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Volume 72, Number 4
July-August 2007
Geophysics Cover Image for Volume 72, Issue 4
ISSN: 0016-8033
EISSN: 1942-2156

EDITOR’S CORNER

This issue of GEOPHYSICS
Yonghe Sun
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TECHNICAL PAPERS

GEOPHYSICS LETTERS
Waveform inversion by one-way wavefield extrapolation
Jeff Shragge
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CASE HISTORIES
Local high-resolution passive seismic tomography and Kohonen neural networks — Application at the Rio-Antirio Strait, central Greece
G-Akis Tselentis; Anna Serpetsidaki; Nikolaos Martakis; Efthimios Sokos; Paraskevas Paraskevopoulos; Sotirios Kapotas
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ANISOTROPY
A numerical study on reflection coefficients of fractured media
Oliver S. Krüger; Erik H. Saenger; Steven J. Oates; Serge A. Shapiro
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Inversion of P-wave VSP data for local anisotropy: Theory and case study
Vladimir Grechka; Albena Mateeva
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BOREHOLE GEOPHYSICS AND ROCK PROPERTIES
A borehole-model-derived algorithm for estimating QP logs from full-waveform sonic logs
Jorge O. Parra; Pei-cheng Xu; Chris L. Hackert
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Stop-go temperature logging for precision applications
Robert N. Harris; David S. Chapman
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Sonic logging in deviated boreholes penetrating an anisotropic formation: Laboratory study
Zhenya Zhu; Shihong Chi; M. Nafi Toksöz
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Forward modeling of fracture-induced sonic anisotropy using a combination of borehole image and sonic logs
Romain Prioul; Adam Donald; Randy Koepsell; Zakariae El Marzouki; Tom Bratton
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ELECTRICAL AND ELECTROMAGNETIC METHODS
Direct helicopter EM — Sea-ice thickness inversion assessed with synthetic and field data
Andreas Pfaffling; Christian Haas; James E. Reid
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Comparison of an optimized resistivity array with dipole-dipole soundings in karst terrain
Jonathan E. Nyquist; John S. Peake; Mary J. S. Roth
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On the orientation and absolute phase of marine CSEM receivers
Rune Mittet; Odd Marius Aakervik; Hans Roger Jensen; Svein Ellingsrud; Alexey Stovas
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Induced polarization and surface electrochemistry
J. B. Merriam
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Model reliability for 3D electrical resistivity tomography: Application of the volume of investigation index to a time-lapse monitoring experiment
Greg A. Oldenborger; Partha S. Routh; Michael D. Knoll
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Time-lapse ERT monitoring of an injection/withdrawal experiment in a shallow unconfined aquifer
Greg A. Oldenborger; Michael D. Knoll; Partha S. Routh; Douglas J. LaBrecque
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Simulated annealing for airborne EM inversion
Changchun Yin; Greg Hodges
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Multitransient electromagnetic demonstration survey in France
Anton Ziolkowski; Bruce A. Hobbs; David Wright
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ENGINEERING AND ENVIRONMENTAL GEOPHYSICS
Interface prediction ahead of the excavation front by the tunnel-seismic-while-drilling (TSWD) method
Lorenzo Petronio; Flavio Poletto; Andrea Schleifer
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GEOPHYSICAL SOFTWARE AND ALGORITHMS
Computing Gaussian derivative waveforms of any order
Werner M. Heigl
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Efficient FDTD algorithm for plane-wave simulation for vertically heterogeneous attenuative media
Arash JafarGandomi; Hiroshi Takenaka
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GRAVITY EXPLORATION METHODS
A model study for estimating optimum upward-continuation height for gravity separation with application to a Bouguer gravity anomaly over a mineral deposit, Jilin province, northeast China
Hualin Zeng; Deshu Xu; Handong Tan
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Apparent-density mapping using entropic regularization
João B. C. Silva; Francisco S. Oliveira; Valéria C. F. Barbosa; Haroldo F. Campos Velho
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GROUND-PENETRATING RADAR
Multilayer ground-penetrating radar guided waves in shallow soil layers for estimating soil water content
Claudio Strobbia; Giorgio Cassiani
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Improving crosshole radar velocity tomograms: A new approach to incorporating high-angle traveltime data
James D. Irving; Michael D. Knoll; Rosemary J. Knight
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POROELASTICITY
P-wave seismic attenuation by slow-wave diffusion: Numerical experiments in partially saturated rocks
Stefano Picotti; José M. Carcione; J. Germán Rubino; Juan E. Santos
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SEISMIC ATTRIBUTES AND PATTERN RECOGNITION
New fault attribute based on robust directional scheme
Marc Donias; Ciprian David; Yannick Berthoumieu; Olivier Lavialle; Sebastien Guillon; Noomane Keskes
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Application of image segmentation to tracking 3D salt boundaries
Jesse Lomask; Robert G. Clapp; Biondo Biondi
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SEISMIC INVERSION
Seismostratigraphic inversion: Appraisal, ambiguity, and uncertainty
Matthias G. Imhof; Arvind K. Sharma
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Applying compactness constraints to differential traveltime tomography
Jonathan B. Ajo-Franklin; Burke J. Minsley; Thomas M. Daley
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SEISMIC MIGRATION
Wide-angle phase-slowness approximations in VTI media
Ørjan Pedersen; Bjørn Ursin; Alexey Stovas
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Zero-offset seismic amplitude decomposition and migration
Bjørn Ursin; Martin Tygel
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SEISMIC MODELING AND WAVE PROPAGATION
3D ray tracing using a modified shortest-path method
Chao-ying Bai; Stewart Greenhalgh; Bing Zhou
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Physical modeling of overburden effects
Mu Luo; Mamoru Takanashi; Kazuo Nakayama; Teruya Ezaka
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VSP wavefield separation: Wave-by-wave optimization approach
Emil Blias
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SEISMIC VELOCITY/STATICS
Seabed property estimation from ambient-noise recordings: Part 2 — Scholte-wave spectral-ratio inversion
Everhard Muyzert
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Full-waveform static corrections using blind channel identification
Robbert van Vossen; Jeannot Trampert
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SIGNAL PROCESSING
Improving the virtual source method by wavefield separation
Kurang Mehta; Andrey Bakulin; Jonathan Sheiman; Rodney Calvert; Roel Snieder
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Attenuation of seismic water-column noise, tested on seismic data from the Grane field
M. Landrø
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TUTORIALS AND EXPOSITORY DISCUSSIONS
The solution of nonlinear inverse problems and the Levenberg-Marquardt method
Jose Pujol
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DEPARTMENTS

DISCUSSIONS
Comment on “Permeability prediction from MICP and NMR data using an electrokinetic approach” (P. W. J. Glover, I. I. Zadjali, and K. A. Frew, 2006, GEOPHYSICS, 71, no. 4, F49–F60)
A. Revil
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Reply to comment
A. Revil; P. W. J. Glover
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ERRATA
“Frequency-dependent attenuation analysis of ground-penetrating radar data,” John H. Bradford, GEOPHYSICS, 72, no. 3, J7–J16
John H. Bradford
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INTELLECTUAL PROPERTY
Intellectual Property
David A. Walker
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CONTRIBUTORS
Contributors
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All Issues
  • Online ISSN 1942-2156
  • ISSN 0016-8033
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