地层格架正则化约束下的二维立体层析反演

通过把地层格架信息作用于立体层析Fréchet导数矩阵，使得更新后的速度模型呈现出符合地质规律的块状特征.地层格架信息基于立体层析反演中得到的反射点位置进行非规则B样条插值拟合得到，因此在反演中它将会随着反射点位置的更新自然得到更新.与前人提出的保边缘层析算法或多层立体层析算法相比，本文提出的地层格架正则化无需引入混合正则化项或定义某种复杂的混合速度格式，更为直接也更容易实现.理论和实际数据算例证实了该正则化技巧的稳健性和可靠性，能够得到与实际地质构造特征更为一致的地质一致性反演结果.

2D stereo-tomography inversion constrained by regularization of stratum framework

This paper presents a regularization technique by incorporating the blocky geological boundary information into the Fréchet derivatives matrix of the stereo-tomography inversion. Using this method, the updated velocity model can automatically exhibit a blocky feature. The geological boundary information is updated based on the updated reflector positions, which can be provided by conventional stereo-tomography itself. Compared with the conventional tomography with mixed norms or the multi-layer stereo-tomography, the presented regularization technique does not depend on a hybrid regularization terms or a hybrid velocity format. It is more straightforward and easier to implement. The synthetic data example and the field seismic data case demonstrate the robustness of this method and its inversion results are more consistent with real geological structure.