| 应用同步挤压小波变换去除面波 |
| |
| 引用本文： | 刘晗,张建中,黄忠来. 应用同步挤压小波变换去除面波[J]. 石油地球物理勘探, 2016, 51(1): 71-79. DOI: 10.13810/j.cnki.issn.1000-7210.2016.01.010 |
| |
| 作者姓名： | 刘晗 张建中 黄忠来 |
| |
| 作者单位： | 中国海洋大学海洋地球科学学院, 海底科学与探测技术教育部重点实验室, 山东青岛 266100 |
| |
| 基金项目： | 本项研究受国家自然科学基金项目(41074077,41230318)和高等学校博士学科点专项科研基金资助课题(20130132110023)资助。 |
| |
| 摘 要： | 同步挤压小波变换(SWT)是一种新的连续可逆时频分析方法,具有较高的时间和频率分辨率,利用该变换可去除地震资料中的面波。将时间域地震记录变换到时频域,在时频域准确识别面波区域并切除,再将切除面波后时频域信号反变换到时间域,就得到去除了面波的地震记录。理论模型合成数据和实测资料的处理结果表明:该变换可以有效去除面波而不损失有效反射波,且效果优于连续小波变换、S变换和f-k滤波等方法。
|
| 关 键 词： | 同步挤压小波变换 时频分析 消除面波 |
| 收稿时间： | 2014-09-30 |
Surface wave removal with synchrosqueezing wavelet transform |
| |
| Liu Han,Zhang Jianzhong,Huang Zhonglai. Surface wave removal with synchrosqueezing wavelet transform[J]. Oil Geophysical Prospecting, 2016, 51(1): 71-79. DOI: 10.13810/j.cnki.issn.1000-7210.2016.01.010 |
| |
| Authors: | Liu Han Zhang Jianzhong Huang Zhonglai |
| |
| Affiliation: | College of Marine Geosciences, Ocean University of China, Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao, Shandong 266100, China |
| |
| Abstract: | Synchrosqueezing wavelet transform (SWT) is a new method for continuous and invertible time-frequency analysis with high temporal and spatial resolution. In this paper, we apply the SWT to remove surface waves from seismic data. First seismic data in the time domain are transformed into that in the time-frequency domain with the SWT. Then surface waves are separated from reflection waves in the time-frequency domain. After surface wave removal, reflection waves in the time-frequency domain are transformed back into that in the time domain, and seismic data without surface waves are finally obtained. Tests on theoretical model and real data shows that the proposed approach can remove surface waves from seismic data without losing signals, and that it seem better than continuous wavelet transform, S transform, and f-k filter. |
| |
| Keywords: | synchrosqueezing wavelet transform (SWT) time-frequency analysis surface wave removal |
|
| 点击此处可从《石油地球物理勘探》浏览原始摘要信息 |
|
点击此处可从《石油地球物理勘探》下载全文 |
|
