Based on the preliminary reference Earth model ( PREM ), The 4th order Runge-Kutta numerical integration technique was used to compute the Love numbers for the surface loads, body tides and internal loads. The spatial distribution and the frequency dependence of the Love numbers were investigated. 基于PREM地球模型和4阶Runge-Kutta数值积分方法,解算了表面负荷Love数、体潮Love数和内部负荷Love数,探讨了不同Love数的空间分布特征及与信号频率依赖关系。
Based on the preliminary reference Earth model ( PREM ), the deformation theory for a spherically stratified and non-rotating Earth with perfectly elastic and isotropic structural relation ( SNREI Earth ) is employed to investigate the deformation characteristics of the Earth under different forces. 基于PREM模型,利用非自转、球型分层、各向同性、理想弹性(SNREI)地球的形变理论,讨论了地球在不同驱动力作用下的形变特征。
Our result is almost consistent with frequency of the modes of preliminary reference earth model ( PREM ). The inconsistent modes of spheroidal and toroidal free oscillation may result from lateral heterogeneous or / and anisotropic media of the earth. 频率与PREM模型略微不一致的球型或环型振荡可以解释为地球介质的横向不均匀性和各向异性所致。