2019

• Vitenskapelig foredrag
  Iversen, Einar; Ursin, Bjørn; Saksala, Teemu; Ilmavirta, Joonas; de Hoop, Maarten V.. (2019) Higher-order Hamilton-Jacobi perturbation theory for anisotropic heterogeneous media: transformation between Cartesian and ray-centred coordinates. Geo-Mathematical Imaging Group Geo-Mathematical Imaging Group Annual Project Review, pp. 329-349 , Rice University, TX 2019-04-29 - 2019-04-30
• Vitenskapelig foredrag
  Iversen, Einar; Ursin, Bjørn; Saksala, Teemu; Ilmavirta, Joonas; de Hoop, Maarten V.. (2019) Higher-order Hamilton-Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in ray-centred coordinates. Geo-Mathematical Imaging Group Geo-Mathematical Imaging Group Annual Project Review, pp. 351-381 , Rice University, TX 2019-04-29 - 2019-04-30

2018

• Vitenskapelig foredrag
  Iversen, Einar; Ursin, Bjørn; de Hoop, Maarten V.. (2018) Higher-order Dynamic Ray Tracing for Extrapolation of Traveltime and Geometrical Spreading. European Association of Geoscientists and Engineers EAGE 80th Conference & Exhibition , Copenhagen 2018-06-11 - 2018-06-14
• Vitenskapelig foredrag
  Iversen, Einar; Ursin, Bjørn; de Hoop, Maarten V.. (2018) Higher-order extrapolation of traveltime and geometrical spreading in anisotropic heterogeneous media. Society of Exploration Geophysicists SEG Annual Meeting , Anaheim 2018-10-14 - 2018-10-19
• Vitenskapelig foredrag
  Iversen, Einar; Ursin, Bjørn; de Hoop, Maarten V.. (2018) Higher-order Hamilton-Jacobi theory with applications for 3D heterogeneous anisotropic media. Geo-Mathematical Imaging Group, Rice University Annual Meeting of the Geo-Mathematical Imaging Group , Houston 2018-04-18 - 2018-04-19
• Faglig foredrag
  Jakobsen, Morten; Psencik, Ivan; Iversen, Einar; Ursin, Bjørn. (2018) Nonlinear inverse scattering in anisotropic elastic media. University of California, Santa Cruz International workshop on Seismic-Wave Scattering, Imaging and Inversion , Santa Cruz, California 2018-07-19 - 2018-07-21

2017

• Faglig foredrag
  Jakobsen, Morten; Psencik, Ivan; Iversen, Einar; Ursin, Bjørn. (2017) On the parameterization of seismic anisotropy in elastic waveform inversion: The HTI case. European Association of Geoscientists and Engineers EAGE Annual Meeting , Paris 2017-06-12 - 2017-06-15
• Vitenskapelig foredrag
  Iversen, Einar; Ursin, Bjørn; de Hoop, Maarten V.. (2017) Higher-order Hamilton-Jacobi perturbation equations for anisotropic media. Geo-Mathematical Imaging Group Geo-Mathematical Imaging Group Annual Project Review, pp. 227-250 , Rice University, TX 2017-04-15 -
• Vitenskapelig foredrag
  Jakobsen, Morten; Psencik, Ivan; Iversen, Einar; Ursin, Bjørn. (2017) On the Parameterization of Seismic Anisotropy in Elastic Waveform Inversion - The HTI Case. European Association of Geoscientists and Engineers 79th EAGE Conference and Exhibition 2017 , Paris 2017-06-12 -

2016

• Vitenskapelig foredrag
  Silva, Michelângelo G.; Porsani, Milton J.; Ursin, Bjørn. (2016) A single-trace singular value decomposition Method With Application to ground-roll removal. SEG Annual Meeting , Dallas 2016-10-16 - 2016-10-21
• Vitenskapelig foredrag
  Favretto-Cristini, N.; Tantsereva, Anastasiya; Aizenberg, A; Ursin, Bjørn; Cristini, P.. (2016) Validation expérimental de simulations numérique de champs d'ondes diffractés par une structure viscoélastique à topographie complexe. Congrés Francais d'Acoustique , Le Mans 2016-04-11 - 2016-04-15

2014

• Vitenskapelig foredrag
  Favretto-Cristini, N.; Ursin, Bjørn; Cristini, P.. (2014) Interface Fresnel Zone for Reflected Waves from a Curved Interface in Anisotropic Media. EAGE 76 th EAGE Conference & Exhibition 2014 , Amsterdam 2014-06-16 - 2014-06-19
• Vitenskapelig foredrag
  Ursin, Bjørn; da Silva, M. G.; Porsani, Milton J.. (2014) Signal and Traveltime Parameter Estimation Using Singular Value Decomposition. EAGE 76 th EAGE Conference & Exhibition 2014 , Amsterdam RAI 2014-06-16 - 2014-06-19
• Vitenskapelig foredrag
  Favretto-Cristini, N.; Ursin, Bjørn; Cristini, P.. (2014) Resolution sismique laterale le long d'une interface courbe entre deux milieux anisotropes: cas des ondes reflechies. CFA Le Congres Francais d'Acoustique , Marseille 2014-04-22 - 2014-04-25
• Vitenskapelig foredrag
  Favretto-Cristini, N.; Cristini, P.; Tantsereva, Anastasiya; Ursin, Bjørn; Komatitsch, Dimitri; Aizenberg, A. M.. (2014) Simulations numeriques versus Benchmarks experimentaux de la propagation des ondes en environnement topographique complexe: resultats d'une methode d'elements finis spectraux et de la methode de l'integrale de Kirchhoff discretisee. CFA 2014 Le Congres Francais d'Acoustique , Poitier 2014-04-22 - 2014-04-25

