PUBLICATIONS, BY YEAR

      2015

      Access to PDF allowed Full waveform inversion in the frequency domain using direct iterative T-matrix methods
      Morten Jakobsen and Bjørn Ursin
      J. Geophys. Eng, 2015, Volume 12, 400-418
      Abstract   Full Text:  [  PDF  ]  



      2014

      Access to PDF allowed Reconstruction of a conformally Euclidian metric from local boundary diffraction travel times
      Maarten V. de Hoop, Sean F. Holman, Einar Iversen, Matti Lassas, and Bjørn Ursin
      SIAM J. Math. Anal., 2014, Volume 46, 3705-3726
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Signal and traveltime parameter estimation using singular value decomposition
      Bjørn Ursin, Michelângelo G. Silva, and Milton J. Porsani
      Geophysics, 2014, Volume 79, no. 5, U1-U14
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Fresnel volume and interface Fresnel zone for reflected and transmitted waves from a curved interface in anisotropic media
      Bjørn Ursin, Nathalie Favretto-Cristini, and Paul Cristini
      Geophysics, 2014, Volume 79, no. 5, C123-C134
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Numerical modeling of zero-offset laboratory data in a strong topographic environment: Results for a spectral-element method and a discretized Kirchhoff integral method
      Nathalie Favretto-Cristini, Anastasiya Tantsereva, Paul Cristini, Bjørn Ursin, Dimitri Komatitsch, and Arkady M. Aizenberg
      Earthquake Science, 2014, Volume 27, Issue 4, pp 391-399
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Numerical modeling of 3D zero-offset laboratory data by a discretized Kirchhoff integral method
      Anastasiya Tantsereva, Bjørn Ursin, Nathalie Favretto-Cristini, Paul Cristini, and Arkady M. Aizenberg
      Geophysics, 2014, Volume 79, no. 2, T77-T90
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Estimation of seafloor electromagnetic receiver orientation
      Lutz Mütschard, Ketil Hokstad, and Bjørn Ursin
      Geophysics, 2014, Volume 79, no. 2, E81-E89
      Abstract   Full Text:  [  PDF  ]  


      2013

      Access to PDF allowed Dip-adaptive singular-value decomposition filtering for seismic reflection enhancement
      Milton J. Porsani, Bjørn Ursin, Michelangelo G. Silva, and Paulo E. M. Melo
      Geophysical Prospecting, 2013, Volume 61, no. 1, 42-52
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Dynamic estimation of reflectivity by minimum-delay seismic trace decomposition
      Milton J. Porsani, Bjørn Ursin, and Michelangelo G. Silva
      Geophysics, 2013, Volume 78, no. 3, V109-V117
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed 2.5D EM modelling in TIV conductive media and the effect of anisotropy in normalized amplitude responses
      Torgeir Wiik, Bjørn Ursin, and Ketil Hokstad
      Journal of Geophysics and Engineering, 2013, Volume 10, 015006
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Shot-profile true amplitude crosscorrelation imaging condition
      Børge Arntsen, Alexander Kritski, Bjørn Ursin, and Lasse Amundsen
      Geophysics, 2013, Volume 78, no. 4, S221-S231
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Three-dimensional non-stationary and non-linear isotropic AVA inversion
      Erlend Aune, Jo Eidsvik, and Bjørn Ursin
      Geophysical Journal International, 2013, Volume 194, no. 2, 787-803
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Joint contrast source inversion of marine magnetotelluric and controlled-source electromagnetic data
      Torgeir Wiik, Ketil Hokstad, Bjørn Ursin, and Lutz Mütschard
      Geophysics, 2013, Volume 78, no. 6, E315-E327
      Abstract   Full Text:  [  PDF  ]  


