EMD-seislet transform

EMD-seislet transform
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DOI:
10.1190/geo2017-0554.1
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发表时间:
2015-12
期刊:
影响因子:
3.3
通讯作者:
Yangkang Chen;Sergey Fomel
Yangkang Chen;Sergey Fomel
中科院分区:
地球科学2区
文献类型:
--
作者:
Yangkang Chen;Sergey Fomel

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摘要地震波变换使用一个预测算子,该算子与地震事件的局部斜率或频率有关。我们将一维非平稳地震波变换与f-x域的经验模态分解(EMD)相结合。我们使用EMD将数据分解成平滑可变的频率分量,以进行以下的一维地震波变换。由此产生的表示显示出显着的稀疏性。我们开发了一个详细的算法,并使用一个现场的例子来演示新的地震波变换稀疏促进地震数据处理的应用。
ABSTRACTThe seislet transform uses a prediction operator that is connected to the local slope or frequency of seismic events. We have combined the 1D nonstationary seislet transform with empirical-mode decomposition (EMD) in the f-x domain. We used EMD to decompose data into smoothly variable frequency components for the following 1D seislet transform. The resultant representation showed remarkable sparsity. We developed a detailed algorithm and used a field example to demonstrate the application of the new seislet transform for sparsity-promoting seismic data processing.