2013

• Vitenskapelig foredrag
  Ursin, Bjørn; Tantsereva, Anastasiya; Favretto-Cristini, N.; Cristini, P.; Komatisch, D.; Aizenberg, A. M.. (2013) Numerical modeling of zero-offset Acoustic data by the Tip-Wave Superposition Method and the Spectral-Element Method. International Conference on 3-D Wave Propagation and Imaging through the Earth's Interior , Wuhan 2013-05-18 - 2013-05-20
• Vitenskapelig foredrag
  Jakobsen, Morten; Ursin, Bjørn. (2013) Nonlinear waveform inversion as a sequence of linear inverse problems. Workshop on Full Waveform Inversion , Muscat 2013-04-27 - 2013-05-01
• Vitenskapelig foredrag
  Ursin, Bjørn; silva, michelângelo G.; Porsani, Milton J.. (2013) Generalized semblance coefficients using singular value decomposition. 13th International Congress of the Brazilian Geophysical Society , Rio de Janeiro 2013-08-26 - 2013-08-29
• Vitenskapelig foredrag
  Tantsereva, Anastasiya; Ursin, Bjørn; Favretto-Cristini, N.; Cristini, P.; Aizenberg, A. M.. (2013) Numerical modelling of zero-offset Acoustic data by the tip-wave superposition method. SPE 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013 , London 2013-06-10 - 2013-06-13
• Vitenskapelig foredrag
  Jakobsen, Morten; Ursin, Bjørn. (2013) Nonlinear seismic waveform inversion. KSEG KSEG Symposium on Geophysics for Discovery and Exploration 2013-09-19 - 2013-09-21

2012

• Vitenskapelig foredrag
  Favretto-Cristini, N.; Cristini, P.; Komatitsch, Dimitri; Ursin, Bjørn; Tantsereva, Anastasiya; Aizenberg, A. M.. (2012) Laboratory benchmarks vs. Synthetic modeling of seismic wave propagation in complex environments (BENCHIE Project). Acoustics 2012 Nantes Conference , Nantes 2012-04-23 - 2012-04-27
• Vitenskapelig foredrag
  Porsani, Milton J.; silva, michelângelo G.; Ursin, Bjørn. (2012) Reflectivity estimation using minimum-delay seismic trace decomposition. V Simposio Brasileiro de Geofisica , Salvador 2012-11-27 - 2012-11-29
• Vitenskapelig foredrag
  Tantsereva, Anastasiya; Ursin, Bjørn; Favretto-Cristini, N.; Cristini, P.; Komatitsch, Dimitri; Aizenberg, A. M.. (2012) Comparison of Numerical Seismic Modeling Results with Acoustic Water-tank Data. EAGE 74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012 , Copenhagen 2012-06-04 - 2012-06-07
• Vitenskapelig foredrag
  Andrade, Marcus C.B.; Porsani, Milton J.; Medeiros, Walter E.; Ursin, Bjørn. (2012) Representacão Tempo versus Frequência do Traco Sismico os Mètodos de Wigner-Ville e a Decomposicão de Fase Minima. V Simposio Brasileiro de Geofisica , Salvador 2012-11-27 - 2012-11-29
• Vitenskapelig foredrag
  Jakobsen, Morten; Ursin, Bjørn. (2012) The nonlinear waveform inversion problem. Lofotenseminaret i petroleumsgeofysikk , Henningsvær Bryggehotell 2012-08-15 - 2012-08-17
• Vitenskapelig foredrag
  Jakobsen, Morten; Ursin, Bjørn. (2012) Seismic waveform inversion using a T-matrix approach. KSEG KSEG Symposium on Geophysics for Discovery and Exploration 2012-09-19 - 2012-09-21
• Vitenskapelig foredrag
  Jakobsen, Morten; Ursin, Bjørn. (2012) Nonlinear seismic waveform inversion using a Born iterative T-matrix method. Society of Exploration Geophysics SEG Annual Meeting , Las Vegas 2012-11-04 - 2012-11-09

2011

• Vitenskapelig foredrag
  Pestana, Reynam C.; Ursin, Bjørn; Stoffa, Paul L.. (2011) Seperate P- and SV-wave equations for VTI media. SEG San Antonio 2011 Annual Meeting 81st SEG Meeting , San Antonio, Texas 2011-09-18 - 2011-09-23
• Vitenskapelig foredrag
  Pestana, Reynam C.; Ursin, Bjørn; Stoffa, Paul L.. (2011) Seperate P- and SV-wave equations for VTI media. 11th Int. Congress of the Brazilian Geophysical Society 11th Int. Congress of the Brazilian Geophysical Society , Rio de Janeiro 2011-08-15 - 2011-08-18
• Vitenskapelig foredrag
  Abbad, Brahim; Ursin, Bjørn. (2011) High-resolution bootstrapped differential-semblance. 81st SEG Meeting SEG San Antonio 2011 Annual Meeting , San Antonio 2011-09-18 - 2011-09-23
• Vitenskapelig foredrag
  Jakobsen, Morten; Ursin, Bjørn. (2011) T-matrix Approach to the Nonlinear Waveform Inversion Problem in 4D Seismics. 73rd EAGE Conference & Exhibition incorporating SPE EUROPEC 73rd EAGE Conference & Exhibition incorporating SPE EUROPEC 2011 , Wien 2011-05-23 - 2011-05-26

