The following are papers published or in press from 2010 to 2020:

## 2020

Y. Chen and S. Fomel, 2020, **Non-stationary local signal-and-noise orthogonalization**: Geophysics, submitted.

Y. Chen, S. Fomel, H. Wang, and S. Zu, 2020, **5D de-aliased seismic data interpolation using non-stationary prediction error filter**: Geophysics, submitted.

Y. Chen, O. Saad, G. Huang, Y. Chen, A. Savvaidis, S. Fomel, and N, Pham, 2020, **A highly generalized deep learning framework for real-time earthquake detection**: Journal of Geophysical Research - Solid Earth, submitted.

L. Decker and S. Fomel, 2020, **A probabilistic approach to seismic diffraction imaging**: Geophysics, submitted.

B. Engquist, K. Ren and Y. Yang, 2020, **The quadratic Wasserstein metric for inverse data matching**: Inverse Problems, v. 36, 055001.

S. Fomel and H. Kaur, 2020, **Wave-equation time migration**: Geophysics, accepted.

Z. Geng, Z. Zhao, Y. Shi, X. Wu, S. Fomel, and M. Sen, 2020,** Deep learning for velocity model building with common-image gathers**: Geophysical Journal International, submitted.

Z. Geng, X. Wu, S. Fomel, and Y. Chen, 2020, **Relative time seislet transform**: Geophysics, v. 85, V223-V232.

Z. Geng, X. Wu, Y. Shi, and S. Fomel, 2020, **Deep learning for relative geologic time and seismic horizons**: Geophysics, v. 85, WA87-WA100.

H. Kaur, S. Fomel, and N. Pham, 2020, **Seismic ground-roll noise attenuation using deep learning**: Geophysical Prospecting, v. 68, 2064-2077.

H. Kaur, S. Fomel, and N. Pham, 2020, **A fast algorithm for elastic wave-mode separation using deep learning with generative adversarial networks (GANs):** Journal of Geophysical Research - Solid Earth, submitted.

H. Kaur, N. Pham, and S. Fomel, 2020, **Improving resolution of migrated images by approximating the inverse Hessian using deep learning**: Geophysics, v. 85, WA173-WA183.

H. Kaur, N. Pham, and S. Fomel, 2020, **Seismic data interpolation using deep learning with Generative Adversarial Networks**: Geophysical Prospecting, accepted.

H. Kaur, A. Sun, Z. Zhong, and S. Fomel, 2020, **Time-lapse seismic data inversion for estimating reservoir parameters using deep learning**: Interpretation, submitted.

D. Merzlikin, S. Fomel, and X. Wu, 2020, **Least-squares diffraction imaging using shaping regularization by anisotropic smoothing**: Geophysics, v. 85, S313-S325.

N. Pham and S. Fomel, 2020, **Demystifying neural network for channel detection: Uncertainty and Interpretability analysis**: Geophysics, submitted.

N. Pham, X. Wu, and E. Naeini, 2020, **Missing well log prediction using convolutional long short-term memory network**: Geophysics, v. 85, WA159-WA171.

Y. Shi, X. Wu, and S. Fomel, 2020, **Waveform Embedding: automatic horizon picking with unsupervised deep learning**: Geophysics, v. 85, WA67–WA76.

Y. Shi, X. Wu, and S. Fomel, 2020, **Interactively tracking seismic geobodies with a deep learning flood-filling network**: Geophysics, accepted.

Y. Sripanich, S. Fomel, J. Trampert, W. Burnett, and T. Hess, 2020, **Probabilistic moveout analysis by time warping**: Geophysics, v. 85, U1-U20.

X. Wu, Z. Geng, Y. Shi, N. Pham, S. Fomel, and G. Caumon, 2020, **Building realistic structure models to train deep convolutional neural networks for seismic structural interpretation**: Geophysics, v. 85, WA27-WA39.

Q. Xu, B. Engquist, M. Solaimanian, and K. Yan, 2020, **A new nonlinear viscoelastic model and mathematical solution of solids for improving prediction accuracy**: Scientific Reports, v. 10, Article 2202.

S. Zu, H. Cao, S. Fomel, and Y. Chen, 2020, **Robust local slope estimation by deep learning**: Geophysics, submitted.

## 2019

S. Bader, X. Wu, and S. Fomel, 2019, **Missing log data interpolation and semiautomatic seismic well ties using data matching techniques**: Interpretation, v. 7, T347–T361.

B. Engquist and D. Peterseim, 2019, **Computational multiscale methods**: Oberwolfach Reports, v. 16, 2099–2181.

D. Merzlikin, S. Fomel, and M. Sen, 2019, **Least-squares path-summation diffraction imaging using sparsity constraints**: Geophysics, v. 84, S187–S200.

N. Pham, S. Fomel, and D. Dunlap, 2019, **Automatic channel detection using deep learning**: Interpretation, v. 7, SE43-SE50.

Y. Shi, X. Wu, and S. Fomel, 2019, **SaltSeg: Automatic 3D salt segmentation using a deep convolutional neural network**: Interpretation, v. 7, SE113-SE122.

A. Stovas and S. Fomel, 2019, **Generalized velocity approximation**: Geophysics, v. 84, C27-C40.

Y. Sripanich, S. Fomel, A. Stovas, 2019, **Effects of lateral heterogeneity on time-domain processing parameters**: Geophysical Journal International, v. 219, 1181-1201.

C. Wang, Z. Zhu, H. Gu, X. Wu, and S. Liu, 2019, **Hankel low-rank approximation for seismic noise attenuation**: IEEE

Transactions on Geoscience and Remote Sensing, v. 57, 561-573.

X. Wu and Z. Guo, 2019, **Detecting faults and channels while enhancing seismic structural and stratigraphic features:**

Interpretation, v. 7, T155-T166.

X. Wu, L. Liang, Y. Shi, and S. Fomel, 2019, **FaultSeg3D: Using synthetic data sets to train an end-to-end convolutional neural network for 3D seismic fault segmentation**: Geophysics, v. 84, IM35–IM45.

