| 基于广义S变换的地震波能量衰减分析 |
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| 引用本文： | 刘喜武,年静波,刘洪.基于广义S变换的地震波能量衰减分析[J].勘探地球物理进展,2006,29(1):20-24. |
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| 作者姓名： | 刘喜武 年静波 刘洪 |
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| 作者单位： | 1. 中国海洋大学海洋地球科学学院,山东,青岛,266003
2. 中国科学院地质与地球物理研究所,北京,100029 |
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| 基金项目： | 中国科学院知识创新重大项目“环渤海(湾)地区前新生代海相油气资源研究”(KZCX1-SW-18)资助 |
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| 摘 要： | 通过S变换、广义S变换、短时Fourier变换和连续小波变换等地震信号时频分析方法的比较，阐明广义S变换的高分辨率性质，模型数据试算表明算法的正确和有效性。给出基于广义S变换的波场能量——频率估算技术，提取瞬时等效吸收系数。二维实际地震数据试算表明，方法可行，可用于油气检测的研究。
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| 关 键 词： | 广义S变换 |
| 文章编号： | 1671-8585（2006）01-0020-05 |
| 收稿时间： | 2005-07-26 |
| 修稿时间： | 2005年7月26日 |
Generalized S-transform based seismic attenuation analysis |
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| Liu Xiwu,Nian Jingbo,Liu Hong.Generalized S-transform based seismic attenuation analysis[J].Progress in Exploration Geophysics,2006,29(1):20-24. |
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| Authors: | Liu Xiwu Nian Jingbo Liu Hong |
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| Affiliation: | School of Marine Geo science, Ocean University of China, Qingdao 266003, China |
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| Abstract: | Time-frequency analysis of seismic signal was implemented with short-time Fourier transform (STFT), continuous-wavelet transform (CWT), and generalized S-transform (GST). The correctness and effectiveness of the algorithms were verified on model data. Comparison between STFT, CWT, and GST reveals that GST is superior in resolution. Based on the results, GST was adopted in extraction of instantaneous absorption coefficients. Satisfactory results have been achieved by applying the method to real 2-D seismic data |
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| Keywords: | generalized S-transform attenuation absorption coefficient oil and gas detection |
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