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本文提出一种用于地震振幅数据线性反演的有效方法。文中采用渐近射线理论(ART)进行正演问题的参数化。指出同时使用运动学与动力学两种数据可以导致模型参数更好的分辨,并能描述诸如密度、横波速度以及常见纵波速度计算等附加信息。程序对采用首波、一次和多次反射波,含有低速层和多个激发点的层状和水平结构地层模型作了试验。对相对简单的模型取得的良好数值结果表明,该方法进一步应用于更实际和更复杂的地质结构是可行的。
This paper presents an effective method for linear inversion of seismic amplitude data. In this paper, asymptotic ray theory (ART) is used to parameterize the forward problem. It is pointed out that the simultaneous use of both kinematics and dynamics results in better resolution of the model parameters and can describe additional information such as density, shear wave velocity, and common longitudinal wave velocity calculations. The program tests stratigraphic and horizontal structural stratigraphic models that employ the first wave, the first wave, and the multiple reflections, including the low velocity layer and multiple excitation points. The good numerical results obtained for a relatively simple model show that it is feasible to apply this method to more practical and complex geological structures.