X. Wu, L. Liang, Y. Shi, Z. Geng, and S. Fomel, 2019, **Multitask learning for local seismic image processing: fault detection, structure-oriented smoothing with edge-preserving, and seismic normal estimation by using a single convolutional neural network**: Geophysical Journal International, v. 219, 2097-2109.

X. Wu, Y. Shi, S. Fomel, L. Liang, Q. Zhang, and A. Yusifov, 2019, **FaultNet3D: Predicting fault probabilities, strikes, and dips with a single convolutional neural network**: IEEE Transactions on Geoscience and Remote Sensing, v. 57, 9138-9155.

Z. Xue, H. Zhang, Y. Zhao, and S. Fomel, 2019, **Pattern-guided dip estimation with plane-wave destruction filters**: Geophysical Prospecting, v. 67, 1798-1810.

## 2018

Y. Chen and S. Fomel, 2018, **EMD-seislet transform**: Geophysics, v. 83, A27-A32.

B. Engquist and H. Zhao, 2018, **Approximate separability of the Green's function of the Helmholtz equation in the high frequency limit**: Communications on Pure and Applied Mathematics, v. LXXI, 2220–2274.

S. Greer and S. Fomel, 2018, **Matching and merging high-resolution and legacy seismic images**: Geophysics, v. 83, V115-V122.

Y. Sripanich and S. Fomel, 2018, **Fast time-to-depth conversion and interval velocity estimation with weak lateral variations**: Geophysics, v. 83, S227–S235.

G. Wu, S. Fomel, and Y. Chen, 2018, **Data-driven time-frequency analysis of seismic data using nonstationary Prony method**: Geophysical Prospecting, v. 66, 85-97.

X. Wu and S. Fomel, 2018, **Automatic fault interpretation with optimal surface voting**: Geophysics, Geophysics, v. 83, O67-O82.

X. Wu and S. Fomel, 2018, **Least-squares horizons with local slopes and multi-grid correlations**: Geophysics, v.83, IM29–IM40.

X. Wu, S. Fomel, and M. Hudec, 2018, **Fast salt boundary interpretation with optimal path picking**: Geophysics, v. 83, O45–O53.

X. Wu, Y. Shi, S. Fomel, and F. Li, 2018, **Incremental correlation of multiple well logs following geologically optimal neighbors**: Interpretation, v. 6, T713–T722.

Q. Xu and B Engquist, 2018, **A mathematical model for fitting and predicting relaxation modulus and simulating viscoelastic responses:** Proceedings of the Royal Society A, v. 474, 20170540.

Z. Xue, S. Fomel, and J. Sun, 2018, **Increasing resolution of reverse-time migration using time-shift gathers****:** Geophysical Prospecting, v. 66, 726-735.

Z. Xue, J. Sun, S. Fomel, and T. Zhu, 2018, **Accelerating full-waveform inversion with attenuation compensation**: Geophysics, v. 83, A13-A20.

Z. Xue, X. Wu, and S. Fomel, 2018, **Predictive painting across faults**: Interpretation, v. 6, T449–T455.

Y. Yang and B. Engquist, 2018, **Analysis of optimal transport and related misfit functions in full-waveform inversion**, Geophysics, v. 83, A7-A12.

Y. Yang, B. Engquist, J. Sun, and B. Hamfeldt, 2018, **Application of optimal transport and the quadratic Wasserstein metric to full-waveform inversion**: Geophysics, v. 83, R43-R62.

## 2017

T. Bai, I. Tsvankin, and X. Wu, 2017, **Waveform inversion for attenuation estimation in anisotropic media**: Geophysics, v. 82, WA83-WA93.

H. Chen, H. Zhou, Q. Zhang, and Y. Chen, 2017, **Modeling elastic wave propagation using k-space operator-based temporal high-order staggered-grid finite-difference method**: IEEE Transactions on Geoscience and Remote Sensing, v. 55, 801-815.

L. Decker, D. Merzlikin, and S. Fomel, 2017, **Diffraction imaging and velocity analysis using oriented velocity continuation**: Geophysics, v. 82, U25-U35.

B. Engquist, C. Frederick, Q. Huynh, and H. Zhou, 2017, **Seafloor identification in sonar imagery via simulations of Helmholtz equations and discrete optimization**: Journal of Computational Physics, v. 338, 477–492.

P. Karimi, S. Fomel, and R. Zhang, 2017, **Creating detailed subsurface models using predictive image-guided well-log interpolation**: Interpretation, v. 5, T279-T285.

D. Merzlikin and S. Fomel, 2017, **Analytical path-integral imaging of seismic diffractions**: Geophysics, v. 82, S51-S59.

M. Phillips and S. Fomel, 2017, **Plane-wave Sobel attribute for discontinuity enhancement in seismic images**: Geophysics, v. 82, WB63-WB69.

Y. Sripanich, S. Fomel, A. Stovas, Q. Hao, 2017, **3D generalized nonhyperboloidal moveout approximation**: Geophysics, v. 82, C49-C59.

Y. Sripanich, S. Fomel, J. Sun, and J. Cheng, 2017, **Elastic wave-vector decomposition in heterogeneous anisotropic media**: Geophysical Prospecting, v. 65, 1231–1245.

A. Stovas and S. Fomel, 2017, **The modified generalized moveout approximation, a new parameter selection**: Geophysical Prospecting, v. 65, 687-695.

J. Sun, S. Fomel, Y. Sripanich, and P. Fowler, 2017, **Recursive integral time extrapolation of elastic waves using low-rank symbol approximation**: Geophysical Journal International, v. 211, 1478-1493.

J. Sun and T. Zhu, 2017, **Strategies for stable attenuation compensation in reverse-time migration**: Geophysical Prospecting, v. 66, 498-511.

X. Wu, 2017, **Building 3D subsurface models conforming to seismic structural and stratigraphic features**: Geophysics, v. 82, IM21-IM30.

X. Wu, 2017, **Directional structure-tensor based coherence to detect seismic channels and faults**. Geophysics, v. 82, A13-A17.

