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Liu Xu

DR. Liu Xu

Research Scientist III

CIPR

liu.xu@kfupm.edu.sa
65 publications
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A volumetric model of loess based on microstructure instability and generalized suction theories

Yantu Lixue/Rock and Soil Mechanics

XU, Liu, Liu X

Calculation for volumetric strain of collapsible loess considering microstructure instability

Yantu Lixue Rock and Soil Mechanics · 2005-07-01

XU, Liu, Chen LZ, Wang LM, Wang J

Scattering of plane transverse waves by spherical inclusions in a poroelastic medium

Geophysical Journal International · 2009-03-05

XU, Liu, Greenhalgh S, Zhou B

DOI: 10.1111/j.1365-246X.2008.04026.x

Transient solution for poro-viscoacoustic wave propagation in double porosity media and its limitations

Geophysical Journal International · 2009-07-16

XU, Liu, Greenhalgh S, Zhou B

DOI: 10.1111/j.1365-246X.2009.04144.x

Transient solution for viscoacoustic wave propagation in a double porosity medium, and its limitations

ASEG Extended Abstracts · 2009-12-01

XU, Liu, Greenhalgh S, Zhou B

DOI: 10.1071/aseg2009ab008

Approximating the wave moduli of double porosity media at low frequencies by a single Zener or Kelvin-Voigt element

Geophysical Journal International · 2010-04-01

XU, Liu, Greenhalgh S, Zhou B

DOI: 10.1111/j.1365-246X.2009.04494.x

2.5-D poroelastic wave modelling in double porosity media

Geophysical Journal International · 2011-09-01

XU, Liu, Greenhalgh S, Wang Y

DOI: 10.1111/j.1365-246X.2011.05106.x

Velocity and attenuation dispersion relations for the effective Biot model: Total-field formulation

Near Surface Geophysics · 2012-01-01

Greenhalgh S, XU, Liu, Zhou B

DOI: 10.3997/1873-0604.2011050

Structure-coupled joint inversion for magnetotelluric, seismic refraction and reflection traveltime data

ASEG Extended Abstracts · 2013-12-01

XU, Liu, Heinson G, Zhou B

DOI: 10.1071/aseg2013ab027

A model for determination of effective permeability from acoustic wavespeed and attenuation in a rigid two-phase porous medium

NEAR SURFACE GEOPHYSICS · 2014-06-01

Greenhalgh S, XU, Liu, Zhou B

DOI: 10.3997/1873-0604.2013061

Reflection and Transmission Coefficients for an Incident Plane Shear Wave at an Interface Separating Two Dissimilar Poroelastic Solids

Pure and Applied Geophysics · 2014-09-01

XU, Liu, Greenhalgh S

DOI: 10.1007/s00024-014-0844-5

Generalized poroviscoelastic model based on effective biot theory and its application to borehole guided wave analysis

Geophysical Journal International · 2016-12-01

XU, Liu, Greenhalgh S, Zhou B, Heinson G

DOI: 10.1093/gji/ggw345

Effective Biot theory and its generalization to poroviscoelastic models

Geophysical Journal International · 2018-02-01

XU, Liu, Greenhalgh S, Zhou B, Greenhalgh M

DOI: 10.1093/gji/ggx460

Frequency-domain seismic wave modelling in heterogeneous porous media using the mixed-grid finite-difference method

Geophysical Journal International · 2019-01-01

XU, Liu, Greenhalgh S, Zhou B, Greenhalgh M

DOI: 10.1093/gji/ggy410

Frequency-domain FD modeling with an adaptable nearly perfectly matched layer boundary condition for poroviscoelastic waves upscaled from the effective Biot theory

Geophysics · 2019-07-01

XU, Liu, Greenhalgh S

DOI: 10.1190/geo2018-0372.1

Fitting viscoelastic mechanical models to seismic attenuation and velocity dispersion observations and applications to full waveform modelling

Geophysical Journal International · 2019-08-30

XU, Liu, Greenhalgh S

DOI: 10.1093/gji/ggz395

Generalized stiffness reduction method to remove the artificial edge-effects for seismic wave modelling in elastic anisotropic media

Geophysical Journal International · 2020-02-01

Zhou B, Won M, Greenhalgh S, XU, Liu

DOI: 10.1093/gji/ggz529

Explicit Q expressions for inhomogeneous P- and SV-waves in isotropic viscoelastic media

Journal of Geophysics and Engineering · 2020-02-10

XU, Liu, Greenhalgh S, Zhou B, LI, Huijian

DOI: 10.1093/jge/gxz106

Seismic Q of inhomogeneous plane waves in porous media

Geophysics · 2020-05-01

XU, Liu, Greenhalgh S, Carcione JM

DOI: 10.1190/geo2019-0665.1

Q values and wave inhomogeneity parameters of reflected inhomogeneous P and S waves at the free surface of an effective Biot solid

