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Issues
Volume 86, Number 4
July 2021
ISSN 0016-8033
EISSN 1942-2156
In this Issue
Editor's corner
Case Histories
Using diving waves for detecting shallow overburden gas layers
Geophysics June 11, 2021, Vol.86, B237-B247. doi:https://doi.org/10.1190/geo2020-0618.1
Predictive geologic mapping from geophysical data using self-organizing maps: A case study from Baie Verte, Newfoundland, Canada
Geophysics June 15, 2021, Vol.86, B249-B264. doi:https://doi.org/10.1190/geo2020-0756.1
An electrical conductivity model of a coastal geothermal field in southeastern China based on 3D magnetotelluric imaging
Geophysics July 07, 2021, Vol.86, B265-B276. doi:https://doi.org/10.1190/geo2019-0446.1
Anisotropy
Perturbation of phase velocities in elastic orthorhombic media
Geophysics June 15, 2021, Vol.86, C101-C118. doi:https://doi.org/10.1190/geo2020-0820.1
Decoupled approximation and separate extrapolation of P- and SV-waves in transversely isotropic media
Geophysics July 19, 2021, Vol.86, C133-C142. doi:https://doi.org/10.1190/geo2020-0232.1
Borehole Geophysics
Estimation of directional crack density and fluid properties from well logs in vertical wells
Geophysics June 15, 2021, Vol.86, D113-D124. doi:https://doi.org/10.1190/geo2020-0710.1
Estimation of transversely isotropic formation parameters using flexural and quadrupole dispersion data in the fast formation
Geophysics July 12, 2021, Vol.86, D125-D137. doi:https://doi.org/10.1190/geo2019-0567.1
Electrical and Electromagnetic Methods
Solution of large-scale 3D controlled-source electromagnetic modeling problem using efficient iterative solvers
Geophysics June 30, 2021, Vol.86, E283-E296. doi:https://doi.org/10.1190/geo2020-0461.1
A hybrid correlation denoising method based on complex resistivity and application on spread-spectrum induced-polarization data
Geophysics July 01, 2021, Vol.86, E297-E303. doi:https://doi.org/10.1190/geo2018-0813.1
Modeling of triaxial induction logging responses in multilayered anisotropic formations
Geophysics July 02, 2021, Vol.86, E305-E314. doi:https://doi.org/10.1190/geo2020-0475.1
Electrical imaging of hydraulic fracturing fluid using steel-cased wells and a deep-learning method
Geophysics July 08, 2021, Vol.86, E315-E332. doi:https://doi.org/10.1190/geo2020-0178.1
Engineering and Environmental Geophysics
Common-midpoint spatial autocorrelation analysis of seismic ambient noise obtained from a spatially unaliased sensor distribution
Koichi Hayashi; Mitchell Craig; Shunjia Tan; Chisato Konishi; Haruhiko Suzuki; Michitaka Tahara; Kent Falkenstein; Bin He; Daxiang Cheng
Geophysics July 08, 2021, Vol.86, EN51-EN62. doi:https://doi.org/10.1190/geo2020-0467.1
Gravity Exploration Methods
Normalized vertical derivatives in the edge enhancement of maximum-edge-recognition methods in potential fields
Yingjie Zhu; Wanyin Wang; Colin G. Farquharson; Jinming Huang; Minghua Zhang; Min Yang; Dingding Wang
Geophysics June 10, 2021, Vol.86, G23-G34. doi:https://doi.org/10.1190/geo2020-0165.1
Understanding the information content in gravity gradiometry data through constrained inversions for salt bodies
Geophysics July 20, 2021, Vol.86, G35-G53. doi:https://doi.org/10.1190/geo2019-0688.1
3D hybrid imaging based on gravity migration and regularized focusing inversion to predict the Poyang Basin interface
Geophysics July 26, 2021, Vol.86, G55-G67. doi:https://doi.org/10.1190/geo2020-0396.1
Ground-penetrating Radar
Radar imaging of fractures and voids behind the walls of an underground mine
Geophysics July 12, 2021, Vol.86, H27-H41. doi:https://doi.org/10.1190/geo2020-0763.1
Interpretation Methods
ChannelSeg3D: Channel simulation and deep learning for channel interpretation in 3D seismic images
Geophysics June 10, 2021, Vol.86, IM73-IM83. doi:https://doi.org/10.1190/geo2020-0572.1
Mining Geophysics
Electromagnetic radiation interference signal recognition in coal rock mining based on recurrent neural networks
Geophysics June 15, 2021, Vol.86, K1-K10. doi:https://doi.org/10.1190/geo2020-0726.1
Passive Seismic and Microseismic Methods