      2012

      Access to PDF allowed Estimation of geological dip and curvature from time-migrated zero-offset reflections in heterogeneous anisotropic media
      Martin Tygel, Bjørn Ursin, Einar Iversen, and Maarten V. de Hoop
      Geophysical Prospecting, 2012, Volume 60, no. 2, 201-216
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Estimation of geological dip and reflector curvature from zero-offset seismic reflections in heterogeneous anisotropic media
      Martin Tygel, Bjørn Ursin, Einar Iversen, and Maarten V. de Hoop
      Studia geophysica et geodaetica, 2012, Volume 56, Issue 2, 521-531
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Flux-normalized wavefield decomposition and migration of seismic data
      Bjørn Ursin, Pedersen Ørjan, and Børge Arntsen.
      Geophysics, 2012, Volume 77, no. 3, S83-S92
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed High-resolution bootstrapped differential semblance
      Brahin Abbad and Bjørn Ursin
      Geophysics, 2012, Volume 77, no. 3, U39-U47
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Kinematic time migration and demigration of reflections in pre-stack seismic data
      Iversen Einar, Martin Tygel, Bjørn Ursin, and Maarten V. de Hoop
      Geophysical Journal International, 2012, Volume 189, no. 3, 1635-1666
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Rapid expansion and pseudo spectral implementation for reverse time migration in VTI media
      Reynam C. Pestana, Bjørn Ursin, and Paul L. Stoffa
      Journal of Geophysics and Engineering, 2012, Volume 9, 291-301
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Laboratory benchmarks vs. Synthetic modeling of seismic wave propagation in complex environments (BENCHIE Project): Results for a spectral-element method and the Tip Wave Superposition Method
      Paul Cristini, Nathalie Favretto-Cristini, Anastasia Tantsereva, Bjørn Ursin, Arkady Aizenberg, and Dimitri Komatitsch
      Proceedings in Meetings on Acoustics, 2012, Volume 17, 070024
      Abstract   Full Text:  [  PDF  ]  


      2011

      Access to PDF allowed TIV contrast source inversion of mCSEM data
      Torgeir Wiik, Lars O. Løseth, Bjørn Ursin, and Ketil Hokstad
      Geophysics, 2011, Volume 76, no. 1, F65-F76
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed A fast, modified parabolic Radon transform
      Brahim Abbad, Bjørn Ursin, and Milton J. Porsani
      Geophysics, 2011, Volume 76, no. 1, V11-V24
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Recursive imaging with multiply scattered waves using partial image regularization: A North Sea case study
      Alison E. Malcolm, Maarten V. de Hoop, and Bjørn Ursin
      Geophysics, 2011, Volume 76, no. 2, B33-B42
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed AVA inversion of the top Utsira Sand reflection at the Sleipner field
      Tor E. Rabben, and Bjørn Ursin
      Geophysics, 2011, Volume 76, no. 3, C53-C63
      Abstract   Full Text:  [  PDF  ]  



      2010

      Access to PDF allowed SVD filtering applied to ground-roll attenuation
      Milton J. Porsani, Michelângelo G. Silva, Paulo E. M. Melo, and Bjørn Ursin
      Journal of Geophysics and Engineering, 2010, Volume 7, 284-289
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Illumination analysis of wave-equation imaging with curvelets
      Shen Wang, Maarten V. de Hoop, and Bjørn Ursin
      Inverse Problems, 2010, Volume 26, 115013 (27 pp)
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed PP/PS anisotropic stereotomography
      Steinar Nag, Mathias Alerini, and Bjørn Ursin
      Geophysical Journal International, 2010, Volume 181, 427-452
      Abstract   Full Text:  [  PDF    HTML  ]  

      Access to PDF allowed Seismic imaging using lateral adaptive windows
      Ørjan Pedersen, Sverre Brandsberg-Dahl, and Bjørn Ursin
      Geophysics, 2010, Volume 75, S73-S79
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Zero- and first-order approximations for least-squares estimation of seismic signal with coherent and random noise
      Yuriy Tyapkin, Bjørn Ursin, Herve Perroud, Olena Silinska, and Olena Tiapkina
      Journal of Geophysics and Engineering, 2010, Volume 7, 51-63
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Automatic nonhyperbolic velocity analysis, GEOPHYSICS, 74, no. 2, U1-U12.
      Brahim Abbad, Bjørn Ursin, and Didier Rappin
      Geophysics, 2010, Volume 75, no. 6, Y3-Y3
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed One-way wave-equation migration of compressional and converted waves in a VTI medium
      Ørjan Pedersen, Bjørn Ursin, and Hans-K. Helgesen
      Geophysics, 2010, Volume 75, no. 6, S237-S248
      Abstract   Full Text:  [  PDF  ]  



      2009

      Access to PDF allowed ROSE – Rock physics and seismic research at the Norwegian University of Science and Technology
      Martin Landrø, Rune M. Holt, and Bjørn Ursin
      Exploration & Production: Oil and Gas Review, 2009, Volume 7, no. 2, 48-50
      Full Text:  [  HTML  ]  

      Access to PDF allowed Effective reflection coefficients for curved interfaces in transversely isotropic media
      Milana Ayzenberg, Ilya Tsvankin, Arkady Aizenberg, and Bjørn Ursin
      Geophysics, 2009, Volume 74, WB33-WB53
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Improved geometric-spreading approximation in layered transversely isotropic media
      Alexey Stovas and Bjørn Ursin
      Geophysics, 2009, Volume 74, D85-D95
      Abstract   Full Text:  [  PDF ]  