X. Wu, 2017, **Structure-, stratigraphy-, and fault-guided regularization in geophysical inversion**: Geophysical Journal International, v. 210, 184-195.

X. Wu and G. Caumon, 2017, **Simultaneous multiple well-seismic ties using flattened synthetic and real seismograms**: Geophysics, v. 82, IM13-IM20.

X. Wu and X. Janson, 2017, **Directional structure tensors in estimating seismic structural and stratigraphic orientations**: Geophysical Journal International, v. 210, 534-548.

X. Wu and Z. Zhu, 2017, **Methods to enhance seismic faults and construct fault surfaces**: Computers & Geosciences, v. 107, 37-48.

Z. Xue, H. Zhu, and S. Fomel, 2017, **Full waveform inversion using seislet regularization**: Geophysics, v. 82, A43-A49.

R. Zhang and S. Fomel, 2017, **Time variant wavelet extraction with spectral decomposition for seismic inversion**: Interpretation, v. 5, SC9-SC16.

## 2016

M. Bai, X. Chen, J. Wu, G. Liu, Y. Chen, H. Chen, and Q. Li, 2016, **Q-compensated migration by Gaussian beam summation method**: Journal of Geophysics and Engineering, v. 13, 25-48.

J.M. Carcione, T. Zhu, S. Picotti, and D. Gei, 2016, **Imaging septaria geobody in the Boom Clay using a Q-compensated reverse-time migration**: Netherlands Journal of Geosciences, v. 95, 283-291.

Y. Chen, 2016, **Dip-separated structural filtering using seislet transform and adaptive empirical mode decomposition based dip filter**: Geophysical Journal International, v. 206, 457-469.

Y. Chen, W. Huang, D. Zhang, and W. Chen, 2016, **An open-source Matlab code package for improved rank-reduction 3D seismic data denoising and reconstruction**: Computers & Geosciences, v. 95, 59–66.

Y. Chen and Z. Jin, 2016, **Simultaneously removing noise and increasing resolution of seismic data using waveform shaping**: IEEE Geoscience and Remote Sensing Letters, v. 13, 102-104

Y. Chen, J. Ma, and S. Fomel, 2016, **Double sparsity dictionary for seismic noise attenuation**: Geophysics, v. 81, V17-V30

Y. Chen, D. Zhang, Z. Jin, X. Chen, S. Zu, W. Huang, and S. Gan, 2016, **Simultaneous denoising and reconstruction of 5-D seismic data via damped rank-reduction method**: Geophysical Journal International, v. 206, 1695-1717.

P. Deng, Y. Chen, Y. Zhang, and H.-W. Zhou, 2016, **Weighted stacking of seismic AVO data using hybrid AB semblance and local similarity**: Journal of Geophysics and Engineering, v. 13, 152–163.

M. Far and B. Hardage, 2016, **Fracture characterization using converted waves**: Geophysical Prospecting, v. 64, 287–298.

S. Gan, S. Wang, Y. Chen, X. Chen, K. Xian, 2016, **Separation of simultaneous sources using a structural-oriented median filter in the flattened dimension**: Computers & Geosciences, v. 86, 46-54.

S. Gan, S. Wang, Y. Chen, S. Qu, S. Zu, 2016, **Velocity analysis of simultaneous-source data using high-resolution semblance—coping with the strong noise**: Geophysical Journal International, v. 204, 768-779.

S. Gan, S. Wang, Y. Chen, and X. Chen, 2016, **Simultaneous-source separation using iterative seislet-frame thresholding**: IEEE Geoscience and Remote Sensing Letters, v. 13, 197-201.

S. Gan, S. Wang, Y. Chen, X. Chen, W. Huang, and H. Chen, 2016, **Compressive sensing for seismic data reconstruction via fast projection onto convex sets based on seislet transform**: Journal of Applied Geophysics, v. 130, 194–208.

S. Gan, S. Wang, Y. Chen, J. Chen, W. Zhong, C. Zhang, 2016, **Improved random noise attenuation using f-x empirical mode decomposition and local similarity**: Applied Geophysics, v. 13, 127–134.

W. Huang, R. Wang, Y. Chen, H. Li, and S. Gan, 2016, **Damped multichannel singular spectrum analysis for 3D random noise attenuation**: Geophysics, v. 81, V261-V270.

Y. Lee and B. Engquist, 2016, **Multiscale numerical methods for passive advection–diffusion in incompressible turbulent flow fields**: Journal of Computational Physics, v. 317, 33–46.

H. Li, R. Wang, S. Cao, Y. Chen, and W. Huang, 2016, **A method for low-frequency noise suppression based on mathematical morphology in microseismic monitoring**: Geophysics, v. 81, V159-V167.

H. Li, R. Wang, S. Cao, Y. Chen, N. Tian, X. Chen, 2016, **Weak signal detection using multiscale morphology in microseismic monitoring**: Journal of Applied Geophysics, v. 133, 39-49.

W. Liu, S. Cao, Y. Chen, and S. Zu, 2016, **An effective approach to attenuate random noise based on compressive sensing and curvelet transform**: Journal of Geophysics and Engineering, v. 13, 135-145.

W. Liu, S. Gao, and Y. Chen, 2016, **Seismic time–frequency analysis via empirical wavelet transform**: IEEE Geoscience and Remote Sensing Letters, v. 13, 28-32.

W. Liu, S. Gao, Y. Liu, and Y. Chen, 2016, **Synchrosqueezing transform and its application in seismic data analysis**: Journal of Seismic Exploration, v. 25, 27-44.

S. Qu, H. Zhou, R. Liu, Y. Chen, S. Zu, S. Yu, J. Yuan, Y. Yang, 2016, **Deblending of simultaneous-source seismic data using fast iterative shrinkage-thresholding algorithm with firm-thresholding**: Acta Geophysica, v. 64, 1064–1092.

Y. Sripanich and S. Fomel, 2016, **Theory of interval traveltime parameter estimation in layered anisotropic media**: Geophysics, v. 81, C253-C263.