Geophysical Journal International · 2020-05-13

XU, Liu, Greenhalgh S, Zhou B, Ren Z, LI, Huijian

DOI: 10.1093/gji/ggaa212

A robust Q estimation scheme for adaptively handling asymmetric wavelet spectrum variations in strongly attenuating media

Geophysics · 2020-07-01

LI, Huijian, Greenhalgh S, Chen S, XU, Liu, Liu B

DOI: 10.1190/geo2019-0442.1

Quality Factor of Inhomogeneous Plane Waves

Acoustical Physics · 2020-11-01

José MC, XU, Liu, Greenhalgh S, Botelho MAB, Ba J

DOI: 10.1134/S1063771020060111

Wave Properties of Gas-Hydrate Bearing Sediments Based on Poroelasticity

Frontiers in Earth Science · 2021-04-29

Wang W, Ba J, Carcione JM, XU, Liu, Zhang L

DOI: 10.3389/feart.2021.640424

Deep learning audio magnetotellurics inversion using residual-based deep convolution neural network

Journal of Applied Geophysics · 2021-05-01

Liu Z, Chen H, Ren Z, Tang J, Xu Z, Chen Y, XU, Liu

DOI: 10.1016/j.jappgeo.2021.104309

Reflection and transmission of plane waves at an interface separating two poro-viscoelastic materials with continuity and elastic consistence

Geophysical Journal International · 2021-05-01

XU, Liu, LI, Huijian, AL-SHUHAIL, Abdullatif, Liu B, Ren Z

DOI: 10.1093/gji/ggab009

Homotopy solutions of the acoustic eikonal equation for strongly attenuating transversely isotropic media with a vertical symmetry axis

Geophysics · 2021-07-19

Huang X, Greenhalgh S, Long Y, Lin J, XU, Liu

Continuous and elastically consistent viscoelastic reflection and transmission coefficient curves for plane inhomogeneous P and S waves

Geophysical Journal International · 2021-09-01

XU, Liu

DOI: 10.1093/gji/ggab200

Two-dimensional magnetotelluric finite element modeling by a hybrid Helmholtz-curl formulae system

Journal of Computational Physics · 2021-10-15

Yao H, Ren Z, Chen H, Tang J, Li Y, XU, Liu

DOI: 10.1016/j.jcp.2021.110533

A Generalized Seismic Attenuation Compensation Operator Optimized by 2-D Mathematical Morphology Filtering

IEEE Transactions on Geoscience and Remote Sensing · 2022-01-01

LI, Huijian, Greenhalgh S, Liu B, XU, Liu, Hao Q, Chen Y

DOI: 10.1109/TGRS.2022.3186595

Sidelobe Suppression for Likelihood Ratio-Based Seismic Deconvolution

IEEE Transactions on Geoscience and Remote Sensing · 2022-01-01

Liu B, Mohandes M, LI, Huijian, XU, Liu, Al-Shaikhi A, Zhao L

DOI: 10.1109/TGRS.2021.3112339

Bandwidth-insensitive extended centroid frequency-shift method for near-surface Q estimation

Geophysics · 2022-03-01

LI, Huijian, XU, Liu, Liu B, Greenhalgh S, AL-SHUHAIL, Abdullatif, Chen Y

DOI: 10.1190/geo2021-0110.1

Generalized Effective Biot Theory and Seismic Wave Propagation in Anisotropic, Poroviscoelastic Media

Journal of Geophysical Research Solid Earth · 2022-03-01

Huang X, Greenhalgh S, Han L, XU, Liu

DOI: 10.1029/2021JB023590

Inhomogeneous wave reflection from the surface of a partially saturated thermoelastic porous media

International Journal of Numerical Methods for Heat and Fluid Flow · 2022-05-16

Kumar M, XU, Liu, Kalkal KK, Dalal V, Kumari M

DOI: 10.1108/HFF-04-2021-0279

Statistical prediction of waterflooding performance by K-means clustering and empirical modeling

Petroleum Science · 2022-06-01

Liao QZ, Xue L, Lei G, XU, Liu, Sun SY, PATIL, Shirish

DOI: 10.1016/j.petsci.2021.12.032

Reflection and transmission coefficients of spherical waves at an interface separating two dissimilar viscoelastic solids

Geophysical Journal International · 2022-07-01

XU, Liu, Greenhalgh S, Kumar M, LI, Huijian, Liu B, Liao Q, Huang X

DOI: 10.1093/gji/ggac071

Deep Learning Optimized Dictionary Learning and Its Application in Eliminating Strong Magnetotelluric Noise

