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arXiv 2104.08155physics.geo-ph
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加权矩阵分解陆地地震波场恢复的实用流程

A practical workflow for land seismic wavefield recovery with weighted matrix factorization

Yijun Zhang, Felix J. Herrmann

摘要:

虽然通过加权低秩矩阵分解的波场重建已被证明在海洋数据上表现良好,但将该技术开箱即用地应用于陆地数据会受到地滚的阻碍。这些强表面波的存在往往以较弱的体波为代价来主导重建。由于地滚是缓慢的,它也遭受更多的混淆。为了克服这些挑战,我们引入了一个实用的工作流程,其中地滚波和体波分量分别恢复和组合。我们测试所提出的方法盲目的3D SEAM巴雷特数据集的一个子集。通过我们的技术,我们从25%的随机子采样接收器中恢复密集采样的数据。对Single Shot的独立比较证明了所提出的工作流程可实现的显著改进。

英文摘要:

While wavefield reconstruction through weighted low-rank matrix factorizations has been shown to perform well on marine data, out-of-the-box application of this technology to land data is hampered by ground roll. The presence of these strong surface waves tends to dominate the reconstruction at the expense of the weaker body waves. Because ground roll is slow, it also suffers more from aliasing. To overcome these challenges, we introduce a practical workflow where the ground roll and body wave components are recovered separately and combined. We test the proposed approach blindly on a subset of the 3D SEAM Barrett dataset. With our technique, we recover densely sampled data from 25 percent randomly subsampled receivers. Independent comparisons on a single shot demonstrate significant improvements achievable with the presented workflow.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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