A. Stovas and S. Fomel, 2016, **Mapping of moveout attributes using local slopes**: Geophysical Prospecting, v. 64, 31–37.

J. Sun, S. Fomel, T. Zhu, and J. Hu, 2016,** Q-compensated least-squares reverse-time migration using lowrank one-step wave extrapolation**: Geophysics, v. 81, S271-S279.

J. Sun, S. Fomel, and L. Ying, 2016, **Lowrank one-step wave extrapolation for reverse-time migration**: Geophysics, v. 81, S39-S54.

J. Wu, R. Wang, Y. CHen, Y. Zhang, S. Gan, C. Zhou, 2016, **Multiple attenuation using shaping regularization with seislet domain sparsity constraint**: Journal of Seismic Exploration, v. 25, 1-9.

X. Wu, 2016, **Methods to compute salt likelihoods and extract salt boundaries from 3D seismic images**: Geophysics, v. 81, IM119-IM126.

Z. Xue, Y. Chen, S. Fomel, and J. Sun, 2016, **Imaging incomplete data and simultaneous-source data using least-squares reverse-time migration with shaping regularization**: Geophysics, v. 81, S11-S20.

Y. Xue, J. Yang, J. Ma, and Y. Chen, 2016, **Amplitude-preserving nonlinear adaptive multiple attenuation using the high-order sparse Radon transform**: Journal of Geophysics and Engineering, v. 13, 207-219.

D. Zhang, Y. Chen, W. Huang, and S. Gan, 2016, **Multi-step damped multichannel singular spectrum analysis for simultaneous reconstruction and denoising of 3D seismic data**: Journal of Geophysics and Engineering, v. 13, 704–720.

H. Zhu and S. Fomel, 2016, **Building good starting models for full waveform inversion using adaptive matching filter**: Geophysics,v. 81, U61-U72..

H. Zhu, S. Li, S. Fomel, G. Stadler, and O. Ghattas, 2016, **A Bayesian approach to estimate uncertainty for full-waveform inversion using a priori information from depth migration**: Geophysics, v. 81, R307-R323.

T. Zhu and J. Sun, 2016, **Viscoelastic reverse-time migration with attenuation compensation**, Geophysics: v. 82, S61-S73.

T. Zhu, J. Carcione, and M. Botelho, 2016, **Reverse-time imaging of ground-penetrating radar and SH-seismic data including the effects of wave loss**: Geophysics, v. 81, H21-H32.

T. Zhu, 2016,** Implementation aspects of attenuation compensation in reverse-time migration**: Geophysical Prospecting, v. 64, 657–670.

S. Zu, H. Zhou, Y. Chen, S. Qu, X. Zou, H. Chen, and R. Liu, 2016, **A periodically varying code for improving deblending of simultaneous sources in marine acquisition**: Geophysics, v. 81, V213-V225.

## 2015

T. Alkhalifah, S. Fomel, and Z. Wu, 2015, **Source-receiver two-way wave extrapolation for prestack exploding-reflector modeling and migration**: Geophysical Prospecting, v.63, 23-34.

W. Burnett, A. Klokov, S. Fomel, R. Bansal, E. Liu, and T. Jenkinson, 2015, **Seismic diffraction interpretation at Piceance Creek**: Interpretation, v. 3, SF1-SF14.

Y. Chen, 2015, **Deblending using a space-varying median filter****:** Exploration Geophysics: v. 46, 332-341.

Y. Chen, 2015,** Iterative deblending with multiple constraints based on shaping regularization**: IEEE Geoscience and Remote Sensing Letters, v. 12, 2247-2251.

Y. Chen and S. Fomel, 2015, **Random noise attenuation using local signal-and-noise orthogonalization**: Geophysics, v. 80, WD1-WD9.

Y. Chen, S. Gan, T. Liu, J. Yuan, Y. Zhang, and Z. Jin, 2015, **Random noise attenuation by a selective hybrid approach using f-x empirical mode decomposition**: Journal of Geophysics and Engineering, v. 12, 12-25

Y. Chen, S. Gan, S. Qu, and S. Zu, 2015, **Sparse inversion for water bubble removal and spectral enhancement**: Journal of Applied Geophysics, v. 117, 81-90.

Y. Chen, S. Jiao, J. Ma, H. Chen, Y. Zhou, and S. Gan, 2015, **Ground-roll noise attenuation using a simple and effective approach based on local band-limited orthogonalization**: IEEE Geoscience and Remote Sensing Letters, v. 12, 2316-2320.

Y. Chen, Z. Jin, K. Xiang, M. Bai, W. Huang, 2015, **Iterative deblending using shaping regularization with a combined PNMO-MF-FK coherency filter**: Journal of Applied Geophysics, v. 122, 18-27.

Y. Chen, T. Liu, and X. Chen, 2015, **Velocity analysis using similarity-weighted semblance**: Geophysics, v. 80, A75-A82.

Y. Chen, J. Yuan, S. Zu, S. Qu, S. Gan, 2015, **Seismic imaging of simultaneous-source data using constrained least-squares reverse time migration: Journal of Applied Geophysics**, v. 114, 32-35.

Y. Chen, G. Zhang, S. Gan, and C. Zhang, 2015, **Enhancing seismic reflections using empirical mode decomposition in the flattened domain**: Journal of Applied Geophysics, v. 119, 99–105.

Y. Chen, L. Zhang, and L. Mo, 2015, **Seismic data interpolation using nonlinear shaping regularization**: Journal of Seismic Exploration, v. 24, 327-342.

L. Decker, X. Janson, and S. Fomel, 2015, **Carbonate reservoir characterization using seismic diffraction imaging**: Interpretation, v. 3, SF21-SF30.

B. Engquist, B. Froese, and R. Tsai, 2015, **Fast sweeping methods for hyperbolic systems of conservation laws at steady state II**: Journal of Computational Physics, v. 286, 70–86.

I. Figueiredoa, S. Kumar, C. Oliveira, J. Ramos, and B. Engquist, 2015, **Automated lesion detectors in retinal fundus images**: Computers in Biology and Medicine, v. 66, 47–65.