      Access to PDF allowed SS-traveltime parameters from PP and PS reflections
      Bjørn Ursin, Martin Tygel, and Einar Iversen
      Geophysics, 2009, Volume 74, R35-R47
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Automatic nonhyperbolic velocity analysis
      Brahim Abbad, Bjørn Ursin, and Didier Rappin
      Geophysics, 2009, Volume 74, U1-U12
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Adaptive focusing window for seismic angle migration
      Mathias Alerini and Bjørn Ursin
      Geophysics, 2009, Volume 74, S1-S10
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Tip-wave superposition method with effective reflection and transmission coefficients: A new 3D Kirchhoff-based approach to synthetic seismic modeling
      Milana Ayzenberg, Arkady M. Aizenberg, and Bjørn Ursin
      The Leading Edge, 2009, Volume 28, 582-588
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Seismic imaging and illumination with internal multiples
      Alison E. Malcolm, Bjørn Ursin, and Maarten V. de Hoop
      Geophysical Journal International, 2009, Volume 176, 847-864
      Abstract   Full Text:  [  PDF    HTML  ]  

      Access to PDF allowed A new stabilized least-squares imaging condition
      Flor A. Vivas, Reynam C. Pestana, and Bjørn Ursin
      Journal of Geophysics and Engineering, 2009, Volume 6, 264-268
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Frequency attenuation and resolution of seismic data receive the full treatment at research workshop
      Christian Deplante and Bjørn Ursin
      First Break, 2009, Volume 27, no. 11, 9-12
      Full Text:  [  HTML  ]  


      2008

      Access to PDF allowed Nonlinear Bayesian joint inversion of seismic reflection coefficients
      Tor E. Rabben, Håkon Tjelmeland, and Bjørn Ursin.
      Geophysical Journal International, 2008, Volume 173, 265-280
      Abstract   Full Text:  [  PDF    HTML  ]  

      Access to PDF allowed Elastic nonlinear amplitude versus angle inversion and data-driven depth imaging in stratified media derived from inverse scattering approximations
      Lasse Amundsen, Arne Reitan, Børge Arntsen, and Bjørn Ursin
      Inverse Problems, 2008, Volume 24, 23 pp.
      Abstract   Full Text:  [  PDF  ]  


      2007

      Access to PDF allowed Direct multichannel predictive deconvolution
      Milton J. Porsani and Bjørn Ursin
      Geophysics, 2007, Volume 72, H11-H27
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Convergence of traveltime power series for a layered VTI medium
      Martin Tygel, Bjørn Ursin, and Alexey Stovas
      Geophysics, 2007, Volume 72, D21-D28
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Estimation of layer parameters for linear P- and S-wave velocity functions
      Alexey Stovas and Bjørn Ursin
      Geophysics, 2007, Volume 72, U27-U30
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Wide-angle phase-slowness approximations in VTI media
      Ørjan Pedersen, Bjørn Ursin, and Alexey Stovas
      Geophysics, 2007, Volume 72, S177-S185
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Zero-offset seismic amplitude decomposition and migration
      Bjørn Ursin and Martin Tygel
      Geophysics, 2007, Volume 72, S187-S193
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Cross-property relations between electrical conductivity and the seismic velocity of rocks
      José M. Carcione, Bjørn Ursin, and Janniche I. Nordskag
      Geophysics, 2007, Volume 72, E193-E204
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed 3D diffraction modeling of singly scattered acoustic wavefields based on the combination of surface integral propagators and transmission operators
      Milana A. Ayzenberg, Arkady M. Aizenberg, Hans B. Helle, Kamill D. Klem-Musatov, Jan Pajchel, and Bjørn Ursin
      Geophysics, 2007, Volume 72, SM19-SM34
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Electromagnetic fields in planarly layered anisotropic media
      Lars O. Løseth and Bjørn Ursin
      Geophysical Journal International, 2007, Volume 170, Issue 1, 44-80
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Equivalent time-average and effective medium for periodic layers
      Alexey Stovas and Bjørn Ursin
      Geophysical Prospecting, 2007, Volume 55, 871-882
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Sensitivity of Dix-type inverse formulae
      Jon André Haugen, Bjørn Ursin, and Alexey Stovas
      Journal of Geophysics and Engineering, 2007, Volume 4, 404-414
      Abstract   Full Text:  [  PDF  ]  