2010

• Vitenskapelig foredrag
  Ursin, Bjørn; Amundsen, Lasse; Westerdahl, Harald; Thompson, Mark; Haugen, Jon Andre; Reitan, Arne. (2010) Multicomponent OBS and VC acquisition for wavefield reconstruction. SEG 80th SEG Meeting , Denver 2010-10-17 - 2010-10-22
• Vitenskapelig foredrag
  Ursin, Bjørn; Malcolm, A. E.; de Hoop, M.V.. (2010) Imaging with Doubly-scattered Waves - A North Sea Case Study. EAGE 72nd EAGE Conference , Barcelona 2010-06-14 - 2010-06-17
• Vitenskapelig foredrag
  Ursin, Bjørn; Porsani, Milton J.; Silva, Michelângelo G.; Melo, Paulo E. M.. (2010) An adaptive local-slope SVD filtering approach to enhance events on seismic sections. SEG 80th SEG Meeting , Denver 2010-10-17 - 2010-10-22
• Vitenskapelig foredrag
  Ursin, Bjørn; Wiik, Torgeir; Løseth, L.O.; Hokstad, Ketil. (2010) TIV Contrast Source Inversion of mCSEM data. EGM EGM 2010 International Workshop , Capri 2010-04-11 - 2010-04-14
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn; Toverud, Tommy. (2010) Seismic attenuation and dispersion models: Theory and VSP data analysis. Workshop meeting seismic waves in laterally inhomogeneous media VII 2010 , Czech Republic 2010-06-21 - 2010-06-26

2009

• Vitenskapelig foredrag
  Ayzenberg, Milana; Aizenberg, Arkady M.; Helle, Hans Bjarne; Klem-Musatov, Kamill D.; Pajchel, J.; Ursin, Bjørn. (2009) Our Experiences of 3D Synthetic Seismic Modeling with Tip-wave Superposition Method and Effective Coefficients. EAGE Conference , Amsterdam 2009-06-08 - 2009-06-11
• Vitenskapelig foredrag
  Amundsen, Lasse; arnstsen, børge; Reitan, A.; Ursin, Bjørn. (2009) Wave-equation Depth Migration in Elastic Media New Results. EAGE Conference , Amsterdam 2009-06-08 - 2009-06-11
• Vitenskapelig foredrag
  Wiik, Torgeir; Ursin, Bjørn; Hokstad, Ketil. (2009) Frequency Domain EM Modeling in Conductive TIV Media. EAGE Conference , Amsterdam 2009-06-08 - 2009-06-11
• Vitenskapelig foredrag
  Malcolm, A.; Ursin, Bjørn; de Hoop, M.V.. (2009) Imaging with multiply scattered seismic waves. Waves 2009 , Pau 2009-06-15 - 2009-06-19
• Vitenskapelig foredrag
  Ursin, Bjørn; Abbad, Brahim; Porsani, Milton J.. (2009) Multiple attenuation with a modified parabolic Radon transform. International Congress of the Brazilian Geophysical Society , Salvador 2009-08-24 - 2009-08-28
• Vitenskapelig foredrag
  Ursin, Bjørn; Tygel, Martin; Iversen, Einar. (2009) SS-traveltime parameters from PP- and PS-reflections. International Congress of the Brazilian Geophysical Society , Salvador 2009-08-24 - 2009-08-28
• Vitenskapelig foredrag
  Wang, Shen; de Hoop, Maarten V.; Ursin, Bjørn. (2009) Illumination analysis of wave-equation imaging with "curvelets". SEG Houston 2009 International Exposition and Annual Meeting , Houston 2009-10-25 - 2009-10-30
• Vitenskapelig foredrag
  Tyapkin, Yuriy; Ursin, Bjørn; Silinska, Olena; Tiapkina, Olena. (2009) Zero- and first-order approximations for least-squares estimation of seismic signal contaminated by coherent and random noise of complex structure. SEG Houston 2009 International Exposition and Annual Meeting , Houston 2009-10-25 - 2009-10-30
• Vitenskapelig foredrag
  Porsani, Milton J.; Silva, Michelângelo G.; Melo, Paulo E. M.; Ursin, Bjørn. (2009) Filtragem do ground roll utilizando SVD. International Congress of the Brazilian Geophysical Society , Salvador 2009-08-24 - 2009-08-28
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2009) Seismic attenuation and dispersion models-theory and VSP data analysis. EAGE EAGE-SEG Workshop , Barcelona 2009-09-14 - 2009-09-15
• Vitenskapelig foredrag
  Porsani, Milton J.; silva, michelângelo G.; Melo, Paulo E. M.; Ursin, Bjørn. (2009) Ground-roll attenuation based on SVD filtering. SEG Houston 2009 International Exposition and Annual Meeting , Houston 2009-10-25 - 2009-10-30

2008

• Vitenskapelig foredrag
  Arntsen, Børge; Amundsen, Lasse; Dischler, Eirik Øverland; Reitan, Arne; Ursin, Bjørn. (2008) Wave equation depth migration - a new method of solution. Society of Exploration Geophysicists SEG Las Vegas 2008 , Las Vegas 2008-11-09 - 2008-11-14
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2008) Improved Geometrical Spreading Approximation in Layered Transversely Isotropic Media. EAGE 3rd Saint Petersburg International Conference & Exhibition , Saint Petersburg 2008-04-07 - 2008-04-10
• Vitenskapelig foredrag
  Malcolm, A.; Ursin, Bjørn; de Hoop, M.V.. (2008) Subsalt imaging with internal multiples. Expanded abstracts, 2461-2465. SEG 78th SEG Meeting 2008-11-09 - 2008-11-14
• Vitenskapelig foredrag
  Ursin, Bjørn; Abbad, Brahim; Rappin, D.. (2008) Automatic nonhyperbolic velocity analsysis. Expanded abstracts, 3058-3062. SEG 78th SEG Meeting , Las Vegas 2008-11-09 - 2008-11-14
• Vitenskapelig foredrag
  Alerini, M.; Ursin, Bjørn. (2008) Adaptive limitation of the migration operator aperture. Extended abstracts, F032. EAGE 70th EAGE Conference , Roma 2008-06-09 - 2008-06-12
• Vitenskapelig foredrag
  Ayzenberg, Milana; Tsvankin, I; Aizenberg, A.M.; Ursin, Bjørn. (2008) Effective reflection coefficients for curved interfaces in TI media. Extended abstracts, P346. EAGE 70th EAGE Conference , Roma 2008-06-09 -
• Vitenskapelig foredrag
  Ayzenberg, Milana; Aizenberg, A.M.; Helle, H.B.; Klem-Musatov, K.D.; Pajchel, J.; Ursin, Bjørn. (2008) 3D modelling of acoustic Green's function in layered media with diffracting edges. Extended abstracts, F052. EAGE 70th EAGE Conference , Roma 2008-06-09 - 2008-06-12
• Vitenskapelig foredrag
  Amundsen, Lasse; Arntsen, Børge; Reitan, A.; Dischler, E.Ø.; Ursin, Bjørn. (2008) Wave equation depth migration - a new method of solution. Expanded abstracts, 2252-2256. SEG 78th SEG Meeting , Las Vegas 2008-11-09 - 2008-11-14