S. Fomel, 2015,** Reproducible research as a community effort: Lessons from the Madagascar project:** Computing in Science and Engineering, v. 17, 20-26.

S. Gan, S. Wang, Y. Chen, Y. Zhang, and Z. Jin, 2015, **Dealiased seismic data interpolation using seislet transform with low-frequency constraint**: IEEE Geoscience and Remote Sensing Letters, v. 12, 2150-2154.

S. Gan, Y. Chen, S. Zu, S. Qu, and W. Zhong, 2015, **Structure-oriented singular value decomposition for random noise attenuation of seismic data**: Journal of Geophysics and Engineering, v. 12, 262-272.

J. Hu, S. Fomel, and L. Ying, 2015, **A fast algorithm for 3D azimuthally anisotropic velocity scan**: Geophysical Prospecting, v. 63, 368-377.

J. Hu and L. Ying, 2015, **A fast algorithm for the energy space boson Boltzmann collision operator**: Mathematics of Computation, v. 84, 271-288.

S. Jiao, Y. Chen, M. Bai, W. Yang, E. Wang, and S. Gan, 2015, **Ground roll attenuation using non-stationary matching filtering**: Journal of Geophysics and Engineering, v. 12, 922-933.

P. Karimi, S. Fomel, L. Wood, and D. Dunlap, 2015, **Predictive coherency: Interpretation**, v. 3, SAE1-SAE7.

P. Karimi, 2015, **Structure-constrained relative acoustic impedance using stratigraphic coordinates**: Geophysics, v. 80, A63-A67.

P. Karimi and S. Fomel, 2015, **Stratigraphic coordinates: a coordinate system tailored to seismic interpretation: Geophysical Prospecting**, v. 63, 1246-1255.

S. Li and S. Fomel, 2015,** A robust approach to time-to-depth conversion and interval velocity estimation from time migration in the presence of lateral velocity variations**: Geophysical Prospecting, v. 63, 315-337.

Y. Liu, S. Fomel, and C. Liu, 2015, **Signal and noise separation in prestack seismic data using velocity-dependent seislet transform**: Geophysics, v. 80, WD117-WD128.

S. Qu, H. Zhou, Y. Chen, S. Yu, H. Zhang, J. Yuan, Y. Yang, and M. Qin, 2015, **An effective method for reducing harmonic distortion in correlated vibroseis data**: Journal of Applied Geophysics, v. 115, 120-128.

Y. Sripanich and S. Fomel, 2015, **On anelliptic approximations for qP velocities in transversely isotropic and orthorhombic media**: Geophysics, v. 80, C89-C105.

J. Sun, T. Zhu, and S. Fomel, 2015, **Viscoacoustic modeling and imaging using low-rank approximation**: Geophysics, v. 80, A103-A108.

Q. Xua, K. Wang C. Medina, and B. Engquist, 2015, **A mathematical model to predict adiabatic temperatures from isothermal heat evolutions with validation for cementitious materials**: International Journal of Heat and Mass Transfer, v. 89, 333–338.

P. Yang and S. Fomel, 2015, **Seislet-based morphological component analysis using scale-dependent exponential shrinkage**: Journal of Applied Geophysics, v. 118, 66-74.

W. Yang, R. Wang, J. Wu, Y. Chen, S. Gan, and W. Zhong, 2015, **An efficient and effective common reflection surface stacking approach using local similarity and plane-wave flattening**: Journal of Applied Geophysics, v. 117, 67-72.

W. Yang, R. Wang, Y. Chen, J. Wu, S. Qu, J. Yuan, and S. Gan, 2015,** Application of spectral decomposition using regularized non-stationary autoregression to random noise attenuation**: Journal of Geophysics and Engineering, v. 12, 175-187.

H. Zhu, E. Bozdag, and J. Tromp, 2015,** Seismic structure of the European crust and upper mantle based on adjoint tomography**: Geophysical Journal International, v. 201, 18-52.

T. Zhu, 2015, **Viscoelastic time-reversal imaging**: Geophysics, v. 80, A45-A50.

T. Zhu and J. M. Harris, 2015, **Application of boundary-preserving seismic inversion for delineating reservoir boundaries and zone of CO2 saturation**: Geophysics, v. 80, M33-M41.

T. Zhu and J. Harris, 2015, **Improved seismic images by Q-compensated reverse-time migration: application to the crosswell field data, west Texas**: Geophysics, v. 80, B61-B67.

T. Zhu and J. Harris, 2015,** Estimation of P-wave velocity, S-wave velocity and attenuation factor by iterative joint inversion of crosswell seismic data**: Journal of Applied Geophysics, v. 123, 71-80.

Q. Xu, K. Wang, C. Medina, and B. Engquist, 2015, **A mathematical model to predict adiabatic temperatures from isothermal heat evolutions with validation for cementitious materials**: International Journal of Heat and Mass Transfer, v. 89, 333–338.

## 2014

G. Ariel, B. Engquist, S. J. Kim, and R. Tsai, 2014, **Iterated averaging of three-scale oscillatory systems**: Communications in Mathematical Sciences, v. 12, 791-824.

A. R. Benson, J. Poulson, K. Tran, B. Engquist, and L. Ying, 2014, **A parallel directional fast multipole method**: SIAM Journal on Scientific Computing, 36(4), C335–C352.

J.-D. Benamou, B. D. Froese, and A. M. Oberman, 2014, **Numerical solution of the optimal transportation problem using the Monge-Ampère equation**: Journal of Computational Physics, v. 260, 107–126.

Y. Chen and J. Ma, 2014,** Random noise attenuation by f-x emprical mode decomposition predictive filtering**: Geophysics, v. 79, V81-V91.

Y. Chen, K. Chen, P. Shi, and Y. Wang, 2014, **Irregular seismic data reconstruction using a percentile-half-thresholding algorithm**: Journal of Geophysics and Engineering, 11, 065001.