      2006

      Access to PDF allowed On "Divergent and asymptotic nature of the time-offset Taner-Koehler series in reflection seismics" (Santi Kumar Ghosh and Prakash Kumar, 2002, GEOPHYSICS, 67, 1913-1919)
      Martin Tygel and Bjørn Ursin
      Geophysics, 2006, Volume 71, X13-X14
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Acoustic nonlinear amplitude versus angle inversion and data-driven depth imaging in stratified media derived from inverse scattering approximations
      Lasse Amundsen, Arne Reitan, Børge Arntsen, and Bjørn Ursin
      Inverse Problems, 2006, Volume 22, 1921-1945
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Decomposition of electromagnetic fields into upgoing and downgoing components
      Lasse Amundsen, Lars Løseth, Rune Mittet, Svein Ellingsrud, and Bjørn Ursin
      Geophysics, 2006, Volume 71, G211-G223
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Low-frequency electromagnetic fields in applied geophysics: Waves or diffusion?
      Lars O. Løseth, Hans M. Pedersen, Bjørn Ursin, Lasse Amundsen, and Svein Ellingsrud
      Geophysics, 2006, Volume 71, W29-W40
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Parameter estimation for a linear velocity function
      Alexey Stovas and Bjørn Ursin
      Russian Geology and Geophysics, 2006, Volume 47, 586-590

      Access to PDF allowed Traveltime approximations for a layered transversely isotropic medium
      Bjørn Ursin and Alexey Stovas
      Geophysics, 2006, Volume 71, D23-D33
      Abstract   Full Text:  [  PDF  ]  


      2005

      Access to PDF allowed Generalized Dix equations for a layered transversely isotropic medium
      Bjørn Ursin and Alexey Stovas
      Geophysics, 2005, Volume 70, D77-D81
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Depth-consistent reflection tomography using PP and PS seismic data
      Stig-Kyrre Foss, Bjørn Ursin, and Maarten V. de Hoop
      Geophysics, 2005, Volume 70, U51-U65
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Optimum stacking of seismic records with irregular noise
      Yuriy Tyapkin and Bjørn Ursin
      Journal of Geophysics and Engineering, 2005, Volume 2, 177-187
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Seismic angle tomography
      Bjørn Ursin, Maarten V. de Hoop, Stig-Kyrre Foss, and Sverre Brandsberg-Dahl
      The Leading Edge, 2005, Volume 24, Issue 6, pp. 628-634
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Seismic angle migration
      Bjørn Ursin, Maarten V. de Hoop, Sverre Brandsberg-Dahl, and Anders Sollid
      The Leading Edge, 2005, Volume 24, Issue 6, pp. 637-640
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Linearized 2.5-dimensional parameter imaging inversion in anisotropic elastic media
      Stig-Kyrre Foss, Maarten V. de Hoop, Bjørn Ursin
      Geophysical Journal International, 2005, Volume 161, Issue 3, pp. 722-738
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Comparison of seismic attenuation models using zero-offset vertical seismic profiling (VSP) data
      Tommy Toverud and Bjørn Ursin
      Geophysics, 2005, Volume 70, Issue 2, pp. F17-F25
      Abstract   Full Text:  [  PDF  ]  


      2004

      Access to PDF allowed A practical approach to PP seismic angle tomography
      Stig-Kyrre Foss, Bjørn Ursin and Anders Sollid
      Geophysical Prospecting, 2004, Volume 52,  Issue 6, pp. 663-669
      Abstract   Full Text: [ PDF   Full text article  ]  

      Access to PDF allowed Parameter inversion and angle migration in anisotropic elastic media
      Bjørn Ursin
      Geophysics, 2004, Volume 69,  Issue 5, pp. 1125-1142
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed 2.5D modelling, inversion and angle migration in anisotropic elastic media
      Stig-Kyrre Foss and Bjørn Ursin
      Geophysical Prospecting, 2004, Volume 52,  Issue 1, pp. 65-84
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed New travel-time approximations for a transversely isotropic medium
      Alexey Stovas and Bjørn Ursin
      J. Geophys. Eng., 2004, Volume 1, pp. 128-133
      Abstract   Full Text: [ PDF ]  


      2003

      Access to PDF allowed Geometrical spreading in a layered transversely isotropic medium with vertical symmerty axis
      Bjørn Ursin and Ketil Hokstad
      Geophysics, 2003, Volume 68,  Issue 6, pp. 2082-2091
      Abstract   Full Text: [ PDF ]  

      Access to PDF allowed Focusing in dip and AVA compensation on scattering-angle/azimuth common image gathers
      Sverre Brandsberg-Dahl, Maarten V. de Hoop and Bjørn Ursin
      Geophysics, 2003, Volume 68,  Issue 1, pp. 232-254
      Abstract   Full Text: [ PDF ]  

      Access to PDF allowed Scattering-angle migration of ocean-bottom seismic data in weakly anisotropic media
      Anders Sollid and Bjørn Ursin
      Geophysics, 2003, Volume 68,  Issue 2, pp. 641-655
      Abstract   Full Text: [  PDF ]  

