| 基于LIFT思想的噪声压制技术在南极海域地震资料中的应用 |
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| 引用本文：陈玺,文鹏飞,付少英,何高文.2018.基于LIFT思想的噪声压制技术在南极海域地震资料中的应用[J].地球学报,39(6):667-672. |
| DOI：10.3975/cagsb.2018.091703 |
| 摘要点击次数: 1626 |
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| 基金项目:自然资源部国家专项(编号: DD20160214);中国地质调查局海洋地质调查计划项目(编号: GZH201100303) |
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| 中文摘要:在中国第33次南极科学考察中, 自然资源部中国地质调查局下属的广州海洋地质调查局“海洋六号”船于2016年12月到2017年2月在南极半岛南设得兰海沟海域获得了1 400多km的高分辨率多道地震资料。资料存在的主要噪声为异常高能量干扰和多次波干扰, 为了高保真的压制噪声, 在最大限度地保护有效信号的前提下充分地压制噪声, 设计了基于LIFT(Linear Interference Filter Technique)思想的噪声压制方法。利用这套方法分别针对异常高能量干扰和多次波干扰进行了压制, 压制结果显示, 噪声得到了很好的压制, 有效信号得到了很好的保护, 达到了高保真去噪的目的。 |
| 中文关键词:南极 多道地震 异常高能量干扰 多次波 LIFT |
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| The Application of Noise Suppression Technology to Seismic Data of Antarctic Sea Area Based on LIFT |
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| Abstract:During China’s 33rd Antarctic Expedition, the vessel “Hai Yang Liu Hao” of Guangzhou Marine Geological Survey, which is subordinated to China Geological Survey of Ministry of Natural Resources, obtained more than 1 400 km of high resolution multichannel seismic data in the South Shetland Trench area of the Antarctic Peninsula, from December 2016 to February 2017. The main noises in the seismic data were abnormal high-energy noise and multiples. In order to suppress noises with high fidelity and fully suppress noises under the premise of maximizing the protection of effective signals, the authors designed a noise suppression method based on LIFT (Linear Interference Filter Technology). This method was used to suppress the abnormal high-energy noise and multiples respectively. The results show that the noise is well suppressed, the effective signal is well protected, and the purpose of high-fidelity denoising is achieved. |
| keywords:Antarctica multichannel seismic abnormal high-energy noise multiples LIFT |
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