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Volume 87, Number 2
March 2022
Geophysics Cover Image for Volume 87, Issue 2
ISSN: 0016-8033
EISSN: 1942-2156

Editor's corner

This issue of Geophysics
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Geophysics Letters

On the relation between the propagator matrix and the Marchenko focusing function
Kees Wapenaar; Sjoerd de Ridder
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Elastic anisotropy of shales: The roles of crack alignment and compliance ratio
Jihui Ding; Anthony C. Clark; Tiziana Vanorio; Adam D. Jew; John R. Bargar
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Ground-roll extraction using the Karhunen-Loeve transform in the time-frequency domain
Aleksander S. Serdyukov
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Case Histories

Spatiotemporal variations in seismic attenuation during hydraulic fracturing: A case study in a tight oil reservoir in the Ordos Basin, China
Han Li; Xu Chang; Xiao-Bi Xie; Yibo Wang
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Seismic low-frequency shadows and their application to detect CO2 anomalies on time-lapse seismic data: A case study from the Sleipner Field, North Sea
Emmanuel Anthony; Nimisha Vedanti
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Geologic forward prospecting using improved tunnel-seismic-while-drilling method: A case study of the water supply project at Songhua River, Jilin, China
Shucai Li; Lei Chen; Bin Liu; Xinji Xu; Lanbo Liu; Yangkang Chen
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Far-offset detection of normal modes and diving waves: A case study from the Valhall Field, southern North Sea
Filipe Borges; Martin Landrø
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Hydrologic changes of in-situ gravimetry
Min Zhang; Ziwei Liu; Qiong Wu; Yuntian Teng; Xiaotong Zhang; Feibai Du; Ying Jiang
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Forward modeling and 3D inversion of electromagnetic data collected over the McArthur River uranium deposit in the Athabasca Basin, Canada
Reza Mir; Peter Fullagar; Mehrdad Darijani; Richard Smith; Shawn Scott; Martin Ross; Pejman Shamsipour; Michel Chouteau; Kevin Ansdell; Mohamed Gouiza
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Near-surface imaging from traffic-induced surface waves with dense linear arrays: An application in the urban area of Hangzhou, China
Binbin Mi; Jianghai Xia; Gang Tian; Zhanjie Shi; Huaixue Xing; Xiaojun Chang; Chaoqiang Xi; Ya Liu; Ling Ning; Tianyu Dai; Jingyin Pang; Xinhua Chen; Changjiang Zhou; Hongyu Zhang
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Single-step probabilistic inversion of 3D seismic data of a carbonate reservoir in Southwest Iran
Hamed Heidari; Thomas Mejer Hansen; Hamed Amini; Mohammad Emami Niri; Rasmus Bødker Madsen; Navid Amini
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Borehole Geophysics

An enhanced accuracy method to determine oil saturation by carbon/oxygen logging in tight reservoirs
Feng Zhang; Jilin Fan; Fei Qiu; Bing Xie; Xianghui Li; Hui Zhang
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Seismic-while-drilling by drill-bit source and large-aperture ocean-bottom array
Flavio Poletto; Alex Goertz; Cinzia Bellezza; Endre Vange Bergfjord; Piero Corubolo; John Even Lindgård; Lars Martin Moskvil
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Inversion-based interpretation of borehole spontaneous potential measurements for accurate estimation of water resistivity in the presence of shoulder-bed and mud-filtrate invasion effects
Joshua Bautista-Anguiano; Carlos Torres-Verdín
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Processing of seismic diffractions from carbonate nodules in clay formations
Cinzia Bellezza; Flavio Poletto; Biancamaria Farina; Giorgia Pinna; Laurent Wouters; Noël Vandenberghe; Elio Poggiagliolmi
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A deep learning approach to design a borehole instrument for geosteering
M. Shahriari; A. Hazra; D. Pardo
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Electrical and Electromagnetic Methods

Leaky waveguides in hydrocarbon reservoirs and their implications for oil banks detection
Jesus Manuel Felix Servin; Max Deffenbaugh
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Bayesian subsampling of time-domain electromagnetic data using kernel density product
Hai Li; Guoqiang Xue; Wen Chen
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Do metal infrastructure effects cancel out in time-lapse electromagnetic measurements?
Gurban Orujov; Andrei Swidinsky; Rita Streich
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Gravity and Magnetic Exploration Methods

