| 频率域波形反演中与频率相关的影响因素分析 |
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| 引用本文： | 刘国峰,刘洪,孟小红,闫浩飞.频率域波形反演中与频率相关的影响因素分析[J].地球物理学报,2012,55(4):1345-1353. |
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| 作者姓名： | 刘国峰 刘洪 孟小红 闫浩飞 |
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| 作者单位： | 1. 中国地质大学(北京)地球探测与信息技术教育部重点实验室, 北京 100083;
2. 中国科学院地质与地球物理研究所油气资源重点实验室, 北京 100029;
3. 中国国土资源航空物探遥感中心, 北京 100083 |
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| 基金项目： | 国家高技术研究发展计划(863)，国家自然科学基金，中央高校基本科研业务费 |
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| 摘 要： | 波动方程深度偏移是解决复杂地质体成像的关键技术,基于波动方程的速度建模为其提供更为精确的速度模型.频率域波形反演是目前研究最为广泛的波动方程速度建模方法之一,它推动了波形反演在勘探尺度下的应用.本文通过对频率域波形反演的实现,分析对比了其有效执行过程中与频率相关的影响因素.介绍了时间域的多尺度反演方法在频率域的一种实现方式,对比分析了输入数据的频点带宽和应用的子波频带范围不同时对反演结果的影响.本文通过设计的山地地质模型对频率域波形反演进行了测试和对比,得到的结论为频率域波形反演的有效计算提供了依据和参考.
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| 关 键 词： | 频率域波形反演 多尺度 频带宽度 子波 |
| 收稿时间： | 2011-05-31 |
Frequency-related factors analysis in frequency domain waveform inversion |
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| LIU Guo-Feng
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LIU Hong
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MENG Xiao-Hong
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YAN Hao-Fei.Frequency-related factors analysis in frequency domain waveform inversion[J].Chinese Journal of Geophysics,2012,55(4):1345-1353. |
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| Authors: | LIU Guo-Feng LIU Hong MENG Xiao-Hong YAN Hao-Fei |
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| Institution: | 1. Key Laboratory of Detection and Information Technology, Ministry of Education, China University of Geosciences, Beijing 100083, China;
2. Key Laboratory of Petroleum Resource Research, Chinese Academy of Sciences, Beijing 100029, China;
3. China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China |
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| Abstract: | The wave equation depth migration methods are the key technologies for complex structure imaging,velocity modeling based on wave equation provides more accurate velocity model.Waveform inversion in frequency domain is one of the most widely studied methods for the wave equation velocity modeling,it promotes the application of waveform inversion in exploration.In this paper,we will analyze some frequency-related factors in waveform inversion that ensure the effectiveness.We introduce an implementation of multi-scale inversion that is widely used in the time domain inversion,analyze the relationship between the choice of frequency point of data,wavelet spectrum band width and the inversion result.we test these methods and factors with a designed mountain model,the conclusion provides a basis and reference for the effective frequency domain waveform inversion in seismic exploration. |
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| Keywords: | Frequency domain waveform inversion Multi-scale Spectrum width Wavelet |
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