Minerals · 2022-08-12

Li G, Gu X, Ren Z, Wu Q, XU, Liu, Zhang L, Xiao D, Zhou C

DOI: 10.3390/min12081012

Wave propagation at the welded interface of an elastic solid and unsaturated poro-thermoelastic solid

International Journal of Numerical Methods for Heat and Fluid Flow · 2022-10-14

Kumar M, XU, Liu, Kumari M, Yadav P

DOI: 10.1108/HFF-01-2022-0008

Likelihood-Ratio-Based Recovery for Seismic Reflectivity Series

IEEE Transactions on Industrial Electronics · 2022-11-01

Liu B, Mohandes M, LI, Huijian, Al-Shaikhi A, XU, Liu, Zhao L

DOI: 10.1109/TIE.2021.3116592

2.5-D Time-Domain Seismic Wavefield Modeling in Heterogeneous Viscoelastic and Tilted Transversely Isotropic Media (2023)

IEEE Transactions on Geoscience and Remote Sensing · 2023-01-01

Won M, Zhou B, XU, Liu, Zemerly MJ, Al-Khaleel M, Riahi MK

DOI: 10.1109/TGRS.2023.3333544

Frequency-Independent Centroid Frequency Shift Method for Signal Attenuation Estimation

IEEE Transactions on Geoscience and Remote Sensing · 2023-01-01

LI, Huijian, Liu B, XU, Liu, AL-SHUHAIL, Abdullatif, HANAFY, Sherif, Chen Y

DOI: 10.1109/TGRS.2023.3293645

Incorporating the Nearly Constant Q Models into 3-D Poro-Viscoelastic Anisotropic Wave Modeling

IEEE Transactions on Geoscience and Remote Sensing · 2023-01-01

Han L, Huang X, Hao Q, Greenhalgh S, XU, Liu

DOI: 10.1109/TGRS.2023.3267519

Integration of a Gaussian quadrature grid discretization approach with a generalized stiffness reduction method and a parallelized direct solver for 3-D frequency-domain seismic wave modelling in viscoelastic anisotropic media

Geophysical Journal International · 2023-05-01

Ma G, Zhou B, Greenhalgh S, XU, Liu, Zemerly J, Riahi MK

DOI: 10.1093/gji/ggac503

Rayleigh waves in nonlocal generalized thermoelastic media

International Journal of Numerical Methods for Heat and Fluid Flow · 2023-05-04

Kumar M, Kaswan P, Sarkar N, XU, Liu, Kumari M

DOI: 10.1108/HFF-08-2022-0468

Inhomogeneous waves propagation in double-porosity thermoelastic media

International Journal of Numerical Methods for Heat and Fluid Flow · 2023-06-22

Kumar M, Bhagwan J, Kaswan P, XU, Liu, Kumari M

DOI: 10.1108/HFF-03-2023-0146

IncepTCN: A new deep temporal convolutional network combined with dictionary learning for strong cultural noise elimination of controlled-source electromagnetic data

Geophysics · 2023-07-01

Li G, Wu S, Cai H, He Z, XU, Liu, Zhou C, Tang J

DOI: 10.1190/geo2022-0317.1

Permeability Prediction of Nanoscale Porous Materials Using Discrete Cosine Transform-Based Artificial Neural Networks

Materials · 2023-07-01

Li D, You S, Liao Q, Lei G, XU, Liu, CHEN, Weiqing, LI, Huijian, Liu B, Guo X

DOI: 10.3390/ma16134668

An efficient analytical approach for steady-state upscaling of relative permeability and capillary pressure

Energy · 2023-11-01

Liao Q, Li G, Tian S, Song X, Lei G, XU, Liu, CHEN, Weiqing, PATIL, Shirish

DOI: 10.1016/j.energy.2023.128426

Self-organizing Competitive Neural Network Based Adaptive Sparse Representation for Magnetotelluric Data Denoising

Journal of Physics Conference Series · 2023-12-01

XU, Liu, Li G, Li J, Zhou X, Gu X, Zhou C, Gong M

DOI: 10.1088/1742-6596/2651/1/012129

Novel methods to determine the slowness and ray-velocity vectors in viscoelastic anisotropic media

Geophysical Journal International · 2024-02-01

Zhou B, XU, Liu, Wang P, Kumar M

DOI: 10.1093/gji/ggad467

Finite-difference frequency-domain method with QR-decomposition-based complex-valued adaptive coefficients for 3D diffusive viscous wave modelling

