| 声波全波形反演目标函数性态 |
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| 引用本文： | 董良国,迟本鑫,陶纪霞,刘玉柱.声波全波形反演目标函数性态[J].地球物理学报,2013,56(10):3445-3460. |
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| 作者姓名： | 董良国 迟本鑫 陶纪霞 刘玉柱 |
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| 作者单位： | 同济大学海洋地质国家重点实验室, 上海 200092 |
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| 基金项目： | 国家自然科学基金(41274116);国家油气重大专项(2011ZX05005-005-007HZ)联合资助 |
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| 摘 要： | 地震波传播的复杂性所引起的地震反演中强烈的非线性问题是目前全波形反演在技术上遇到的最大难题,了解全波形反演中不同的目标函数随不同物性参数的不同摄动尺度的变化性态,对选择合理的反演方法和反演策略具有重要意义.本文参照Jannane等对波形反演目标函数性态的分析方法,通过变密度声波方程,分析了多种地震数据子集的不同目标函数随物性参数的摄动尺度的变化关系,重点分析了它们的非线性程度,为进行分步骤、分尺度全波形反演方法和反演策略的选择提供了理论指导.
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| 关 键 词： | 全波形反演 目标函数 摄动尺度 非线性 反演策略 数据子集 |
| 收稿时间： | 2013-01-28 |
Objective function behavior in acoustic full-waveform inversion |
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| DONG Liang-Guo,CHI Ben-Xin,TAO Ji-Xia,LIU Yu-Zhu.Objective function behavior in acoustic full-waveform inversion[J].Chinese Journal of Geophysics,2013,56(10):3445-3460. |
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| Authors: | DONG Liang-Guo CHI Ben-Xin TAO Ji-Xia LIU Yu-Zhu |
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| Institution: | State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China |
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| Abstract: | The main difficulty in seismic full-waveform inversion is the strong nonlinearity, which is caused by the complexity of seismic wave propagation. The analysis of the behavior of the objective function variation with the parameter perturbation scale can help us to choose the reasonable inversion method and strategy. According to Jannane's method to analyze the objective function behavior, the relationship between the objective function calculated by different seismic data subset and the parameter perturbation scale is studied, especially the nonlinearity. The analysis results will provide some theoretical guidance for FWI to implement the multi-step and multi-scale inversion strategy. |
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| Keywords: | Full-waveform inversion Objective function Perturbation scale Nonlinearity Inversion strategy Seismic data subset |
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