      Access to PDF allowed Combined seismic inversion and gravity modeling of a shallow anomaly in the southern Barents Sea
      Bjørn Ursin, Christian Bauer, Huasheng Zhao, and Christine Fichler
      Geophysics, 2003, Volume 68,  Issue 4, pp. 1140-1149
      Abstract   Full Text: [  PDF ]  

      Access to PDF allowed Reflection and transmission responses of layered transversely isotropic viscoelastic media
      Alexey Stovas and Bjørn Ursin
      Geophysical Prospecting, 2003, Volume 51,  Issue 5, pp. 447-477
      Abstract   Full Text: [  PDF   HTML  ]  

      Access to PDF allowed Seismic velocity analysis in the scattering-angle/azimuth domain
      Sverre Brandsberg-Dahl, Bjørn Ursin, and Maarten V. de Hoop
      Geophysical Prospecting, 2003, Volume 51,  Issue 4, pp. 295-314
      Abstract   Full Text: [  PDF   Full text article  ]  

      Access to PDF allowed Comments on comparison of seismic dispersion and attenuation models by Ursin, B., and Toverud, T., Stud. Geophys, Geod. 46, 293-320.
      Bjørn Ursin and Tommy Toverud
      Studia geophysica et geodaetica, 47, 2003, 217-219
      Abstract   Full Text: [  PDF  ]  



      2002

      Access to PDF allowed Reflection and transmission responses of a layered isotropic viscoelastic medium
      Bjørn Ursin and Alexey Stovas
      Geophysics, 2002, Volume 67, pp. 307-323
      Abstract   Full Text: [  PDF ]  
      Access to PDF allowed Wave velocities and attenuation of shaley sandstones as a function of pore pressure and partial saturation
      Nam H. Pham, José M. Carcione, Hans B. Helle and Bjørn Ursin
      Geophysical Prospecting, 2002, Volume 50,  Issue 6, pp. 615-627
      Abstract   Full Text: [  PDF   Full text article  ]  
      Access to PDF allowed Out-of-plane geometrical spreading in anisotropic media
      Norman Ettrich, Anders Sollid and Bjørn Ursin
      Geophysical Prospecting, 2002, Volume 50,  Issue 4, pp. 383-392
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Prediction of reservoir variables based on seismic data and well observations
      Alfhild L. Eide, Henning Omre, and Bjørn Ursin
      Journal of the American Statistical Association, 97, 2002, 18-28.
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Comparison of seismic dispersion and attenuation models
      Bjørn Ursin and Tommy Toverud
      Studia geophysica et geodaetica, 46, 2002, 293-320
      Abstract   Full Text: [  PDF  ]  



      2001

      Access to PDF allowed Porosity and permeability prediction from wireline logs using artificial neural networks: a North Sea case study
      Hans B. Helle, Alpana Bhatt, and Bjørn Ursin
      Geophysical Prospecting, 2001, Volume 49,  Issue 4, pp. 431-444
      Abstract   Full Text: [ PDF   Full text article  ]  

      Access to PDF allowed The Kirchhoff-Helmholtz integral for anisotropic elastic media
      Jörg Schleicher, Martin Tygel, Bjørn Ursin, and Norman Bleistein
      Wave motion, Volume 34, 2001, 353-364
      SummaryPlus | Full Text + Links | PDF

      Access to PDF allowed Comparison of deconvolution methods for scaling reflectivity
      Tommy Toverud, Vijay P. Dimri, and Bjørn Ursin
      J. of Geophys., 22, 2001, 117-123

      Access to PDF allowed Second-order approximations of the reflection and transmission coefficients between two visco-elastic isotropic media
      Alexey Stovas and Bjørn Ursin
      J. Seism. Expl., 9, 2001, 223-233
      Full Text:  [  PDF  ]



      2000

      Access to PDF allowed Mixed-phase deconvolution and wavelet estimation
      Milton J. Porsani and Bjørn Ursin
      The Leading Edge, 2000, Volume 19, pp. 76-79
      Abstract   Full Text: [  PDF ]  

      Access to PDF allowed Estimation of an optimal mixed-phase inverse filter
      Bjørn Ursin and Milton J. Porsani
      Geophysical Prospecting, 2000, Volume 48,  Issue 4, pp. 663-676
      Abstract   Full Text: [  PDF (1234 kB)   Full text article  ]  

      Access to PDF allowed Viscoacoustic reverse-time migration
      Emmanuel Causse and Bjørn Ursin
      J. Seism. Expl., 9, 2000, 165-184
      Full Text:  [  PDF  ]