Journal of Geophysics and Engineering · 2024-04-01

Xu W, Ba J, Wang S, Zhao H, Wu C, Cao J, XU, Liu

DOI: 10.1093/jge/gxae026

Super-resolution reconstruction of 3D digital rocks by deep neural networks

Geoenergy Science and Engineering · 2024-06-01

You S, Liao Q, Yan Z, Li G, Tian S, Song X, Wang H, Xue L, Lei G, XU, Liu, PATIL, Shirish

DOI: 10.1016/j.geoen.2024.212781

On cost-efficient parallel iterative solvers for 3D frequency-domain seismic multisource viscoelastic anisotropic wave modeling

Geophysics · 2024-07-01

Ma G, Zhou B, Riahi MK, Zemerly J, XU, Liu

DOI: 10.1190/geo2023-0368.1

Parallelizable Permeability Estimation of Digital Porous Media for Sandstone Using Subvolume Properties for Flow in Porous Media

Journal of Energy Engineering · 2024-10-01

Liao Q, Wei Z, Yan Z, You S, Cui M, XU, Liu, LI, Huijian, Saleh Aljawad M, PATIL, Shirish, Zhang Y, Zhang Z, Zeng C, Guo X

DOI: 10.1061/JLEED9.EYENG-5390

The characteristics and mechanism of earthquake disasters on permafrost sites induced by the west of Kunlun Mountaion Pass 8.1 earthquake in 2001

Cold Regions Science and Technology · 2024-10-01

Wang L, Xu S, XU, Liu, Wu Z, Chen Y, Wang W

DOI: 10.1016/j.coldregions.2024.104267

On the computation of ray-velocity vectors for seismic body waves in viscoelastic anisotropic media

Geophysics · 2024-11-01

Zhou B, Darwis MF, Li X, Greenhalgh S, XU, Liu

DOI: 10.1190/GEO2023-0715.1

Explicit Fréchet Derivatives for 3-D Frequency-Domain Seismic Full-Waveform Inversion in Viscoelastic Tilted Transversely Isotropic Media and Fully Parallel Implementations

IEEE Transactions on Geoscience and Remote Sensing · 2025-01-01

Ma G, Zhou B, Al Suwaidi A, Kamel Riahi M, Jamal Zemerly M, XU, Liu

DOI: 10.1109/TGRS.2025.3553855

Ray and energy-flux velocities at a contact of two viscoelastic anisotropic materials

Geophysical Journal International · 2025-01-01

XU, Liu, Zhou B, AL-SHUHAIL, Abdullatif, ZHOU, Wei, Liu B, Liao Q

DOI: 10.1093/gji/ggae363

Numerical simulations of time-domain seismic wave propagation for a point source in 2-D onshore and offshore geological models

Computers and Geosciences · 2025-02-01

Won M, Zhou B, Zemerly MJ, Al-Khaleel M, Riahi MK, XU, Liu

DOI: 10.1016/j.cageo.2024.105846

An accurate and efficient numerical method for 2.5D time-domain viscoacoutic and viscoelastic wave modeling

Geophysics · 2025-05-01

Won M, Zhou B, XU, Liu, Zemerly MJ, Al-Khaleel M, Riahi MK

DOI: 10.1190/GEO2023-0324.1

Joint full-waveform inversion for time-lapse 4D seismic monitoring

Geophysics · 2025-05-01

ZHOU, Wei, Lumley D, XU, Liu

DOI: 10.1190/geo2024-0193.1

Distributed Fiber Optic Sensing for Fracture Geometry Inversion Using All Time Steps Data

Sensors · 2025-07-01

You S, Feng G, Qian X, Liao Q, Yan Z, Sun S, XU, Liu, PATIL, Shirish

DOI: 10.3390/s25144290

Real ray tracing in viscoelastic anisotropic media with homogeneous ray and energy velocities

Geophysics · 2025-07-01

XU, Liu

DOI: 10.1190/geo2024-0706.1

Underground Hydrogen Storage in Salt Cavern: A Review of Advantages, Challenges, and Prospects

Sustainability Switzerland · 2025-07-01

Qian X, You S, Wang R, Yue Y, Liao Q, Dai J, Tian S, XU, Liu

DOI: 10.3390/su17135900

Pore-Scale Simulation for Fluid Flow in Digital Rocks Based on Decoupled Stokes Equation

SPE Journal · 2025-09-01

You S, Liao Q, Ling F, Lei G, Li G, Tian S, Sheng M, Wang T, Xue L, XU, Liu, PATIL, Shirish, Zhuang X

DOI: 10.2118/228412-PA

Continuous reflection and transmission coefficient curves and ray tracing at an interface of viscoelastic anisotropic media based on complex Snell's law

Geophysics · 2025-11-01

Wang P, ZHOU, Wei, XU, Liu

DOI: 10.1190/geo2024-0816.1