北京及其邻区Q值分布特征的研究

• 作 者: 付昌洪 朱传镇
• 机 构: 国家地震局地球物理所,国家地震局地球物理所
• 出 处: 西北地震学报
• 发表日期: 1980年03期
• 关键词: 地震波 地球介质 几何扩散 完全弹性 波阵面 振幅 值分布 衰减特性 震源 振幅谱

地震波通过地球介质时,由于实际介质並非完全弹性,因此,地震波的振幅除了因波阵面的几何扩散而减少外,还有因介质内摩擦等因素造成的吸收而使地震波的振幅随距离而减小。研究地震波在地球介质中的衰减特性,对研究震源本身及其周围环境都很重要,归纳起来有以下几方面的意义: 1.用于解决一系列与地震波在实际地球介质中传播有关的地震问题;

When the seismic wave passes through the Earth’s medium, the amplitude of the seismic wave is reduced due to the geometrical diffusion of the wave front due to the fact that the actual medium is not completely elastic, and the amplitude of the seismic wave decreases with the distance due to the absorption caused by the friction within the medium small. Studying the attenuation characteristics of seismic waves in the Earth’s medium is very important for the study of the source itself and the surrounding environment. It has the following significance: 1. It is used to solve a series of seismic problems related to the propagation of seismic waves in the earth’s medium ;