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首页> 外文会议>International conference on environmental and engineering geophysics;ICEEG 2010 >The research and application in inversion method of rayleigh surface wave dispersion curves
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The research and application in inversion method of rayleigh surface wave dispersion curves

机译：瑞利面波频散曲线反演方法的研究与应用

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摘要

Surface wave exploration has an advantage over all other wave exploration in complex shallow geological structure, especially in desert, so it can replace refracting wave method and micro-seismic logging method in oil seismic exploration. The self-adaptively iterative damping least square method by weighting matrix is proposed in this paper. The method increase weighting value for gradient when get gradient, and increase weighing value for independent variable of every component, and standardize to conduct gradient and step size when hunt the least of object function, then bring down abnormal state degree. The new efficient algorithm can overcome such serious shortcoming existent in the classic least square Method as the strict dependence on initial model. The inversion results of the new theoretical model and field dispersion data indicate that this inversion is characterized by good stability, high accuracy and strong resolution and has good application result in shallow geological structure.
机译：在复杂的浅层地质结构中，尤其是在沙漠中，地表波勘探具有优于其他所有波探的优势，因此它可以代替折射波法和微地震测井法进行石油地震勘探。提出了一种基于加权矩阵的自适应迭代阻尼最小二乘方法。该方法在得到梯度时增加梯度的权重值，在增加每个分量的自变量时增加梯度的权重值，并在寻找最小的目标函数时进行标准化以进行梯度和步长的减小，从而降低异常状态的程度。新的高效算法可以克服经典最小二乘法中对初始模型的严格依赖等严重缺陷。新的理论模型和场散数据反演结果表明，该反演具有稳定性好，精度高，分辨力强等特点，在浅层地质构造中具有良好的应用效果。

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