Leiv Jacob Gelius

Image of Leiv Jacob Gelius
Norwegian version of this page
Phone +47 22855844
Room 229
Username
Visiting address Sem Sælands vei 1 Geologibygningen 0371 Oslo
Postal address Postboks 1047 Blindern 0316 Oslo

Research

Main research interests are advanced seismic and radar imaging with applications within geotechnical planning, environmental geophysics, medical diagnostics, non-destructive testing and oil prospecting. 

Personal merits

  • Teacher of the year 2006 (elected by the students)
  • Involved in the development of marine CSEM since 1998 through advisory position  at the Norwegian Geotechnical Institute (NGI) (1997-2013). For this work NGI was awarded the Distinguished Achievement Award from SEG (Society of Exploration Geophysicists) in   2007.

  • Lorand Eötvös Award 2012 from EAGE (best paper Geophysical Prospecting).

Teaching

Current projects

  • Machine Learning in Geophysical Processing and Inversion. Industrial PhD-project in collaboration with Lundin (NFR, 2018-2021).
  • Use of Passive and Active Electromagnetics in the Barents Sea (ARCEx, 2019-2022) (1PhD).
Tags: Geophysics, Imaging, Seismic signals, Reservoir geophysics, Environmental geophysics, Medical diagnostics

Publications

Asgedom E.G., Leiv-J. Gelius, Austeng, A., Holm, S. & Tygel, M., 2011. Time-reversal multiple signal classification in case of noise: A phase-coherent approach. J. Acoust. Soc. Am. 130, 2024-2034.

Asgedom, E., Leiv-J. Gelius & Tygel, M., 2011. Higher- resolution determination of zero-offset common-reflection surface (CRS) stack parameters. International Journal of Geophysics. doi: 10.1155/2011/819831

Solberg, A. & Leiv-J. Gelius, 2011. New texture attributes from local 2D Fourier spectra. Extended Abstract. 81st SEG meeting, San Antonio, Texas, USA.

Orji, O.C., Sollner W. & Leiv-J. Gelius, 2011. Imaging time-varying sea surface using dual sensor data. Extended Abstract. 81st SEG meeting, San Antonio, Texas, USA.

Asgedom, E., Leiv-J. Gelius & Tygel M., 2011. A new approach to post-stack diffraction separation. Extended Abstract. 81st SEG meeting, San Antonio, Texas, USA.

Asgedom, E.G., Leiv-J. Gelius & Tygel, M., 2011. On separation of reflections and diffractions using a CRS/MUSIC approach. Extended Abstract, 73rd EAGE meeting, Vienna, Austria.

Solberg, A.S., Berthelot, A., & Leiv-J. Gelius, 2011. Gabor Filters for Segmentation of Salt Structures. Extended Abstract, 73rd EAGE meeting, Vienna, Austria.

Berthelot, A., Solberg, A.S., Morisbak, E. & Leiv-J. Gelius, 2011. Salt diapirs without well defined boundaries - a feasibility study of semi-automatic detection. Geophysical Prospecting online, doi: 10.1111/j.1365-2478.2011.00950.x

Asgedom, E.G., Leiv-J. Gelius & Tygel, M., 2011. Diffraction separation using the CRS technique: A field data application. Extended Abstract, 12th International Congress of The Brazilian Geophysical Society, Rio de Janeiro, Brazil.

Orji, O., Söllner, W. & Leiv-J. Gelius, 2010. Imaging the sea surface using a dual-sensor towed streamer.Geophys. 75, V111-118. doi: 10.1190/1.3496439

Leiv-J. Gelius & Asgedom, E., 2010. Diffraction-limited imaging and beyond - the concept of super resolution. Geophysical Prospecting, online. doi: 10.1111/j.1365-2478.2010.00928.x

Wang, Z. & Leiv-J. Gelius, 2010. Electric and elastic properties of rock samples: a unified measurement approach. Petroleum Geoscience 16, 171-183.

Wang, Z., Leiv-J. Gelius & Kong F.N., 2009. Simultaneous core sample measurements of electric properties and resistivity at reservoir conditions employing a modified triaxial cell - a feasibility study. Geophysical Prospecting (online), doi: 10.1111/j.1365-2478.2009.00792.x

Leiv-J. Gelius & Wang, Z., 2008. Modelling production caused changes in conductivity for a siliciclastic reservoir: a differential effective medium approach. Geophysical Prospecting 56, 677-691.

Leiv-J. Gelius, 2007. Electromagnetic scattering approximations revisited. Progress In Electromagnetic Research, PIER 76, 75-94.

Wang, Z. & Leiv-J. Gelius, 2007. Modeling of Seabed Logging Data for a Sand-shale Reservoir. Progress in Electromagnetic Research Online, Vol 3, No 2, 236-240.

Leiv-J. Gelius, 2006. Multi-component Processing of Sea Bed Logging Data. Progress in Electromagnetic Research ONLINE, Vol 2, No 6, 589-593.

Leiv-J. Gelius, 2006. Modeling the Response of a Seafloor Antenna in the Limits of Low Frequency and Shallow Water. Progress in Electromagnetic Research ONLINE, Vol 2, No 6, 2006, 580-584.

Lecomte, I., Hamran, S.-E. & Leiv-J. Gelius, 2005. Improving Kirchhoff migration with repeated local plane-wave imaging? A SAR-inspired signal-processing approach, Geophysical Prospecting 53, 767-785.