Y. Chen, S. Fomel, and J. Hu, 2014, **Iterative deblending of simultaneous-source seismic data using seislet-domain shaping regularization**: Geophysics, v. 79, V81–V91.

Y. Chen, T. Liu, X. Chen, J. Li, and E. Wang, 2014, **Time-frequency analysis of seismic data using synchrosqueezing wavelet transform**: Journal of Seismic Exploration, 23, 303-312.

Y. Chen, J. Yuan, Z. Jin, K. Chen, and L. Zhang, 2014, **Deblending using normal moveout and median filtering in common-midpoint gathers**: Journal of Geophysics and Engineering, v. 11, 045012.

Y. Chen, C. Zhao, J. Yuan, Z. Jin, 2014, Applications of empirical mode decomposition in random noise attenuation of seismic data: Journal of Seismic Exploration, v. 23, 481-495.

J. Cheng and S. Fomel, 2014,** Fast algorithms for elastic wave-mode separation and vector decomposition using low-rank approximation for anisotropic media**: Geophysics, v. 79, C97-C110.

B. Engquist and B. Froese, 2014, **Application of the Wasserstein metric to seismic signals**: Communications in Mathematical Science, v. 12, 979-988.

B. Engquist and C. Frederick, 2014, Nonuniform sampling and multiscale computation: Multiscale Modeling and Simulation, v. 12, 1890–1901.

G. Fang, S. Fomel, Q. Du, and J. Hu, 2014,** Lowrank seismic wave extrapolation on a staggered grid:** Geophysics, v. 79, T157-T168.

M. Far, J.S.S. de Figueiredo, D. Han, R. R. Stewart, J. P. Castagna, and N. Dyaur, 2014, **Measurements of seismic anisotropy and fracture compliances in synthetic fractured media**: Geophysical Journal International,v. 197, 1845-1857.

M. Far and B. Hardage, 2014, **Interpretation of fractures and stress anisotropy in Marcellus shale using multicomponent seismic data**: Interpretation, 2(2), SE105–SE115. doi: 10.1190/INT-2013-0108.1.

M. Far, B. Hardage, and D. Wagner, 2014, **Fracture parameter inversion for Marcellus shale**: Geophysics, 79(3), C55–C63. doi: 10.1190/geo2013-0236.1.

S. Fomel and E. Landa, 2014, **Structural uncertainty of time-migrated seismic images**: Journal of Applied Geophysics, v. 101, 27–30.

S. Fomel and M. van der Baan, 2014, **Local skewness attribute as a seismic phase detector**: Interpretation, v. 2, SA49–SA56.

R. H. Herrera, S. Fomel, and M. van der Baan, 2014, **Automatic approaches for seismic to well tying**: Interpretation, v. 2, SD101–SD109.

J. Poulson, L. Demanet, N. Maxwell, and L. Ying, 2014, **A parallel butterfly algorithm**: SIAM Journal on Scientific Computing, v. 36, C49–C65.

P. Tsuji, J. Poulson, B. Engquist, and L. Ying, 2014, **Sweeping preconditioners for elastic wave propagation with spectral element methods**: ESAIM Mathematical Modelling and Numerical Analysis, v.48, 433-447.

R. Zhang, X. Song, S. Fomel, M. K. Sen, and S. Srinivasan, 2014, **Time-lapse prestack seismic data registration and inversion for CO2 sequestration study at Cranfield**: Geophysical Prospecting, v. 62, 1028–1039.

## 2013

G. Ariel, B. Engquist, S. Kim, Y. Lee, and R. Tsai, 2013, **A multiscale method for highly oscillatory dynamical systems using a Poincaré map type technique**: Journal of Scientific Computing, v. 54, 247-268.

Y. Cai, S. Fomel, and H. Zeng, 2013, **Automated spectral recomposition with application in stratigraphic interpretation**: Interpretation, v. 1, SA109-SA116..

Z. Chen, S. Fomel, and W. Lu, 2013, **Accelerated plane-wave destruction**: Geophysics, v. 78, V1–V9.

Z. Chen, S. Fomel, and W. Lu, 2013, **Omnidirectional plane-wave destruction**: Geophysics, v. 78, V171-V179..

J. Chu, B. Engquist, M. Prodanovic, and R. Tsai, 2013,** A multiscale method coupling network and continuum models in porous media II: single- and two-phase flows**: Advances in Applied Mathematics, Modeling, and Computational Science, v. 66, 161-185.

B. Engquist, B. Froese, and R. Tsai, 2013, **Fast sweeping methods for hyperbolic systems of conservation laws at steady state**: Journal of Computational Physics, v. 255, 316–338.

B. Engquist and L. Ying, 2013, **A fast algorithm for reiterated homogenization**: Communications in Mathematical Sciences, v. 11, 635-649.

M. Far, L. Thomsen, C.M. Sayers, 2013, **Seismic Characterization of Naturally Reservoirs with Asymmetric Fractures**, Geophysics, v. 78, N1-N10.

M. Far, C.M. Sayers, L. Thomsen, D. Han and J.P. Castagna, 2013,** Seismic Characterization of Naturally Fractured Reservoirs Using Amplitude Versus Oset and Azimuth**, Geophysical Prospecting, v. 61, 427-447.

S. Fomel, P. Sava, I. Vlad, Y. Liu, and V. Bashkardin, 2013, **Madagascar open-source software project****:** Journal of Open Research Software, v, 1, e8.

S. Fomel, L. Ying, and X. Song, 2013, **Seismic wave extrapolation using lowrank symbol approximation**: Geophysical Prospecting, v. 61, 526–536.

S. Fomel and R. Kazinnik, 2013, **Nonhyperbolic common reflection surface**: Geophysical Prospecting, v. 61, 21-27.

S. Fomel, 2013, **Seismic data decomposition into spectral components using regularized nonstationary autoregression**: Geophysics, v. 78, O69-O76.

B. D. Froese and A. M. Oberman, 2013, **Convergent filtered schemes for the Monge--Ampère partial differential equation**: SIAM Journal on Numerical Analysis, v. 51, 423–444.

