大地测量在近代发展的内部地球物理学中的作用

我们的目的是说明大地测量学的近代发展如何为解决地球动力学的基本问题提供新的工具。例如:1.全球规模的重力场的知识将给出关于地幔中过渡带位置的信息,或关于地核-地幔交界面的地形的资料;2.在地球表面上的高精度定位将允许测量构造板块的位移,同时将对地震预报作出贡献;3.用新技术所确定的极移的分析,将能阐明其阻尼问题,维持这一运动的能源问题以及地核-地幔耦合等问题。

THE ROLE OF GEODESY ON RECENT DEVELOPMENTS OF INTERNAL GEOPHYSICS

We aim to explain here how the recent technological developments in geodesy have become new tools to solve basic problems in geodynamics. As examples: （1） the knowledge of the gravity field at planetary scale gives informations about the position of transition zones in the mantle or on the topography of the core-mantle interface. （2） high precision positioning at the surface of the earth will allow to measure tectonic plates displacements and contribute to earthquake predictions. （3） analysis of the polar motion determined by the new techn que should clarify the question of its damping,the source of power for its maintenance and the core-mantle coupling.