The general dislocation source model and its application to microseismic focal mechanism inversion
Geophysics June 23, 2021, Vol.86, KS79-KS93. doi:https://doi.org/10.1190/geo2020-0844.1
Reservoir Geophysics
Bayesian rock-physics inversion: Application to CO2 storage monitoring
Geophysics June 30, 2021, Vol.86, M101-M122. doi:https://doi.org/10.1190/geo2020-0218.1
Seismic characterization of fractured reservoirs with elastic impedance difference versus angle and azimuth: A low-frequency poroelasticity perspective
Geophysics July 08, 2021, Vol.86, M123-M139. doi:https://doi.org/10.1190/geo2020-0492.1
Geomechanical stress conditions to induce half-moon events during hydraulic fracturing
Geophysics July 13, 2021, Vol.86, M141-M149. doi:https://doi.org/10.1190/geo2019-0681.1
Fluid and lithofacies prediction based on integration of well-log data and seismic inversion: A machine-learning approach
Geophysics July 19, 2021, Vol.86, M151-M165. doi:https://doi.org/10.1190/geo2020-0521.1
Rock Physics
Organic matter-driven electrical resistivity of immature lacustrine oil-prone shales
Geophysics June 01, 2021, Vol.86, MR165-MR178. doi:https://doi.org/10.1190/geo2020-0238.1
Numerical modeling of multifrequency complex dielectric permittivity dispersion of sedimentary rocks
Geophysics June 10, 2021, Vol.86, MR179-MR190. doi:https://doi.org/10.1190/geo2020-0444.1
Correlations between the static and anisotropic dynamic elastic properties of lacustrine shales under triaxial stress: Examples from the Ordos Basin, China
Geophysics June 15, 2021, Vol.86, MR191-MR202. doi:https://doi.org/10.1190/geo2020-0761.1
Understanding how overpressure affects the physical properties of sandstones
Geophysics June 15, 2021, Vol.86, MR203-MR210. doi:https://doi.org/10.1190/geo2020-0776.1
3D rock minerals by correlating XRM and automated mineralogy and its application to digital rock physics for elastic properties
Geophysics July 08, 2021, Vol.86, MR211-MR222. doi:https://doi.org/10.1190/geo2020-0329.1
Influence of interface condition on reflection of elastic waves in fluid-saturated porous media
Geophysics July 08, 2021, Vol.86, MR223-MR233. doi:https://doi.org/10.1190/geo2020-0624.1
Digital rock physics applied to squirt flow
Geophysics July 13, 2021, Vol.86, MR235-MR245. doi:https://doi.org/10.1190/geo2020-0731.1
Rock-physics constrained seismic anisotropy parameter estimation
Geophysics July 23, 2021, Vol.86, MR247-MR253. doi:https://doi.org/10.1190/geo2019-0153.1
Seismic Amplitude Interpretation
Frequency-dependent AVO analysis: A potential seismic attribute for thin-bed identification
Geophysics July 23, 2021, Vol.86, N1-N17. doi:https://doi.org/10.1190/geo2020-0777.1
Seismic Attributes and Pattern Recognition
Joint learning for spatial context-based seismic inversion of multiple data sets for improved generalizability and robustness
Geophysics July 02, 2021, Vol.86, O37-O48. doi:https://doi.org/10.1190/geo2020-0432.1
Uncertainty and interpretability analysis of encoder-decoder architecture for channel detection
Geophysics July 07, 2021, Vol.86, O49-O58. doi:https://doi.org/10.1190/geo2020-0409.1
Seismic Inversion
A theoretical contribution to the 1D inverse problem of reflection seismograms
Geophysics June 01, 2021, Vol.86, R351-R368. doi:https://doi.org/10.1190/geo2020-0257.1
Progressive transfer learning for low-frequency data prediction in full-waveform inversion
Geophysics June 01, 2021, Vol.86, R369-R382. doi:https://doi.org/10.1190/geo2020-0598.1
Seismic inversion of shale reservoir properties using microseismic-induced guided waves recorded by distributed acoustic sensing
Geophysics June 01, 2021, Vol.86, R383-R397. doi:https://doi.org/10.1190/geo2020-0607.1
Multimodal surface-wave tomography to obtain S- and P-wave velocities applied to the recordings of unmanned aerial vehicle deployed sensors
Geophysics June 10, 2021, Vol.86, R399-R412. doi:https://doi.org/10.1190/geo2020-0703.1
Elastic full-waveform inversion of steeply dipping structures with prismatic waves
Geophysics June 15, 2021, Vol.86, R413-R431. doi:https://doi.org/10.1190/geo2020-0482.1
Challenges in shallow target reconstruction by 3D elastic full-waveform inversion — Which initial model?