J. Hu and S. Jin, 2013, **On the quasi-random choice method for the Liouville equation of geometrical optics with discontinuous wave speed**: Journal of Computational Mathematics, v. 31, 573-591.

J. Hu, S. Fomel, L. Demanet, and L. Ying, 2013, **A fast butterfly algorithm for the hyperbolic Radon transform**: Geophysics, v. 78, U41-U51.

A. Klokov and S. Fomel, 2013, **Selecting an optimal aperture in Kirchhoff migration using dip-angle images**: Geophysics, v. 78, S243-S254.

S.Li and S. Fomel, 2013, **Kirchhoff migration using eikonal-based computation of traveltime source-derivatives**: Geophysics, v. 78, S211-S219.

S.Li, A. Vladimirsky, and S. Fomel, 2013, **First-break traveltime tomography with the double-square-root eikonal equation**: Geophysics, v. 78, U89-U101.

Y. Liu and S. Fomel, 2013, **Seismic data analysis using local time-frequency decomposition**: Geophysical Prospecting, v. 61, 516–525.

J. Poulson, B. Engquist, S. Li, and L. Ying, 2013, **A parallel sweeping preconditioner for high frequency heterogeneous 3D Helmholtz equations**: SIAM Journal on Scientific Computing, v. 35, C194-C212.

J. Poulson, B. Marker, R. A. van de Geijn, J. R. Hammond, and N. A. Romero, 2013, **Elemental: a new framework for distributed memory dense matrix computations**, ACM Transactions on Mathematical Software, v. 39, 13:1--13:24.

C. Saragiotis, T. Alkhalifah, and S. Fomel, 2013,** Automatic traveltime picking using instantaneous traveltime**: Geophysics, v. 78, T53–T58.

X. Song, S. Fomel, and L. Ying, 2013,** Lowrank finite-differences and lowrank Fourier finite-differences for seismic wave extrapolation**: Geophysical Journal International, v. 193, 960-969.

X. Song and T. Alkhalifah, 2013, **Modeling of pseudo-acoustic P-waves in orthorhombic media with lowrank
approximation**: Geophysics, v. 78, C33-C40.

R. Zhang, X. Song, S. Fomel, M. K. Sen, and S. Srinivasan, 2013, **Time-lapse seismic data registration and inversion for CO2 sequestration study at Cranfield**: Geophysics, v. 78, B329-B338.

## 2012

A. Abdulle, E. Weinan, B. Engquist, and E. Vanden-Eijnden, 2012,** The heterogeneous multiscale method**: Acta Numerica, v. 21, 1-87.

G. Ariel, B. Engquist, and Y.-H. R. Tsai, 2012, **Oscillatory Systems with Three Separated Time Scales: Analysis and Computation: Numerical Analysis of Multiscale Problem**s (Lecture Notes in Computational Science and Engineering), v. 82, 23-45.

L. Demanet, M. Ferrara, N. Maxwell, J. Poulson, and L. Ying, 2012, **A butterfly algorithm for synthetic aperture radar imaging**: SIAM Journal on Imaging Sciences, v. 5, 203-243.

L. Demanet and L. Ying, 2012, **Fast wave computation via Fourier integral operators**: Mathematics of Computation, v. 81, 1455-1486.

B. Engquist, H. Holst, and O. Runborg, 2012, **Multiscale Methods for Wave Propagation in Heterogeneous Media Over Long Time**: Numerical Analysis of Multiscale Problems (Lecture Notes in Computational Science and Engineering), v, 82, 167-186.

B. Engquist and L. Ying, 2012, **Fast algorithms for high frequency wave propagation: Numerical Analysis of Multiscale Problems** (Lecture Notes in Computational Science and Engineering), v. 83, 127-161.

B. Engquist, J. Häggblad and O. Runborg, 2012, **On energy preserving consistent boundary conditions for the Yee scheme in 2D**: BIT Numerical Mathematics, v. 52, 615-637.

J. Häggblad and B. Engquist, 2012, **Consistent modeling of boundaries in acoustic finite-difference time-domain simulations**: Journal of Acoustical Society of America, v. 132, 1303-1310.

J. Hu and L. Ying, 2012, **A fast spectral algorithm for the quantum Boltzmann collision operator**: Communications in Mathematical Sciences, v. 10, 989-999.

A. Klokov, S. Fomel, 2012, **Separation and imaging of seismic diffractions using migrated dip-angle gathers**: Geophysics, v. 77, S131-S143.

L. Lin, J. Lu, L. Ying, W. E, 2012, **Adaptive local basis set for Kohn–Sham density functional theory in a discontinuous Galerkin framework I: Total energy calculation**: Journal of Computational Physics, v. 231, 2140–2154.

L. Lin, C. Yang, J. Lu, L. Ying, and W. E, 2012,** A Fast Parallel Algorithm for Selected Inversion of Structured Sparse Matrices with Application to 2D Electronic Structure Calculations**: SIAM Journal on Scientific Computing, v. 33, 1329-1351.

P. Schmitz and L. Ying, 2012, **A fast direct solver for elliptic problems on general meshes in 2D**, Journal of Computational Physics, v. 231, 1314–1338.

A. Stovas and S. Fomel, 2012, **Shifted hyperbola moveout approximation revisited**: Geophysical Prospecting, v. 60, 395–399.

A. Stovas and S. Fomel, 2012, **Generalized non-elliptic approximation in tau-p domain**: Geophysics, v. 77, U23–U30.

N. M. Tanushev, Y.-H. R. Tsai, and B. Engquist, 2012,** A Coupled Finite Difference – Gaussian Beam Method for High Frequency Wave Propagation: Numerical Analysis of Multiscale Problems** (Lecture Notes in Computational Science and Engineering), v. 82, 401-420.

P. Tsuji, B. Engquist, and L. Ying, 2012, **A sweeping preconditioner for time-harmonic Maxwell's equations with finite element**s: Journal of Computational Physics, v. 231, 3770–3783.

