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采用基于广义标准线性体Boltzmann叠加原理的固体流变模型来描述粘弹性海底底质结构,分析了沉积层和基岩的纵、横波速度频散和衰减的特点,计算了海水沉积层界面和沉积层基岩界面位移势反射和折射系数和能量反射和折射系数。结果表明,采取本模型的粘弹性海底的速度频散、衰减和已有文献的实验数据符合较好,能准确的描述海底底质的主要性质,反射和折射系数和声波的频率有关。
A solid rheological model based on the generalized standard Boltzmann superposition theory was used to describe the viscoelastic sea floor structure. The characteristics of dispersion and attenuation of sediment and bedrock velocities were analyzed, and the interface and deposition of seawater sediments were calculated. Bedrock interface displacement potential reflection and refraction coefficient and energy reflection and refraction coefficient. The results show that the velocity dispersion and attenuation of the viscoelastic seafloor using this model are in good agreement with the experimental data of the existing literature, and can accurately describe the main properties of the sea bottom sediment. The reflection and refraction coefficients are related to the frequency of sound waves.