Daniela Teodor; Cesare Comina; Farbod Khosro Anjom; Romain Brossier; Laura Valentina Socco; Jean Virieux
Geophysics June 18, 2021, Vol.86, R433-R446. doi:https://doi.org/10.1190/geo2019-0523.1
An adaptive stratified joint PP and PS AVA inversion using accurate Jacobian matrix
Geophysics June 18, 2021, Vol.86, R447-R461. doi:https://doi.org/10.1190/geo2019-0785.1
Full-waveform inversion with source and receiver coupling effects correction
Geophysics June 18, 2021, Vol.86, R463-R470. doi:https://doi.org/10.1190/geo2020-0331.1
Robust AVO inversion for the fluid factor and shear modulus
Geophysics June 23, 2021, Vol.86, R471-R483. doi:https://doi.org/10.1190/geo2020-0234.1
Target-oriented time-lapse waveform inversion using deep learning-assisted regularization
Geophysics June 23, 2021, Vol.86, R485-R495. doi:https://doi.org/10.1190/geo2020-0383.1
A reflection-based efficient wavefield inversion
Geophysics July 01, 2021, Vol.86, R497-R508. doi:https://doi.org/10.1190/geo2019-0664.1
High-resolution seismic acoustic impedance inversion with the sparsity-based statistical model
Geophysics July 01, 2021, Vol.86, R509-R527. doi:https://doi.org/10.1190/geo2020-0345.1
Log-validated waveform inversion of reflection seismic data with wavelet phase and amplitude updating
Geophysics July 02, 2021, Vol.86, R529-R546. doi:https://doi.org/10.1190/geo2020-0374.1
Nonrepeatability effects on time-lapse 4D seismic full-waveform inversion for ocean-bottom node data
Geophysics July 07, 2021, Vol.86, R547-R561. doi:https://doi.org/10.1190/geo2020-0577.1
On cycle-skipping and misfit function modification for full-wave inversion: Comparison of five recent approaches
Geophysics July 07, 2021, Vol.86, R563-R587. doi:https://doi.org/10.1190/geo2020-0851.1
Elastic FWI for orthorhombic media with lithologic constraints applied via machine learning
Geophysics July 13, 2021, Vol.86, R589-R602. doi:https://doi.org/10.1190/geo2020-0512.1
Joint wave-equation traveltime inversion of diving/direct and reflected waves for P- and S-wave velocity macromodel building
Geophysics July 13, 2021, Vol.86, R603-R621. doi:https://doi.org/10.1190/geo2020-0762.1
Generalization of level-set inversion to an arbitrary number of geologic units in a regularized least-squares framework
Geophysics July 20, 2021, Vol.86, R623-R637. doi:https://doi.org/10.1190/geo2020-0263.1
Elastic reflection traveltime inversion with pure-wave propagators
Geophysics July 23, 2021, Vol.86, R639-R658. doi:https://doi.org/10.1190/geo2020-0733.1
Seismic Migration
Fracture detection using scattered waves in the angle domain
Geophysics June 15, 2021, Vol.86, S257-S269. doi:https://doi.org/10.1190/geo2020-0128.1
Vector elastic deconvolution migration with dual wavefield decomposition
Geophysics July 02, 2021, Vol.86, S271-S282. doi:https://doi.org/10.1190/geo2020-0826.1
Q least-squares reverse time migration based on the first-order viscoacoustic quasidifferential equations
Geophysics July 07, 2021, Vol.86, S283-S298. doi:https://doi.org/10.1190/geo2020-0712.1
True amplitude depth migration using curvelets
Geophysics July 12, 2021, Vol.86, S299-S310. doi:https://doi.org/10.1190/geo2019-0307.1
Seismic Modeling and Wave Propagation
Shape-function-based nonuniform Fourier transforms for seismic modeling with irregular grids
Geophysics June 01, 2021, Vol.86, T165-T178. doi:https://doi.org/10.1190/geo2020-0575.1
Eulerian partial-differential-equation methods for complex-valued eikonals in attenuating media
