKHbdOAFgQ6AEIKDAC#v=onepage&q=rcf&f=false [2]: https://books.google.com/books?id=aqjU_NHyre4C&pg=PA13&dq=yoder%20offset%20earth&hl=en&sa=X&ved=0ahUKEwiEqdOVidrLAhVIWh4KHYjoB80Q6AEIOzAE#v=onepage&q=figure%20offset&f=false [3]: http://link.springer.com/article/10.1007%2FBF00578814 [4]: https://books.google.com/books?id=xAscAn7HAAcC&q=%22For%20Earth,%20with%20its%20combination%20of%20sialic%22&dq=%22For%20Earth,%20with%20its%20combination%20of%20sialic%22&hl=en&sa=X&ved=0ahUKEwjb5pC6strLAhXBn4MKHatLBekQ6AEIKjAA [5]: http://gracetellus.jpl.nasa.gov/data/degree1/ [6]: https://books.google.com/books?id=3bQD1DJgliIC&pg=PA35&dq=below%20sea%20level,%20whereas%20the%20opposite%20hemisphere%20is%20dominated%20by%20the%202.5%20km%20time&hl=en&sa=X&ved=0ahUKEwiwr7qO2tvLAhXImR4KHVTmBjQQ6AEIHDAA#v=onepage&q=below%20sea%20level%2C%20whereas%20the%20opposite%20hemisphere%20is%20dominated%20by%20the%202.5%20km%20time&f=false