Transformation of magnetic data to the pole and vertical dip and a related apparent susceptibility transform: Exact and approximate approaches
Richard S. Smith; Eric A. Roots; Rajesh Vavavur
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Potential field data interpolation by Taylor series expansion
Tao Chen; Dikun Yang
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Joint inversion of gravity and gravity gradient data: A systematic evaluation
Joseph Capriotti; Yaoguo Li
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Interpretation Methods

Using relative geologic time to constrain convolutional neural network-based seismic interpretation and property estimation
Haibin Di; Zhun Li; Aria Abubakar
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Constructing the resistivity-to-sediment-type transform for the interpretation of airborne electromagnetic data
Noah Dewar; Rosemary Knight
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Passive Seismic and Microseismic Methods

Localizing microseismic events on field data using a U-Net-based convolutional neural network trained on synthetic data
N. A. Vinard; G. G. Drijkoningen; D. J. Verschuur
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Receiver grouping strategies for hybrid geometric-mean reverse time migration
Tong Bai; Bin Lyu; Paul Williamson; Nori Nakata
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Arrival-time picking of microseismic events based on MSNet
Guanqun Sheng; Shuangyu Yang; Xin-Gong Tang; Xiaolong Guo
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Reservoir Geophysics

Uncertainty quantification in stochastic inversion with dimensionality reduction using variational autoencoder
Mingliang Liu; Dario Grana; Leandro Passos de Figueiredo
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Gaussian mixture model deep neural network and its application in porosity prediction of deep carbonate reservoir
Yingying Wang; Liping Niu; Luanxiao Zhao; Benfeng Wang; Zhiliang He; Hong Zhang; Dong Chen; Jianhua Geng
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Rock Physics

The development of a machine-learning approach to construct a field-scale rock-physics transform
Ian Gottschalk; Rosemary Knight
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Using rock-physics models to validate rock composition from multimineral log analysis
Liwei Cheng; Manika Prasad; Reinaldo J. Michelena; Ali Tura; Shamima Akther; Petar Vladov Angelov; Rao Narhari Srinivasa
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Dynamic-to-static modeling
Javad Sharifi
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Experimental quantification of the evolution of the static mechanical properties of tight sedimentary rocks during increasing-amplitude load and unload cycling
Yang Wang; Luanxiao Zhao; De-Hua Han; Qianqian Wei; Yonghao Zhang; Hemin Yuan; Jianhua Geng
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An accurate analytical model for squirt flow in anisotropic porous rocks — Part 1: Classical geometry
Yury Alkhimenkov; Beatriz Quintal
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Supplementary data
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Seismic Data Acquisition

Toward improved distributed acoustic sensing sensitivity for surface-based reflection seismics: Configuration tests at the Aquistore CO2 storage site
Don White; Gilles Bellefleur; Kevin Dodds; Zeinab Movahedzadeh
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Seismic Inversion

Double-scale supervised inversion with a data-driven forward model for low-frequency impedance recovery
Sanyi Yuan; Xinqi Jiao; Yaneng Luo; Wenjing Sang; Shangxu Wang
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Seismic inversion using complex spherical-wave reflection coefficient at different offsets and frequencies
Guangsen Cheng; Xingyao Yin; Zhaoyun Zong; Tongxing Xia; Jianli Wang; Haojie Liu
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Seismic velocity model building using neural networks: Training data design and learning generalization
Hani Alzahrani; Jeffrey Shragge
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Estimation of the depth-domain seismic wavelet based on velocity substitution and a generalized seismic wavelet model
Jie Zhang; Xuehua Chen; Wei Jiang; Yunfei Liu; He Xu
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Building a full-waveform inversion starting model from wells with dynamic time warping and convolutional neural networks
Jiashun Yao; Yanghua Wang
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Ultralow-frequency amplitude variation with angle inversion of plane-wave primary reflection seismograms
Lasse Amundsen; Bjørn Ursin
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Seismic Migration

Prestack diffraction separation by parameterizing the reflection local slope
Chuangjian Li; Suping Peng; Xiaoqin Cui; Qiannan Liu; Peng Lin
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Reverse time migration of phase-encoded all-order multiples
Yike Liu; Yanbao Zhang; Yingcai Zheng
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Reverse time migration with an exact two-way illumination compensation
Yuzhu Liu; Weigang Liu; Zheng Wu; Jizhong Yang
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Direct expansion of Fourier extrapolator for one-way wave equation using Chebyshev polynomials of the second kind
Hanjie Song; Jinhai Zhang; Yongliao Zou
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Seismic Modeling and Wave Propagation

