摘要
外天体对地球的力学扰动产生几种共生的天文和地球物理现象 ,如 :地球惯性轴和旋转轴在空间的进动和章动 ,旋转轴相对地球本身的近周日摆动 ,地面测站的垂线偏差和重力的周期性变化等。岁差章动力矩是解释这些现象的前提条件 ,也是建立刚体地球章动序列的最主要方法之一。本文顾及了日月高阶引潮力位对岁差章动力矩的影响 ,进行了理论推导 。
External heavenly bodies cause some astronomical and geophysical phenomena to mechanical anomaly of earth such as precession and nutation of inertial and rotational axis of earth in space,swing of rotational axis for earth and the cyclical variety of deviation of plumb line and gravity in position of observation.The moment of precession and nutation is a prerequisite for explaining these phenomena and one main way of building nutational serial of Rigid Earth.Considering the influence of high step tidal generating potential to the moment of precession and nutation,this paper gives a practical equation through theoretical deduction.
出处
《信息工程大学学报》
2002年第1期1-4,共4页
Journal of Information Engineering University
基金
国家自然科学基金资助 (4 0 1740 0 2 )
