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一个地区的地震灾害取决于两个因素,即震源和传播地震波的介质特征,而描述地震波在地球介质中的传播特征有两个重要的物理量,一是地震波的传播速度,二是能量传播的衰减,亦即描述介质吸收特性的Q值。地震波衰减快慢与传播路径上的介质情况有很大关系,通过对地震波穿过不同地区的衰减大小的研究,可以了解介质背景。近年来,国
Earthquake disaster in one area depends on two factors, that is, the media characteristics of source and propagation seismic waves. There are two important physical quantities that describe the propagation characteristics of seismic waves in the Earth’s medium. One is the propagation velocity of seismic waves and the other is the attenuation of energy propagation , That is, the Q value that describes the absorption characteristics of the medium. The attenuation of seismic waves is closely related to the medium conditions in the propagation path. By studying the attenuation of seismic waves passing through different regions, we can understand the medium background. In recent years, the country