论文部分内容阅读
本文将谱分析方法应用于亚欧大陆地震活动的空间序列分析,发现本大陆地震活动在南北向和东西向上均存在等间距分布特征,并得到以4°、7.4°、12.8°、27.6°左右为主周期的空间谱结构。根据Wagner大地水准面资料得出了地幔对流模式,结果表明亚欧大陆正处在四面受压的力学对抗环境中。用板壳与柱壳模型所作的简化计算表明,上述主周期谱系可能是大陆上部厚度分别为15km、40km、120km和600km左右的地层受压屈曲产生的。
In this paper, the spectral analysis method is applied to the spatial sequence analysis of the seismic activity in Asia and Europe. It is found that the seismic activity in this continent has equidistance distribution in north-south direction and east-west direction, and has the features of 4 °, 7.4 °, 12.8 °, 27.6 ° The main periodic spatial structure of the spectrum. Based on the Wagner geoid data, the convection pattern of the mantle was obtained. The results show that the Eurasian continent is in a confined mechanical confrontation environment. The simplified calculation made by the plate shell model and the shell model shows that the above main periodic lineages may be caused by the buckling of the formation with the upper continental thickness of 15km, 40km, 120km and 600km respectively.