      1999

      Access to PDF allowed Model-based removal of water-layer multiple reflections
      Guochun Lu, Bjørn Ursin, and Jan Lutro
      Geophysics, 1999, Volume 64, pp. 1816-1827
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Asymptotic error analysis of constant-velocity viscoacoustic migration
      Emmanuel Causse and Bjørn Ursin
      Geophysics, 1999, Volume 64, pp. 1036-1045
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed True-amplitude frequency-wavenumber constant-offset migration
      Bjørn O. Ekren and Bjørn Ursin
      Geophysics, 1999, Volume 64, pp. 915-924
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Preconditioning of full-waveform inversion in viscoacoustic media
      Emmanuel Causse, Rune Mittet, and Bjørn Ursin
      Geophysics, 1999, Volume 64, pp. 130-145
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Weak-contrast edge and vertex diffractions in anisotropic elastic media
      Martin Tygel and Bjørn Ursin
      Wave motion, 1999, Volume 29, pp. 363-373
      SummaryPlus | Full Text + Links | PDF



      1998

      Access to PDF allowed Mixed-phase deconvolution
      Milton J. Porsani and Bjørn Ursin
      Geophysics, 1998, Volume 63, pp. 637-647
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Thin-bed AVO effects
      Nils E. Bakke and Bjørn Ursin
      Geophysical Prospecting, 1998, Volume 46,  Issue 6, pp. 571-587
      Abstract   Full Text: [  PDF (1829 kB)   Full text article  ]  



      1997

      Access to PDF allowed Methods for estimating the seismic reflection response
      Bjørn Ursin
      Geophysics, 1997, Volume 62, pp. 1990-1995
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Reciprocal volume and surface scattering integrals for anisotropic elastic media
      Bjørn Ursin and Martin Tygel
      Wave motion, 1997, Volume 26, pp. 31-42
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed A unified Born-Kirchhoff representation for acoustic media
      Amélia Novais, Lúcio T. Santos, Martin Tygel, and Bjørn Ursin
      J. Seismic Exploration, 1997, Volume 6, pp. 217-226
      Full Text:  [  PDF  ]



      1996

      Access to PDF allowed Wave series expansion for a stratified fluid
      Lúcio T. Santos, Bjørn Ursin, and Martin Tygel
      Russian Geology and Geophysics, 1996, 37, 9, pp. 23-45

      Access to PDF allowed Elastic properties of rocks with fracture-induced anisotropy
      Haugen, G.U., and Ursin, B.
      In Fjær, E., Holt, R.M., and Rathore, J.S., eds., 1996, Seismic anisotropy. SEG, Tulsa, 1996, pp. 357-383

      Access to PDF allowed Weak-contrast approximation of the elastic scattering matrix in anisotropic media
      Haugen, G.U., and Ursin, B.
      Pure and Applied Geophysics, 1996, Volume 148, pp. 685-714
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Reflectivity/transmissivity for one-dimensional inhomogeneous random elastic media: dynamic-equivalent-medium approach
      Shapiro, S.A., Hubral, P., and Ursin, B.
      Geophysical Journal International, 1996, Volume 126, pp. 184-196
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Linearized elastic parameter sections
      Ursin, B., Ekren, B.O., and Tjåland, E.
      Geophysical Prospecting, 1996, Volume 44, pp. 427-455
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed The information content of the elastic reflection matrix
      Ursin, B. and Tjåland, E.
      Geophysical Journal International, 1996, Volume 125, pp. 214-228
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Seismic reflection estimation with coloured noise
      Ursin, B., de Matos Neto, J.B., and Porsani, M.J.
      J. Seismic Exploration 1996, Volume 5, pp. 51-62
      Full Text:  [  PDF  ]



      1995

      Access to PDF allowed Migração de ondas planas em meios lateralmente heterogêneous
      Pestana, R., Chaves, R.D., and Ursin, B.
      Revista Brasileira de Geofísica 1995, 13, 237-248

      Access to PDF allowed Robust AVO analysis
      Bjørn Ursin and Bjørn Olav Ekren
      Geophysics, 1995, Volume 60, pp. 317-326
      Abstract   Full Text: [  PDF  ]  


      1994

      Access to PDF allowed Frequency-wavenumber elastic inversion of marine seismic data
      Huasheng Zhao, Bjørn Ursin, and Lasse Amundsen
      Geophysics, 1994, Volume 59, pp. 1868-1881
      Abstract   Full Text: [  PDF  ]  