Geophysics June 01, 2021, Vol.86, T179-T192. doi:https://doi.org/10.1190/geo2020-0659.1
Multiscale finite-difference method for frequency-domain acoustic wave modeling
Geophysics June 10, 2021, Vol.86, T193-T210. doi:https://doi.org/10.1190/geo2020-0517.1
Seismic wave modeling in vertically varying viscoelastic media with general anisotropy
Geophysics June 15, 2021, Vol.86, T211-T227. doi:https://doi.org/10.1190/geo2020-0406.1
A numerically exact nonreflecting boundary condition applied to the acoustic Helmholtz equation
Geophysics July 08, 2021, Vol.86, T229-T238. doi:https://doi.org/10.1190/geo2020-0682.1
Nearly constant Q models of the generalized standard linear solid type and the corresponding wave equations
Geophysics July 13, 2021, Vol.86, T239-T260. doi:https://doi.org/10.1190/geo2020-0548.1
Runge-Kutta discontinuous Galerkin method for solving wave equations in 2D isotropic and anisotropic poroelastic media at low frequencies
Geophysics July 13, 2021, Vol.86, T261-T275. doi:https://doi.org/10.1190/geo2020-0707.1
An overset-grid finite-difference algorithm for simulating elastic wave propagation in media with complex free-surface topography
Geophysics July 13, 2021, Vol.86, T277-T292. doi:https://doi.org/10.1190/geo2020-0915.1
Tensorial elastodynamics for anisotropic media
Geophysics July 19, 2021, Vol.86, T293-T303. doi:https://doi.org/10.1190/geo2020-0156.1
Seismic Velocities and Traveltimes
Velocity model building for single-offset VSP data via deformable-layer tomography: A Texas salt dome example
Geophysics June 10, 2021, Vol.86, U63-U73. doi:https://doi.org/10.1190/geo2020-0394.1
Damped wave-equation-based first-arrival traveltime tomography using the embedded boundary method
Geophysics June 18, 2021, Vol.86, U75-U87. doi:https://doi.org/10.1190/geo2020-0233.1
On tomography velocity uncertainty in relation with structural imaging
Geophysics July 19, 2021, Vol.86, U89-U107. doi:https://doi.org/10.1190/geo2020-0603.1
Signal Processing
Effective frequency estimation method for sinusoidal interference in seismic data
Geophysics June 10, 2021, Vol.86, V269-V284. doi:https://doi.org/10.1190/geo2020-0072.1
Generalized cross-dip moveout correction of crooked 2D seismic reflection surveys
Geophysics June 18, 2021, Vol.86, V285-V298. doi:https://doi.org/10.1190/geo2020-0278.1
Automatic seismic phase picking based on unsupervised machine-learning classification and content information analysis
Geophysics June 30, 2021, Vol.86, V299-V315. doi:https://doi.org/10.1190/geo2020-0308.1
Dealiased seismic data interpolation using a deep-learning-based prediction-error filter
Geophysics June 30, 2021, Vol.86, V317-V328. doi:https://doi.org/10.1190/geo2020-0487.1
Nonstationary deconvolutive Radon transform
Geophysics July 08, 2021, Vol.86, V329-V337. doi:https://doi.org/10.1190/geo2020-0771.1
A contrario dip picking for borehole imaging
Joris Costes; Gabriele Facciolo; Rafael Grompone von Gioi; Josselin Kherroubi; Enric Meinhardt-Llopis; Jean-Michel Morel
Geophysics July 12, 2021, Vol.86, V339-V351. doi:https://doi.org/10.1190/geo2020-0392.1
Fast local primary-and-multiple orthogonalization for surface-related multiple leakage estimation and extraction
Geophysics July 13, 2021, Vol.86, V353-V360. doi:https://doi.org/10.1190/geo2020-0420.1
Tutorials and Expository Discussions
Stress-dependent elasticity and wave propagation — New insights and connections
Geophysics July 20, 2021, Vol.86, W47-W64. doi:https://doi.org/10.1190/geo2020-0252.1
Discussions
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