2007

• Vitenskapelig foredrag
  Ursin, Bjørn; Carcione, J.M.. (2007) Seimic-Velocity/Electrical-Conductivity Relations. EGM EGM 2007 International Workshop , Capri 2007-04-15 - 2007-04-18
• Vitenskapelig foredrag
  Løseth, L.O.; Ursin, Bjørn; Amundsen, L.. (2007) On the Effects of Anisotropy in Marine CSEM. EAGE EAGE 69th Conference & Exhibition - London, UK , London 2007-06-11 - 2007-06-14
• Vitenskapelig foredrag
  Nordskag, Janniche Iren; Amundsen, Lasse; Ursin, Bjørn. (2007) Decomposition of Marine Electromagnetic Fields Into TE and TM Modes for Enhanced Interpretation. EGM EGM 2007 International Workshop , Capri 2007-04-15 - 2007-04-18
• Vitenskapelig foredrag
  Pedersen, Ørjan; Brandsberg-Dahl, Sverre; Ursin, Bjørn. (2007) Seismic Imaging Using Lateral Adaptive Windows. EAGE EAGE 69th Conference & Exhibition - London, UK , London 2007-06-11 - 2007-06-14
• Vitenskapelig foredrag
  Alerini, M.; Riede, M.; Ursin, Bjørn. (2007) Limited-Aperture Migration by Sterotomography Output. EAGE EAGE 69th Conference & Exhibition - London, UK , London 2007-06-11 - 2007-06-14
• Vitenskapelig foredrag
  Rabben, Tor Erik; Ursin, Bjørn. (2007) Nonlinear least squares inversion of reflection coefficients using Bayesian regularization. SEG 77th SEG/San Antonio 2007 Annual Meeting , San Antonio 2007-09-23 - 2007-09-26
• Vitenskapelig foredrag
  Tyapkin, Y.; Ursin, Bjørn; Roganov, Y.; Nekrasov, I.; Shumlyanskaya, G.. (2007) Least-Squares Signal Estimation with Complicated Mathematical Models of Seismic Data. EAGE EAGE 69th Conference & Exhibition - London, UK , London 2007-06-11 - 2007-06-14
• Vitenskapelig foredrag
  Rabben, Tor Erik; Tjelmeland, Håkon; Ursin, Bjørn. (2007) Nonlinear Bayesian joint inversion of seismic reflection coefficients. EAGE Petroleum Geostatistics 2007, Cascais, Portugal , Cascais 2007-09-10 - 2007-09-14
• Vitenskapelig foredrag
  Hoang, P.; Avseth, P.A.; Ursin, Bjørn; van Wijngaarden, A.J.. (2007) Rock Physics Depth Trend Analysis Based on Stacking Velocity. EAGE EAGE 69th Conference & Exhibition - London, UK , London 2007-06-11 - 2007-06-14
• Vitenskapelig foredrag
  Ayzenberg, Milana; Aizenberg, A.; Helle, H.; Klem-Musatov, K.; Pajchel, J.; Ursin, Bjørn. (2007) 3-D Acoustic Green's Function Modeling in Multilayered Overburden. EAGE EAGE 69th Conference & Exhibition , London 2007-06-11 - 2007-06-14
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2007) The Reflection and Transmission Responces of a Periodically Layered Medium. Association for Mathematical Geology 12th Conference of the Int. Association for Mathematical Geology , Beijing 2007-08-26 - 2007-08-31
• Vitenskapelig foredrag
  Ursin, Bjørn; Tygel, M.. (2007) Zero-offset seismic amplitude decomposition and migration. Brazilian Geophysical Society 10th International Congress of the Brazialian Geophysical Society , Rio de Janeiro 2007-11-19 - 2007-11-23
• Vitenskapelig foredrag
  Abbad, Brahim; Ursin, Bjørn; Rappin, D.. (2007) Automatic nonhyperbolic velocity analysis in VTI media. Brazilian Geophysical Society 10th International Congress of the Brazilian Geophysical Society , Rio de Janeiro 2007-11-19 - 2007-11-23
• Poster
  Malcolm, A.; Ursin, Bjørn; de Hoop, M.. (2007) Multiples: From artifact prediction to image reconstruction via illumination. AGU AGU Fall Meeting , San Fransisco, CA 2007-12-09 - 2007-12-13
• Poster
  Stovas, Alexey; Ursin, Bjørn. (2007) The Geometrical Spreading in VTI Medium Revisited. EAGE EAGE 69th Conference & Exhibition - London, UK , London 2007-06-11 - 2007-06-14