Liouville partial-differential-equation methods for computing 2D complex multivalued eikonals in attenuating media
Shingyu Leung; Jiangtao Hu; Jianliang Qian
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Frequency-domain seismic data transformation from point source to line source for 2D viscoelastic anisotropic media
Qingjie Yang; Bing Zhou; Mohamed Kamel Riahi; Mohammad Al-Khaleel
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Impacts of model resolution on multiple prediction
Yue Ma; Yujin Liu; Yi Luo
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Seismic wave equation formulated by generalized viscoelasticity in fluid-saturated porous media
Jun Ni; Hanming Gu; Yanghua Wang
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Calculating multiple scattering from a time-varying undulating sea surface using a full-wavefield multistage algorithm
Xiangyu Meng; Fuxing Han; Jianguo Sun; Mingchen Liu; Zeshuang Xu; Mingyang Lv
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A high-order finite-difference scheme for time-domain modeling of time-varying seismoelectric waves
Yanju Ji; Li Han; Xingguo Huang; Xuejiao Zhao; Kristian Jensen; Yibing Yu
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Using laboratory data to understand how pore aspect ratio influences elastic parameters and amplitude variation with offset
Kamal Moravej; Alison Malcolm
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An explicit method to calculate implicit spatial finite differences
Hongwei Liu; Yi Luo
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Decoupling approximation of P- and S-wave phase velocities in orthorhombic media
Bowen Li; Alexey Stovas
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Seismic Velocities and Traveltimes

Seismic refraction data analysis using machine learning and numerical modeling for characterization of dam construction sites
Rashed Poormirzaee; Babak Sohrabian; Pejman Tahmasebi
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Topography-dependent eikonal tomography based on the fast-sweeping scheme and the adjoint-state technique
Gaoshan Guo; Haiqiang Lan; Xiaole Zhou; Youshan Liu; Umair Bin Waheed; Jingyi Chen
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Migration velocity analysis based on focusing diffractions generated from CRS wavefront attributes: Application to real land data
German Garabito; José Silas dos Santos Silva; Williams Lima
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Nonhyperbolic normal moveout stretch correction with deep learning automation
Mohammad Mahdi Abedi; David Pardo
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Signal Processing

Unsupervised deep learning with higher-order total-variation regularization for multidimensional seismic data reconstruction
Thomas André Larsen Greiner; Jan Erik Lie; Odd Kolbjørnsen; Andreas Kjelsrud Evensen; Espen Harris Nilsen; Hao Zhao; Vasily Demyanov; Leiv-J. Gelius
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Bandwidth-insensitive extended centroid frequency-shift method for near-surface Q estimation
Huijian Li; Xu Liu; Bo Liu; Stewart Greenhalgh; Abdullatif A. Al-Shuhail; Yangkang Chen
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Azimuthal multiple signal classification of dispersive and aliased surface waves recorded in 3D seismic acquisition
Chunying Yang; Wenchuang Wang
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A dictionary learning method for seismic data compression
Mohammed Outhmane Faouzi Zizi; Pierre Turquais
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Extraction of diffractions from seismic data using convolutional U-net and transfer learning
Sooyoon Kim; Soon Jee Seol; Joongmoo Byun; Seokmin Oh
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Deblending based on the frequency-structure weighted threshold: The case of the slope-constrained f-k transform
Siyuan Chen; Siyuan Cao; Yaoguang Sun
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Novel method for detecting weak acoustic emission signals based on the similarity of time-frequency spectra
Wencheng Yang; Xiao Li; Yibo Wang; Yue Zheng; Peng Guo
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Q estimation based on the logarithmic spectral area double difference
Wanli Cheng; Shoudong Wang; Chen Zhou; Liuqing Yang
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Discussions

Comments on: “Imaging the Aquistore reservoir after 36 kilotonnes of CO2 injection using distributed acoustic sensing” (K. Harris, D. J. White, and C. Samson, 2017, Geophysics, 82, no. 6,...
Balazs Nemeth; Christian Escalante
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Reply to comments on “Imaging the Aquistore reservoir after 36 kilotonnes of CO2 injection using distributed acoustic sensing” (K. Harris, D. J. White, and C. Samson, 2017, Geophysics, 82...
Don White; Lisa Roach; Kyle Harris; Doug Angus
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