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  1. No Access

    Article

    Low-rank Representation for Seismic Reflectivity and its Applications in Least-squares Imaging

    Sparse representation and inversion have been widely used in the acquisition and processing of geophysical data. In particular, the low-rank representation of seismic signals shows that they can be determined ...

    Jidong Yang, Jian** Huang, Hao Zhang, Jiaxing Sun, Hejun Zhu… in Surveys in Geophysics (2024)

  2. No Access

    Article

    High-Temporal-Accuracy Viscoacoustic Wave Propagation Based on k-Space Compensation and the Fractional Zener Model

    The acoustic behavior in fluid attenuating media can be effectively simulated using a fractional Zener model (FZM). Because of the fractional time derivatives of both stress and strain in the constitutive rela...

    Yabing Zhang, Tongjun Chen, Yang Liu, Hejun Zhu in Surveys in Geophysics (2023)

  3. Article

    Correction to: Mitigating Velocity Errors in Least-Squares Imaging Using Angle-Dependent Forward and Adjoint Gaussian Beam Operators

    Jidong Yang, Jian** Huang, Zhenchun Li, Hejun Zhu… in Surveys in Geophysics (2022)

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    Article

    Geometry-preserving full-waveform tomography and its application in the Longmen Shan area

    Classic L2-norm-based waveform tomography is often plagued by insurmountable cycle skip** problems; as a result, the iterative inversion falls into local minima, yielding erroneous images. According to the o...

    **ngpeng Dong, Dinghui Yang, Hejun Zhu, Yun Chen in Science China Earth Sciences (2022)

  5. No Access

    Article

    Mitigating Velocity Errors in Least-Squares Imaging Using Angle-Dependent Forward and Adjoint Gaussian Beam Operators

    Compared with traditional adjoint-based migration, least-squares migration (LSM) can reduce finite-frequency effects, remove acquisition footprints and improve spatial resolution by solving a linear inverse pr...

    Jidong Yang, Jian** Huang, Zhenchun Li, Hejun Zhu… in Surveys in Geophysics (2021)

  6. No Access

    Article

    Elastic Least-Squares Imaging in Tilted Transversely Isotropic Media for Multicomponent Land and Pressure Marine Data

    Traditional elastic reverse-time migration (RTM) involves P-/S-wave separation for the source and receiver wavefields, followed by applying the zero-lag cross-correlation imaging condition to produce PP and PS...

    Jidong Yang, Biaolong Hua, Paul Williamson, Hejun Zhu… in Surveys in Geophysics (2020)

  7. No Access

    Article

    Structure of the European upper mantle revealed by adjoint tomography

    The structure of the European crust and upper mantle is precisely known only in limited regions. A new tomographic model for the entire European upper mantle identifies northeastward subduction of the Adria pl...

    Hejun Zhu, Ebru Bozdağ, Daniel Peter, Jeroen Tromp in Nature Geoscience (2012)