2006

• Vitenskapelig foredrag
  Aizenberg, A.M.; Ayzenberg, Milana; Helle, H.B.; Klem-Musatov, K.D.; Pajchel, J.; Ursin, Bjørn. (2006) 3D seismic diffraction modelling in multilayered media in terms of surface integrals. EAGE 68th EAGE Conference & Exhibition , Wien 2006-06-12 - 2006-06-15
• Vitenskapelig foredrag
  Pedersen, Ørjan; Ursin, Bjørn; Stovas, Alexey. (2006) Wide-Angle Phase-Slowness Approximations in VTI Media (P186). EAGE EAGE 68th Conference & Exhibition , Wien 2006-06-12 - 2006-06-15
• Vitenskapelig foredrag
  Nag, Steinar; Alerini, M.; Duveneck, E.; Ursin, Bjørn. (2006) 2D stereotomography for anisotropic media. Society of Exploration Geophysicists SEG International Exposition and Seventy-Sixth Annual Meeting , New Orleans 2006-10-01 - 2006-10-06
• Vitenskapelig foredrag
  Tyapkin, Yuriy; Ursin, Bjørn; Roganov, Y.; Nekrasov, I.. (2006) Optimum seismic signal estimation with complicated models of coherent and random noise. Society of Exploration Geophysicists SEG International Exposition and Seventy-Sixth Annual Meeting , New Orleans 2006-10-01 - 2006-10-06

2005

• Vitenskapelig foredrag
  Ursin, Bjørn; Stovas, Alexey. (2005) Traveltime approximations for a layered transversely isotropic medium. Anisotropy Workshop , Praha 2005-06-13 - 2005-06-17
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2005) The reflection and transmission responses of a periodic layered medium. SEG SEG/Houston 2005 Annual Meeting , Houston 2005-11-06 - 2005-11-11
• Vitenskapelig foredrag
  Ursin, Bjørn; Stovas, Alexey. (2005) P097 Generalized DIX equations for a layered transversely isotropic medium. EAGE EAGE 67th Conference & Exhibition , Madrid 2005-06-13 - 2005-06-16

2004

• Vitenskapelig foredrag
  Foss, Stig-Kyrre; Ursin, Bjørn; de Hoop, Maarten V.; Sollid, Anders. (2004) Depth Consistent PP and PS seismic angle tomography, (E015). EAGE 66th EAGE Conference & Exhibition , Paris 2004-06-07 - 2004-06-10
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2004) New traveltime approximations for a transversely isotroptic medium, (P314). EAGE EAGE 66th Conference & Exhibition , Paris 2004-06-07 - 2004-06-10
• Vitenskapelig foredrag
  Ursin, Bjørn; Stovas, Alexey. (2004) Traveltime approximations for a layered transversely isotropic medium. SEG SEG International Exposition and 74th Annual Meeting , Denver, Colorado 2004-10-10 - 2004-10-15
• Vitenskapelig foredrag
  Foss, Stig-Kyrre; Ursin, Bjørn; de Hoop, Maarten V.. (2004) Depth-consistent P- and S-wave velocity reflection tomography using PP and PS seismic data. SEG SEG International and 74th Annual Meeting , Denver, Colorado 2004-10-10 - 2004-10-15

2003

• Vitenskapelig foredrag
  Bhatt, Alpana; Helle, Hans B.; Ursin, Bjørn. (2003) Application of Committee Machines in Reservoir Characterisation While Drilling: A Novel Neural Network Approach in Log Analysis. 6th Nordic Symposium on Petrophysics , Trondheim 2001-05-16 -
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2003) New traveltime approximation for a layered transversely isotropic medium. EAGE/SEG Summer Research Workshop, Trieste, Extended abstracts, T03 , Trieste, Italy 2003-09-04 -
• Vitenskapelig foredrag
  Foss, Stig-Kyrre; Ursin, Bjørn; Sollid, A.. (2003) A practical approach to automated PP angle tomography. EAGE/SEG Summer Research Workshop, Trieste, Extended abstracts, T29 , Trieste, Italy 2003-09-04 -

2002

• Vitenskapelig foredrag
  Helle, Hans B.; Bhatt, Alpana; Ursin, Bjørn. (2002) Fluid saturation from well logs using modular neural networks. 64th EAGE Conference & Exhibition, Extended abstracts, B-45 , Florence, Italy 2002-05-30 -
• Vitenskapelig foredrag
  Bhatt, Alpana; Helle, Hans B.; Ursin, Bjørn. (2002) Determination of facies from well logs using modular neural networks. 64th EAGE Conference & Exhibition, Extended abstracts, P091 , Florence, Italy 2002-05-30 -
• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; Ursin, Bjørn; de Hoop, M.V.. (2002) Angle tomography. 64th EAGE Conference & Exhibition, Extended abstracts, B-22 , Florence, Italy 2002-05-30 -
• Vitenskapelig foredrag
  Bhatt, Alpana; Helle, Hans B.; Ursin, Bjørn. (2002) Lithofacies identification in the North Sea - a neural network approach. 7th Nordic Symposium on Petrophysics , Akureyri, Iceland 2002-08-16 -
• Vitenskapelig foredrag
  Stovas, Alexey; Ursin, Bjørn. (2002) Second-order approximations of the transmission and reflection matrices at an interface between two visco-elastic TIV media. 64th EAGE Conference & Exhibition, Extended abstracts, C-26 , Florence, Italy 2002-05-30 -
• Vitenskapelig foredrag
  Ursin, Bjørn; de Hoop, M.V.; Brandsberg-Dahl, Sverre; Sollid, A.; Clarke, R.A.. (2002) Seismic angle migration. Cairo 2002 International Petroleum Conference and Exhibition , Cairo 2002-10-30 -
• Vitenskapelig foredrag
  Ursin, Bjørn; Hokstad, Ketil. (2002) Geometrical spreading in a layered transversely isotropic medium with vertical symmetry axis. 72nd SEG Meeting , Salt Lake City 2002-10-11 -