      1993

      Access to PDF allowed Estimation of reflection coefficients from zero-offset field data
      Børge Arntsen and Bjørn Ursin
      Geophysics, 1993, Volume 58, pp. 1634-1645
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed The accuracy of linearized elastic parameter estimation
      Ursin, B., and Tjåland, E.
      J. of Seismic Exploration 1993, Volume 2, pp. 349-363
      Full Text:  [  PDF  ]



      1992

      Access to PDF allowed Seismic reflection amplitudes
      Ursin, B., and Dahl, T.
      Geophysical Prospecting, 1992, Volume 40, pp. 483-512
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Non-linear AVO inversion for a stack of anelastic layers
      Dahl, T., and Ursin, B.
      Geophysical Prospecting, 1992, Volume 40, pp. 243-265
      Abstract   Full Text: [  PDF  ]  



      1991

      Access to PDF allowed Parameter estimation in a one-dimensional anelastic medium
      Dahl. T., and Ursin, B.
      J. of Geophys. Res. 1991, 96, B12, pp. 20217-20233
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Frequency-wavenumber inversion of acoustic data
      L. Amundsen and B. Ursin
      Geophysics, 1991, Volume 56, pp. 1027-1039
      Abstract   Full Text: [  PDF  ]  



      1990

      Access to PDF allowed Geophysical data inversion - methods and applications
      Ofoegbu, C., Vogel, A., Ursin, B., and Gorenflo, R., (eds.)
      Fried. Vieweg & Sohn, Wiesbaden, 1990

      Access to PDF allowed Offset-dependent geometrical spreading in a layered medium
      Bjørn Ursin
      Geophysics, 1990, Volume 55, pp. 492-496
      Abstract   Full Text: [  PDF  ]  



      1988

      Access to PDF allowed Detection of zero-offset seismic reflections
      Landrø, M., and Ursin, B.
      First Break 6, 1988, pp. 385-394
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed The spectral function of a vertically inhomogeneous medium
      Bjørn Ursin
      Geophysical Prospecting, 1988, Volume 36, pp. 1-5
      Abstract   Full Text: [  PDF  ]  



      1987

      Access to PDF allowed On: "When reflection coefficients are zero," by F. K. Levin (GEOPHYSICS, 51, 736–741, March 1986).
      Bjørn Ursin
      Geophysics, 1987, Volume 52, p. 372
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Computation of signatures of linear airgun arrays
      Vaage, S., and Ursin, B.
      Geophysical Prospecting 1987, Volume 35, pp. 281-287
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed The plane-wave reflection and transmission response of a vertically inhomogeneous acoustic medium
      Bjørn Ursin
      In Bernabini, M., Carrion, P., Jacovitti, G., Rocca, F., Treitel, S., and Worthington, M., eds.,
      1987, Deconvolution and inversion. Blackwell Sc. Publ., Oxford, 1987, pp. 189-207
      Full Text:  [  PDF  ]



      1986

      Access to PDF allowed Complete inversion of zero-offset seismic data
      Bjørn Ursin
      Geophysical Prospecting, 1986, Volume 34, pp. 1213-1218
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Zero-offset reflections from a curved interface
      Bjørn Ursin
      Geophysics, 1986, Volume 51, pp. 50-53
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Comparison of some inverse methods for wave propagation in layered media
      Bjørn Ursin and Karl-Andreas Berteussen
      The Proceedings of the IEEE 74, 1986, pp. 389-400
      Abstract   Full Text: [  PDF  ]  



      1985

      Access to PDF allowed Identification of seismic reflections using singular value decomposition
      Ursin, B., and Zheng, Y.
      Geophysical Prospecting, 1985, Volume 33, pp. 773-799. (Reprinted in Modeling, Identification and Control 7, 1-23.)
      Abstract   Full Text:  [  PDF    Reprint  ]  

      Access to PDF allowed Maximum likelihood estimation of seismic impulse responses
      Ursin, B., and Holberg, O.
      Geophysical Prospecting, 1985, Volume 33, pp. 233-251. (Reprinted in Modeling, Identification and Control 6, 57-73.)
      Abstract   Full Text:  [  PDF    Reprint  ]  

      Access to PDF allowed Computation of zero-offset vertical seismic profiles including geometrical spreading and absorption
      Ursin, B., and Arntsen, B.
      Geophysical Prospecting 1985, Volume 33, pp. 72-96
      Abstract   Full Text:  [  PDF  ]  



      1984

      Access to PDF allowed Seismic migration using the WKB approximation
      Bjørn Ursin
      The Geophys. J. of the Royal Astr. Soc. 1984, Volume 79, pp. 339-352
      Abstract   Full Text:  [  PDF  ]  