P. Tsuji and L. Ying, 2012,** A sweeping preconditioner for Yee's finite difference approximation of time-harmonic Maxwell's equations**: Frontiers of Mathematics in China, v. 7, 347-363.

L. Ying, 2012, **A pedestrian introduction to fast multipole methods**: Science China Mathematics, v. 55, 1043-1051.

## 2011

T. Alkhalifah and S. Fomel, 2011, **Angle gathers in wave-equation imaging for transversely isotropic media**: Geophysical Prospecting, 59, 422-431. [link]

T. Alkhalifah and S. Fomel, 2011, **The basic components of residual migration in VTI media using anisotropy continuation**: Journal of Petroleum Exploration and Production Technology, 1, 17-22. [link]

G. Ariel, B.Engquist, N.M.Tanushev, R.Tsai, 2011, **Gaussian Beam Decomposition of High Frequency Wave Fields Using Expectation-Maximization**, Journal of Computational Physics, Vol.230, Issue 6, 2303-2321. [link]

W. Burnett and S. Fomel, 2011, **Azimuthally anisotropic 3D velocity continuation**: International Journal of Geophysics, Article ID 484653. [link]

L. Casasanta and S. Fomel, 2011, **Velocity-independent tau-p moveout in a vertically-varying VTI medium**: Geophysics, v. 76, U45-U57. [link]

L. Demanet and L. Ying, 2011, **Discrete symbol calculu**s: SIAM Review, v. 53, 71-104. [link]

B. Engquist, H. Holst, and O. Runborg, 2011, **Multi-scale methods for wave propagation in heterogeneous media**: Commun. Math. Sci., 9(1):33-56. [link]

B. Engquist and L. Ying, 2011, **Sweeping preconditioner for the Helmholtz equation: Hierarchical matrix representation**: Communications in Pure and Applied Mathematics, v. 64, 697-735. [link]

B. Engquist and L. Ying, 2011,** Sweeping preconditioner for the Helmholtz equation: Moving perfectly matched layers**: Multiscale Modeling and Simulation, v. 9, No. 2, 686-710. [link]

S. Fomel, 2011, **Theory of 3-D angle gathers in wave-equation seismic imaging**: Journal of Petroleum Exploration and Production Technology, 1, 11-16. [link]

S. Jiang, B. Ren, P. Tsuji, L. Ying, 2011, **Second kind integral equations for the first kind Dirichlet problem of the biharmonic equation in three dimensions**: Journal of Computational Physics, v. 230, 7488-7501.

L. Lin, C. Yang, J. Meza, J. Lu, L. Ying, and W. E, 2011, **SelInv--an algorithm for selected inversion of a sparse symmetric matrix**, ACM Transactions on Mathematical Software, v. 37, 40:1-40:19. [link]

L. Lin, J. Lu, and L. Ying, 2011, **Fast construction of hierarchical matrix representation from matrix–vector multiplication**: Journal of Computational Physics, v. 230, 4071-4087. [link]

Y. Liu and S. Fomel, 2011, **Seismic data interpolation beyond aliasing using regularized nonstationary autoregression**: Geophysics, v. 76, V69-V77 . [link]

G. Liu, S. Fomel, and X. Chen, 2011, **Stacking angle-domain common-image gathers for normalization of illumination**: Geophysical Prospecting, 59, 244-255. [link]

G. Liu, S. Fomel, and X. Chen, 2011, **Time-frequency characterization using local attributes**: Geophysics, v. 76, P23-P34. [link]

X. Song and S. Fomel, 2011, **Fourier finite-difference wave propagation**: Geophysics, v. 76, T123-T129 . [link]

P. Tsuji, D. Xiu, and L. Ying, 2011 **A fast method for high-frequency acoustic scattering from random scatterers**: International Journal for Uncertainty Quantification, v. 1, Issue 2, 99-117. [link]

## 2010

T. Alkhalifah and S. Fomel, 2010, An eikonal based formulation for traveltime perturbation with respect to the source location: Geophysics, 75, T175-T183. [link]

L. Demanet and L. Ying, 2010, **Scattering in flatland: efficient representations via wave atoms**: Foundations of Computational Mathematics, 10-5, 569-613. [link]

B. Engquist and L. Ying, 2010, **Fast directional algorithms for the Helmholtz kernel: **Journal of Computational and Applied Mathematics, v. 234 Issue 6, 1851-1859. [link]

S. Fomel, 2010, Predictive painting of 3D seismic volumes: Geophysics, v. 75, A25-A30. [link]

S. Fomel and A. Stovas, 2010, Generalized nonhyperbolic moveout approximation: Geophysics, v.75, U9–U18. [link]

S. Fomel and Y. Liu, 2010, Seislet transform and seislet frame: Geophysics, v. 75, V25-V38. [link]

S. H. Kazemeini, C. Yang, C. Juhlin, S. Fomel, C. Cosma, 2010, Enhancing seismic data resolution using prestack blueing: Case history from the Ketzin CO2 injection site, Germany: Geophysics, 75, V101-V110. [link]

S. H. Kazemeini, C. Juhlin, and S. Fomel, 2010, Monitoring CO2 response on surface seismic data; a rock physics and seismic modeling feasibility study at the CO2 sequestration site, Ketzin, Germany: Journal of Applied Geophysics, v. 71, 109-124. [link]

Y. Liu and S. Fomel, 2010, OC-seislet: seislet transform construction with differential offset continuation: Geophysics, 75, WB235-WB245. [link]

Y.Liu, S. Fomel, and G. Liu, 2010, Nonlinear structure-enhancing filtering using plane-wave construction: Geophysical Prospecting, v. 58, 415-427. [link]

J. Qian and L. Ying, 2010, **Fast multiscale Gaussian wavepacket transforms and multiscale Gaussian beams for the wave equation**: Multiscale Modeling and Simulation, v. 8, 1803-1837. [link]

J. Qian and L. Ying, 2010, **Fast Gaussian wavepacket transforms and Gaussian beams for the Schrodinger equation**: Journal of Computational Physics, v. 229, 7848-7873. [link]

Reproducible papers by ourselves and other Madagascar users