2001

• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; de Hoop, M.V.; Ursin, Bjørn. (2001) AVA analysis and compensation on common image gathers in the angle domain. 63rd EAGE Conference, Amsterdam, Expanded abstracts, A-30 , Amsterdam 2001-06-15 -
• Vitenskapelig foredrag
  Bhatt, Alpana; Helle, Hans B.; Ursin, Bjørn. (2001) Application of parallel neural networks for reservoir characterisation while drilling. 63rd EAGE Conference, Amsterdam, Expanded abstracts, L-18 , Amsterdam 2001-06-15 -
• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; de Hoop, M.V.; Ursin, Bjørn. (2001) Velocity analysis in the scattering-angle/azimuth domain. 7th International Congress of the Brazilian Geophysical Society , Salvador 2001-10-31 -
• Vitenskapelig foredrag
  Bhatt, Alpana; Helle, Hans B.; Ursin, Bjørn. (2001) Application of parallel neural networks in reservoir characterisation from well logs. EAGE/SEG Research Workshop on Reservoir Rocks , Pau, France 2001-05-04 -
• Poster
  Stovas, Alexey; Ursin, Bjørn. (2001) A new approximation of the reflection and transmission coefficients between two visco-elastic isotropic media. 63rd EAGE Conference, Amsterdam, Expanded abstracts, P-192 , Amsterdam 2001-06-15 -
• Poster
  Brandsberg-Dahl, Sverre; de Hoop, M.V.; Ursin, Bjørn. (2001) Imaging-inversion with focusing in dip. 63rd EAGE Conference, Amsterdam, Expanded abstracts, P-79 , Amsterdam 2001-06-15 -

2000

• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; de Hoop, Maarten V.; Ursin, Bjørn. (2000) Focusing in dip and AVA compensation on scattering-angle/azimuth common image gathers. Norwegian Petroleum Research Seminar , Bergen, 15-16 November 2000
• Vitenskapelig foredrag
  Toverud, Tommy; Dimri, Vijay P.; Ursin, Bjørn. (2000) Deconvolution for scaling reflectivity. Association of Exploration Geophysicists, Seminar on Exploration Geophysics, Special Theme: Deep Water Exploration, 8-10 November, 2000 Goa, India , Goa, India, 8-10 November 2000
• Vitenskapelig foredrag
  Bhatt, Alpana; Helle, Hans B.; Ursin, Bjørn. (2000) Prediction of reservoir and fluid properties from well logs using artificial neural networks: A North Sea case study. Norwegian Petroleum Research Seminar , Bergen, 15-16 November 2000
• Vitenskapelig foredrag
  Sollid, Anders; Ursin, Bjørn. (2000) 2.5-D scattering-angle migration and AVA analysis. Norwegian Petroleum Research Seminar , Bergen, 15-16 November 2000
• Vitenskapelig foredrag
  Toverud, Tommy; Ursin, Bjørn. (2000) Estimation of viscoelastic parameters from zero-offset VSP data. Norwegian Petroleum Research Seminar , Bergen, 15-16 November 2000
• Vitenskapelig foredrag
  Sollid, Anders; Ursin, Bjørn. (2000) 2.5-D PP- and PS scattering-angle depth migration in TI media. SEG/EAGE Summer Research Workshop, Boise, October 1-6, 2000 , Boise, October 1-6, 2000
• Vitenskapelig foredrag
  Schleicher, J.; Tygel, M.; Ursin, Bjørn; Bleistein, N.. (2000) The Kirchhoff-Helmholtz integral for anisotropic elastic media. EAGE 62nd Conference and Technical Exhibition , Glasgow, Scotland, 29 May - 2 June 2000
• Vitenskapelig foredrag
  Bauer, Christian; Ursin, Bjørn; Zhao, Huasheng; Fichler, Christine. (2000) Improved shallow gas interpretation combining seismic and gravity data. Norwegian Petroleum Research Seminar , Bergen, 15-16 November 2000 2000-11-15 - 2000-11-16
• Vitenskapelig foredrag
  Pham, N.H.; Carcione, J.M.; Helle, H.B.; Ursin, Bjørn. (2000) Poro-viscolelastic representation of shaley sandstones. Norwegian Petroleum Research Seminar , Bergen, 15-16 November 2000
• Vitenskapelig foredrag
  Ursin, Bjørn; Stovas, Alexey. (2000) Approximate reflection and transmission responses from a layered isotropic visco-elastic medium. Workshop on Seismic Signatures of Fluid Transport, Berlin, Germany - Hotel Steglitz International, February 27-29, 2000 , Berlin, Germany, February 27-29, 2000
• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; Hokstad, Ketil; de Hoop, Maarten V.; Ursin, Bjørn. (2000) Maslov asymptotic Green's functions in heterogeneous anisotropic elastic media. Fifth International Conference on Mathematical and Numerical Aspects of Wave Propagation , Santiago de Compostella, July 10-14, 2000
• Poster
  Stovas, Alexey; Ursin, Bjørn. (2000) Reflection and transmission coefficients between two visco-elastic TIV media. EAGE 62nd Conference and Technical Exhibition - Glasgow, Scotland, 29 May - 2 June 2000 , Glasgow, Scotland, 29 May - 2 June 2000
• Poster
  Porsani, Milton J.; Ursin, Bjørn. (2000) Deconvolution and wavelet estimation by using a genetic algorithm. 70th SEG Meeting, Calgary , Calgary, 2000

