抑制地面滚动的自监督方案

IF 1.8 3区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
Sixiu Liu, Claire Birnie, Andrey Bakulin, Ali Dawood, Ilya Silvestrov, Tariq Alkhalifah
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引用次数: 0

摘要

近年来,自监督程序推动了地震噪声衰减领域的发展,因为在训练阶段不需要大量干净的标记数据,而这是地震数据无法达到的要求。然而,目前的自监督方法通常抑制的是简单的噪声类型,如随机噪声和轨迹噪声,而不是复杂的混叠地滚噪声。在此,我们提出了一种自监督程序的改良方法,即盲扇网络,用于消除地震震源采集中的地滚异音,而无需任何干净数据。自我监督去噪程序是通过设计一个具有预定方向的噪声掩码来实现的,以避免网络在预测一个像素值时学习到的地滚的一致性。在合成和野外地震数据上进行的数值实验证明,我们的方法能有效地减弱混叠地滚。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A self-supervised scheme for ground roll suppression

A self-supervised scheme for ground roll suppression

In recent years, self-supervised procedures have advanced the field of seismic noise attenuation, due to not requiring a massive amount of clean labelled data in the training stage, an unobtainable requirement for seismic data. However, current self-supervised methods usually suppress simple noise types, such as random and trace-wise noise, instead of the complicated, aliased ground roll. Here, we propose an adaptation of a self-supervised procedure, namely, blind-fan networks, to remove aliased ground roll within seismic shot gathers without any requirement for clean data. The self-supervised denoising procedure is implemented by designing a noise mask with a predefined direction to avoid the coherency of the ground roll being learned by the network while predicting one pixel's value. Numerical experiments on synthetic and field seismic data demonstrate that our method can effectively attenuate aliased ground roll.

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来源期刊
Geophysical Prospecting
Geophysical Prospecting 地学-地球化学与地球物理
CiteScore
4.90
自引率
11.50%
发文量
118
审稿时长
4.5 months
期刊介绍: Geophysical Prospecting publishes the best in primary research on the science of geophysics as it applies to the exploration, evaluation and extraction of earth resources. Drawing heavily on contributions from researchers in the oil and mineral exploration industries, the journal has a very practical slant. Although the journal provides a valuable forum for communication among workers in these fields, it is also ideally suited to researchers in academic geophysics.
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