Abstract Source time‐reversal imaging based on wave equation theory can achieve high‐precision source location in complex geological models. For the time‐reversal imaging method, the imaging condition is critical to the location accuracy and imaging resolution. The most commonly used imaging condition in time‐reversal imaging is the scalar cross correlation imaging condition. However, scalar cross‐correlation imaging condition removes the directional information of the wavefield through modulus operations to avoid the direct dot product of mutually orthogonal P‐ and S‐waves, preventing the imaging condition from leveraging the wavefield propagation direction to suppress imaging artefacts. We previously tackled this issue by substituting the imaging wavefield with the energy current density vectors of the decoupled wavefield, albeit at the cost of increased computational and storage demands. To balance artifact suppression with reduced computational and memory overhead, this work introduces the Poynting and polarization vectors mixed imaging condition. Poynting and polarization vectors mixed imaging condition utilizes the polarization and propagation direction information of the wavefield by directly dot multiplying the undecoupled velocity polarization vector with the Poynting vector, eliminating the need for P‐ and S‐wave decoupling or additional memory. Compared with scalar cross‐correlation imaging condition, this imaging condition can accurately image data with lower signal‐to‐noise ratios. Its performance is generally consistent with previous work but offers higher computational efficiency and lower memory usage. Synthetic data tests on the half‐space model and the three‐dimensional Marmousi model demonstrate the effectiveness of this method in suppressing imaging artefacts, as well as its efficiency and ease of implementation.

Nan Hu

Hao Li

Yunsheng Zhao

Yongming Lu

Tao Lei

Mei He

Xingda Jiang

Wei Zhang

Geophysical Prospecting

《地球物理勘探》出版了关于地球物理科学的最佳初级研究，因为它适用于地球资源的勘探、评估和开采。该杂志大量借鉴了石油和矿产勘探行业研究人员的贡献，具有非常实用的倾向。尽管该杂志为这些领域的工作人员之间的交流提供了一个有价值的论坛，但它也非常适合学术地球物理学的研究人员。

The journal 'Geophysical Prospecting' publishes high-quality research in the field of geophysical sciences, particularly relevant to the exploration, assessment, and extraction of earth resources. It draws extensively on contributions from researchers in the oil and mineral exploration industries, emphasizing practical applications. While it serves as a valuable forum for communication among professionals in these fields, it is also well-suited for researchers in academic geophysics.

《Geophysical Prospecting》杂志发表关于地球物理科学的高质量研究，特别适用于地球资源的勘探、评估和开采。该杂志广泛吸纳了石油和矿产勘探领域研究人员的贡献，具有很强的实用性。虽然它为这些领域的专业人士提供了一个宝贵的交流平台，但同样也适合学术地球物理学的研究者。

Category	Quartile
地球科学	3
地球科学, 地球化学与地球物理	3

Poynting and polarization vectors mixed imaging condition of source time‐reversal imaging

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Journal Info

Category	Quartile
GEOCHEMISTRY & GEOPHYSICS	3