1999

• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; de Hoop, Maarten V.; Ursin, Bjørn. (1999) Velocity analysis in the common scattering-angle/azimuth domain. 69th SEG Meeting, paper STHRY 1.3 , Houston, USA, October 31 - November 5, 1999
• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; de Hoop, Maarten; Ursin, Bjørn. (1999) The sensitivity transform in the common scattering-angle/azimuth domain. EAGE 61st Conference and Technical Exhibition, paper 4-53 , Helsinki, Finland, 7-11 June 1999
• Vitenskapelig foredrag
  Ursin, Bjørn; Stovas, Alexey. (1999) Approximate reflection and transmission responses from a layered isotropic elastic medium. EAGE 61st Conference and Technical Exhibition, paper 4-13 , Helsinki, Finland, 7-11 June 1999
• Vitenskapelig foredrag
  Toverud, Tommy; Ursin, Bjørn. (1999) Estimation of viscoelastic parameters from zero-offset VSP data. EAGE 61st Conference and Technical Exhibition, paper 4-29. The 6th International Congress of the Brazilian Geophysical Society, paper SBGf 119. , Helsinki, Finland, 7-11 June 1999 og Rio de Janeiro, Brazil, Aug. 1999
• Vitenskapelig foredrag
  Brandsberg-Dahl, Sverre; de Hoop, Maarten V.; Ursin, Bjørn. (1999) A framework for DSO in the common scattering angle domain in the presence of multi-pathing. Fifth SIAM Conference on Mathematical and Computational Issues in Geosciences, MS21 , San Antonio, USA, 1999
• Vitenskapelig foredrag
  Ursin, Bjørn; Tygel, Martin. (1999) Scattering, reflection and diffraction in anisotropic media. 4th International Conference on Theoretical and Computational Acoustics, C4-10 , Trieste, 1999

1998

• Vitenskapelig foredrag
  Causse, Emmanuel; Ursin, Bjørn. (1998) Analysis of errors in constant velocity viscoacoustic migration. 60th Conference, European Association of Geoscientists and Engineers, Expanded Abstracts, P033 , [Mangler data]
• Vitenskapelig foredrag
  Toverud, Tommy; Ursin, Bjørn. (1998) Comparison of different seismic attenuation laws. 2nd International Conference and Technical Exhibition , Krakow, Polen, 1-4 September 1998
• Vitenskapelig foredrag
  Porsani, Milton J.; Ursin, Bjørn. (1998) An optimality formulation for the design of mixed-phase inverse filters. 68th SEG Meeting , [Mangler data]

1997

• Vitenskapelig foredrag
  Causse, Emmanuel; Mittet, Rune; Ursin, Bjørn. (1997) Preconditioned full-waveform inversion in general viscoacoustic media. EAGE 59th Conference and Technical Exhibition , Geneve
• Vitenskapelig foredrag
  Helle, H.B.; Zhao, T.; Ursin, Bjørn; Carcione, J.. (1997) AVO analysis of the Kimmeridge clay formation. EAGE 59th Conference and Technical Exhibition , Geneve
• Vitenskapelig foredrag
  Ursin, Bjørn; Tygel, Martin. (1997) Reciprocal volume and surface integrals for anisotropic elastic media. 5th International Congress of the Brazilian Geophysical Society , Sao Paulo
• Vitenskapelig foredrag
  Novais, Amélia; Santos, Lúcio T.; Tygel, Martin; Ursin, Bjørn. (1997) A unified Born-Kirchhoff representation for acoustic media. 5th International Congress of the Brazilian Geophysical Society , Sao Paulo
• Vitenskapelig foredrag
  Haugen, Geir Ultveit; Ursin, Bjørn. (1997) Analytic insight into PP and PS azimuthal AVO response for a vertically fractured reservoir. EAGE 59th Conference and Technical Exhibition , Geneve
• Vitenskapelig foredrag
  Eide, Alfhild Lien; Ursin, Bjørn; Omre, Henning. (1997) Stochastic simulation of porosity and acoustic impedance conditioned to seismic data and well data. Society of Exploration Geophysicists. 67th Annual Meeting , Dallas, Tex.

1996

• Vitenskapelig foredrag
  Bakke, Nils Erik; Ertresvåg, Eilif Tom; Ursin, Bjørn. (1996) Analysis of the seismic response from thin calcite cemented layers. EAGE 58th Conference and Technical Exhibition , [Mangler data]
• Vitenskapelig foredrag
  Lu, Guochun; Ursin, Bjørn; Lutro, Jan. (1996) Estimation of the sea bottom reflectivity function from multioffset seismic data. 66th SEG Meeting , [Mangler data]
• Vitenskapelig foredrag
  Haugen, Geir U.; Ursin, Bjørn. (1996) AVO-A analysis of a vertically fractured reservoir underlying shale. 66th SEG Meeting , [Mangler data]
• Vitenskapelig foredrag
  Haugen, Geir U.; Ursin, Bjørn. (1996) Elastic properties of rocks with fracture-induced anisotropy. Seismic anisotropy , [Mangler data]
• Vitenskapelig foredrag
  Porsani, Milton J.; Ursin, Bjørn. (1996) Mixed-phase deconvolution of seismic and ground penetrating radar data. 66th SEG Meeting , [Mangler data]
• Vitenskapelig foredrag
  Porsani, Milton J.; Ursin, Bjørn. (1996) Deconvolu#;c#~ao de fase mista de dados GPR. XXXIX Congresso Brasileiro de Geologia , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Haugen, Geir U.. (1996) Azimuthal AVO analysis of a vertically fractured reservoir. EAEG Winter Symposium , [Mangler data]