      Access to PDF allowed Traveltime and wavefront curvature calculations in three-dimensional inhomogeneous layered media with curved interfaces
      H. Gjøystdal, J. E. Reinhardsen, and B. Ursin
      Geophysics, 1984, Volume 49, pp. 1466-1494
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Reply to Further comment on "Interaction between airguns".
      Vaage, S., Ursin, B., and Haugland, K.
      Geophysical Prospecting, 1986, Volume 34, pp. 942-945
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Reply to Comment on "Interaction between airguns".
      Vaage, S., Ursin, B., and Haugland, K.
      Geophysical Prospecting, 1985, Volume 33, pp. 1067
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Interaction between airguns
      Vaage, S., Ursin, B., and Haugland, K.
      Geophysical Prospecting, 1984, Volume 32, pp. 676-689
      Abstract   Full Text: [  PDF  ]  



      1983

      Access to PDF allowed Spatial filtering of marine seismic data
      Bjørn Ursin
      Geophysics, 1983, Volume 48, pp. 1611-1630
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Approximate computation of the acoustic impedance from seismic data
      Karl-Andreas Berteussen and Bjørn Ursin
      Geophysics, 1983, Volume 48, pp. 1351-1358
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Review of elastic and electromagnetic wave propagation in horizontally layered media
      Bjørn Ursin
      Geophysics, 1983, Volume 48, pp. 1063-1081
      Abstract   Full Text: [  PDF  ]  



      1982

      Access to PDF allowed A new derivation of the wavefront curvature transformation at an interface between two inhomogeneous media
      Bjørn Ursin
      Geophysical Prospecting, 1982, Volume 30, pp. 569-579
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Time-to-depth migration using wavefront curvature
      Bjørn Ursin
      Geophysical Prospecting, 1982, Volume 30, pp. 261-280
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Quadratic wavefront and traveltime approximations in inhomogeneous layered media with curved interfaces
      Bjørn Ursin
      Geophysics, 1982, Volume 47, pp. 1012-1021
      Abstract   Full Text: [  PDF  ]  



      1981

      Access to PDF allowed Error estimates for inverse modeling schemes using seismic traveltimes
      Bjørn Ursin
      Geophysics, 1981, Volume 46, pp. 1227-1234
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Inversion of reflection times in three dimensions
      Håvar Gjøystdal and Bjørn Ursin
      Geophysics, 1981, Volume 46, pp. 972-983
      Abstract   Full Text: [  PDF  ]  



      1980

      Access to PDF allowed Asymptotic convergence properties of the extended Kalman filter using filtered state estimates
      Bjørn Ursin
      IEEE Trans. Automatic Control AC - 25, 1980, pp. 1207-1211
      Abstract   Full Text: [  PDF  ]  



      1979

      Access to PDF allowed Adaptive long-period multiple attenuation
      Helge Brandsæter and Bjørn Ursin
      Geophysical Prospecting, 1979, Volume 27, pp. 709-725
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed A new high-resolution or deep penetration airgun array
      Helge Brandsæter, Anders Farestveit, and Bjørn Ursin
      Geophysics, 1979, Volume 44, pp. 865-879
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Seismic signal detection and parameter estimation
      Bjørn Ursin
      Geophysical Prospecting, 1979, Volume 27, pp. 1-15
      Abstract   Full Text: [  PDF  ]  



      1978

      Access to PDF allowed Attenuation of coherent noise on marine seismic exploration using very long arrays
      Bjørn Ursin
      Geophysical Prospecting, 1978, Volume 26, pp. 722-749
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Reply by author to discussion by Peter Hubral
      Bjørn Ursin
      Geophysics, 1978, Volume 43, p. 1552
      Abstract   Full Text: [  PDF  ]  

      Access to PDF allowed Wavefront curvature in a layered medium
      Bjørn Ursin
      Geophysics, 1978, Volume 43, pp. 1011-1013
      Abstract   Full Text: [  PDF  ]  



      1977

      Access to PDF allowed Airgun array developed with high resolution and deep penetration.
      Helge Brandsæter, Anders Farestveit, and Bjørn Ursin
      The Oil and Gas Journal, 1977, 75, 154-162

      Access to PDF allowed Seismic velocity estimation
      Bjørn Ursin
      Geophysical Prospecting, 1977, Volume 25, pp. 658-666
      Abstract   Full Text: [  PDF  ]  



      1971

      Access to PDF allowed Approximate lumped models of a tubular chemical reactor, and their use in feedback and feedforward control
      Magne Fjeld and Bjørn Ursin
      Paper 5.1.3 in H. Schwarz (ed), 1971, Multivariable technical control systems. Proceedings of the 2nd IFAC Symposium, Dusseldorf, October 11-13, 1971, North-Holland Publishing Company, Amsterdam, 1971


      Last modified: October, 2015