Evaluation of factors influencing full wave equation depth migration

IF 2.2 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Applied Geophysics Pub Date : 2025-02-19 DOI:10.1016/j.jappgeo.2025.105660

Anyu Li , Yueming Ye , Xiangyu Zhu , Tao Liu , Huimin Zhang , Yong Xia

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引用次数: 0

Abstract

Seismic imaging techniques are essential to geophysical exploration and subsurface characterization, with full wave-equation depth migration (FWDM) emerging as a highly effective method for imaging complex geological structures. However, optimizing FWDM requires a deep understanding of the factors influencing its performance to achieve accurate and detailed subsurface images. To address this need, this study presents a systematic approach to refining FWDM by first providing a comprehensive review of the extrapolation equations and imaging mechanisms that form its foundation. We then introduce a series of numerical tests designed to identify and analyze key factors impacting imaging quality, including migration velocity, wave propagation effect, and numerical stability. Based on these findings, we optimize parameters and apply them to two challenging models, allowing us to assess the improvements in imaging clarity and accuracy. This research not only highlights critical factors affecting FWDM but also demonstrates how targeted optimizations can significantly enhance its effectiveness for advanced subsurface imaging applications.

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全波方程深度偏移影响因素的评价

地震成像技术对于地球物理勘探和地下表征至关重要，全波方程深度偏移（FWDM）是复杂地质构造成像的一种高效方法。然而，优化FWDM需要深入了解影响其性能的因素，以获得准确和详细的地下图像。为了满足这一需求，本研究提出了一种系统的方法来完善FWDM，首先全面回顾了构成FWDM基础的外推方程和成像机制。然后，我们介绍了一系列数值测试，旨在识别和分析影响成像质量的关键因素，包括偏移速度、波传播效应和数值稳定性。基于这些发现，我们优化了参数，并将其应用于两个具有挑战性的模型，使我们能够评估成像清晰度和准确性的改进。这项研究不仅突出了影响FWDM的关键因素，而且还展示了有针对性的优化如何显著提高其在先进地下成像应用中的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Geophysics 地学-地球科学综合

CiteScore

3.60

自引率

10.00%

发文量

274

审稿时长

4 months

期刊介绍： The Journal of Applied Geophysics with its key objective of responding to pertinent and timely needs, places particular emphasis on methodological developments and innovative applications of geophysical techniques for addressing environmental, engineering, and hydrological problems. Related topical research in exploration geophysics and in soil and rock physics is also covered by the Journal of Applied Geophysics.