1995

• Vitenskapelig foredrag
  Shapiro, S.A.; Hubral, P.; Ursin, Bjørn. (1995) Approximate reflectivity and transmissivity for vertically inhomogeneous elastic media. EAGE 57th Conference and Technical Exhibition , [Mangler data]
• Vitenskapelig foredrag
  Shapiro, Sergei A.; Hubral, Peter; Ursin, Bjørn. (1995) Seismic-wave reflectivity/transmissivity for randomly-layered nonstationary sediments. 65th SEG Meeting , [Mangler data]
• Vitenskapelig foredrag
  Ekren, Bjørn O.; Ursin, Bjørn. (1995) Frequency-wavenumber constant-offset migration and AVO analysis. 65th SEG Meeting , [Mangler data]
• Vitenskapelig foredrag
  Porsani, Milton J.; Ursin, Bjørn. (1995) Mixed-phase deconvolution. 65th SEG Meeting , [Mangler data]
• Vitenskapelig foredrag
  Haugen, Geir Ultveit; Ursin, Bjørn. (1995) Elastic properties of rocks with fracture-induced anisotropy. Karlsruhe Workshop on Effective-Media Concepts for Seismic Wave Propagation , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Zhao, Huasheng. (1995) Modeling and inversion of the elasto-dynamic equations. , [Mangler data]
• Vitenskapelig foredrag
  Erlandsen, Espen; Tjåland, Egil; Ursin, Bjørn. (1995) Frequency-wavenumber image reconstruction of ultrasonic medical data. Nuclear Science Symposium and Medical Imaging Conference , San Francisco
• Vitenskapelig foredrag
  Lu, Guochun; Ursin, Bjørn. (1995) Improved traveltime tomography applied to two-phase ultrasonic imaging. 3rd SEGJ/SEG International Symposium , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Haugen, Geir Ultveit. (1995) Weak-contrast approximation of the elastic scattering matrix in anisotropic media. Workshop Meeting on Seismic Waves in Laterally Inhomogeneous Me dia IV , [Mangler data]
• Vitenskapelig foredrag
  Porsani, Milton J.; Ursin, Bjørn. (1995) Decomposition of a mixed-phase causal signal. 1st Conference of the Latin American Geophysical Union , [Mangler data]
• Vitenskapelig foredrag
  Bakke, Nils; Ursin, Bjørn. (1995) Thin-bed AVO effects. EAEG 57th Conference and Technical Exhibition , [Mangler data]

1994

• Vitenskapelig foredrag
  Ursin, Bjørn; Ekren, Bjørn Olav; Tjåland, Egil. (1994) Linearized elastic parameter sections. European Association of Exploration Geophysicists. 56. Meeting and Technical Exhibition , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn. (1994) Constrained total least squares estimation of the seismic reflection response. , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Zhao, Huasheng. (1994) Elastic inversion of a shallow seismic anomaly in the southern Barents Sea. EAEG 56. Meeting and Technical Exhibition , [Mangler data]
• Populærvitenskapelig foredrag
  Ursin, Bjørn. (1994) Modelling and inversion of the elastic dynamic equations. , [Mangler data]
• Populærvitenskapelig foredrag
  Haugen, Geir Ultveit; Ursin, Bjørn. (1994) Elastic properties of rocks with fracture-induced anisotropy. German-Norwegian Geoscientific Co-operation Project , [Mangler data]
• Populærvitenskapelig foredrag
  Ursin, Bjørn. (1994) Modelling and inversion of the elastic dynamic equations. , [Mangler data]

1993

• Vitenskapelig foredrag
  Ursin, Bjørn; et al., [Mangler fornavn]. (1993) Migracao de ondas planas em meios lateralmente heterogeneos. Sociedade Brasileira de Geofisica. Congresso Internacional (3 : 1993 : Rio de Janeiro). Expanded abstracts , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; et al., [Mangler fornavn]. (1993) Deconvolucao direcional do dominio tau-p. Sociedade Brasileira de Geofisica. Congresso Internacional (3 : 1993 : Rio de Janeiro). Expanded abstracts , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; et al., [Mangler fornavn]. (1993) Migracao "pre-stack" para ondas p elasticas combinando tecnicas de inversao, modelamento WKB e analises de foco. Sociedade Brasileira de Geofisica. Congresso Internacional (3 : 1993 : Rio de Janeiro). Expanded abstracts , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Tjåland, Egil. (1993) A strategy for approximating the Zoeppritz equations. European Association of Exploration Geophysicists. Meeting and Technical Exhibition (55 : 1993 : Stavanger). Extended abstracts of papers , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Ekren, Bjørn. (1993) Robust AVO analysis. Lofoten-seminaret (1993 : Svolvær) , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Tjåland, Egil; Ekren, Bjørn. (1993) Seismic lithology sections. European Association of Exploration Geophysicists. Meeting and Technical Exhibition (55 : 1993 : Stavanger). Workshop: Lithology predictions from seismic data , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Tjåland, Egil. (1993) Quantification of uncertainties in AVO analysis. European Association of Exploration Geophysicists. Meeting and Technical Exhibition (55 : 1993 : Stavanger). Extended abstracts of papers , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; et al., [Mangler fornavn]. (1993) Remocao dos efeitos superficie livre de dados acusticos. Sociedade Brasileira de Geofisica. Congresso Internacional (3 : 1993 : Rio de Janeiro). Expanded abstracts , [Mangler data]
• Vitenskapelig foredrag
  Ursin, Bjørn; Ekren, Bjørn Olav; Tjåland, Egil. (1993) Seismic lithology sections. Sociedade Brasileira de Geofisica. Congresso Internacional (3 : 1993 : Rio de Janeiro). Expanded abstracts , [Mangler data]

1991

• Vitenskapelig foredrag
  Arntsen, Børge; Ursin, Bjørn; Landrø, Martin. (1991) Estimation of reflection coefficients from zero-offset field data. 53rd EAEG Meeting and Technical Exhibition , Florence, Italy, 26-30 Mai 1991

1985

• Vitenskapelig foredrag
  Arntsen, Børge; Ursin, Bjørn. (1985) Stable inversion of zero-offset data. Society of Exploration Geophysicsists Society of Exploration Geophysicist Conference and Exhibition , Washington 1985-10-03 - 1985-10-10