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本文概述了地球模型的自由振荡和面波频散问题的矩阵解法和数值解法,使用 ST1程序计算了 J—A 地球模型(Jordon and Anderson 1974)的本征频率;使用 RL1程序计算了J—A 模型和 GLC 模型(郭履灿,1981年)的面波频散,讨论了地球曲率和重力效应对面波的影响,由于 J—A 模型的高频部分和GLC 模型的低频部分都与观测资料有明显偏差,最新模型 PREM(Dzeiwonskiand Anderson,1981)又是一个海洋模型,为此,本文推荐了一个 PGY 初级地幔模型作为讲一步综合研究中国地区大陆结构时参考。
This paper gives an overview of the matrix solution and numerical solution of the free-oscillation and surface-wave dispersion problems of the earth model. The eigenfrequencies of the J-A earth model (Jordon and Anderson 1974) are calculated using the ST1 program. The RL1 program is used to calculate the J- The effects of earth curvature and gravity effects on surface waves are discussed. Since both the high frequency part of the J-A model and the low frequency part of the GLC model have significant deviations from the observed data The latest model, PREM (Dzeiwonskiand Anderson, 1981), is another ocean model. Therefore, a PGY primary mantle model is recommended as a reference for further study on the continental structure in China.