  • Sun, Jing; Hou, Song; Vinje, Vetle; Poole, Gordon & Gelius, Leiv-J. (2022). Deep learning-based shot-domain seismic deblending. Geophysics. ISSN 0016-8033. 87(3). doi: 10.1190/geo2020-0865.1.
  • Thorkildsen, Vemund Stenbekk; Gelius, Leiv-J. & Robinson, Enders A. (2021). Revisiting holistic migration. The Leading Edge. ISSN 1070-485X. 40(10), p. 768–777. doi: 10.1190/tle40100768.1.
  • Greiner, Thomas Larsen; Lie, Jan Erik; Kolbjørnsen, Odd; Evensen, Andreas Kjelsrud; Nilsen, Espen Harris & Zhao, Hao [Show all 8 contributors for this article] (2021). Unsupervised deep learning with higher-order total-variation regularization for multidimensional seismic data reconstruction. Geophysics. ISSN 0016-8033. 87(2), p. 59–73. doi: 10.1190/geo2021-0099.1. Full text in Research Archive
  • Corseri, Romain; Planke, Sverre; Faleide, Jan Inge; Senger, Kim; Gelius, Leiv-J. & Johansen, Ståle Emil (2021). Opportunistic magnetotelluric transects from CSEM surveys in the Barents Sea. Geophysical Journal International. ISSN 0956-540X. 227(3), p. 1832–1845. doi: 10.1093/gji/ggab312.
  • Jensen, Kristian; Lecomte, Isabelle Christine; Gelius, Leiv-J. & Kaschwich, Tina (2021). Point-spread function convolution to simulate prestack depth migrated images: A validation study. Geophysical Prospecting. ISSN 0016-8025. 69(8-9), p. 1571–1590. doi: 10.1111/1365-2478.13132. Full text in Research Archive
  • Hlebnikov, Volodya; Elboth, Thomas; Vinje, Vetle & Gelius, Leiv-J. (2021). Noise types and their attenuation in towed marine seismic: A tutorial. Geophysics. ISSN 0016-8033. 86(2). doi: 10.1190/geo2019-0808.1.
  • Greiner, Thomas Larsen; Hlebnikov, Volodya; Lie, Jan Erik; Kolbjørnsen, Odd; Kjeldsrud Evensen, Andreas & Harris Nilsen, Espen [Show all 8 contributors for this article] (2020). Cross-streamer wavefield reconstruction through wavelet domain. Geophysics. ISSN 0016-8033. 85(6), p. V457–V471. doi: 10.1190/geo2019-0771.1. Full text in Research Archive
  • Shantsev, Daniil; Nerland, Elias A & Gelius, Leiv-J (2020). Time-lapse CSEM: how important is survey repeatability? Geophysical Journal International. ISSN 0956-540X. 223(3), p. 2133–2147. doi: 10.1093/gji/ggaa452. Full text in Research Archive
  • Zhao, Hao; Hlebnikov, Volodya; Harris Nilsen, Espen; Kjeldsrud Evensen, Andreas; Greiner, Thomas Larsen & Lie, Jan Erik [Show all 7 contributors for this article] (2020). Kinematic wavefield attributes based multidimensional prestack data reconstruction. In SEG, . (Eds.), SEG Technical Program Expanded Abstracts 2020. SEG. ISSN 0-7251-7173-1. p. 3304–3308. doi: 10.1190/segam2020-3428420.1. Full text in Research Archive
  • Sun, Jing; Slang, Sigmund; Elboth, Thomas; Greiner, Thomas Larsen; McDonald, Steven & Gelius, Leiv-J. (2020). A convolutional neural network approach to deblending seismic data. Geophysics. ISSN 0016-8033. 85(4), p. WA13–WA26. doi: 10.1190/geo2019-0173.1. Full text in Research Archive
  • Hlebnikov, Volodya; Elboth, Thomas; Vinje, Vetle & Gelius, Leiv-J. (2019). Onboard de-noise processing for improved towed marine seismic acquisition efficiency. In SEG, . (Eds.), SEG Technical Program Expanded Abstracts 2019. SEG. ISSN 0916160009. p. 47–51. doi: 10.1190/segam2019-3212338.1. Full text in Research Archive
  • Greiner, Thomas Larsen; Kolbjørnsen, Odd; Lie, Jan Erik; Harris Nilsen, Espen; Kjeldsrud Evensen, Andreas & Gelius, Leiv-J. (2019). Cross-streamer wavefield interpolation using deep convolutional networks. In SEG, . (Eds.), SEG Technical Program Expanded Abstracts 2019. SEG. ISSN 0916160009. p. 2207–2211. doi: https%3A/doi.org/10.1190/segam2019-3214009.1. Full text in Research Archive
  • Losnedahl, Sander Wågenes; Orji, Okwudili Chuks; Gelius, Leiv-J. & Sollner, Walter (2019). Marine vibrator: Source wavefield modeling. In SEG, . (Eds.), SEG Technical Program Expanded Abstracts 2019. SEG. ISSN 0916160009. p. 3864–3868. doi: 10.1190/segam2019-3215004.1. Full text in Research Archive
  • Sun, Jing; Slang, Sigmund; Elboth, Thomas; Greiner, Thomas Larsen; McDonald, Steven & Gelius, Leiv-J. (2019). Attenuation of marine seismic interference noise employing a customized U‐Net. Geophysical Prospecting. ISSN 0016-8025. 68(3), p. 845–871. doi: 10.1111/1365-2478.12893. Full text in Research Archive
  • Zhao, Hao; Gelius, Leiv-J.; Tygel, Martin; Harris Nilsen, Espen & Kjelsrud Evensen, Andreas (2019). 3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large contrasts. Journal of Applied Geophysics. ISSN 0926-9851. 168, p. 118–127. doi: 10.1016/j.jappgeo.2019.06.009.
  • Waldeland, Anders U.; Coimbra, T.A.; Faccipieri, J. H.; Solberg, Anne H Schistad & Gelius, Leiv-J. (2019). Fast estimation of prestack Common Reflection Surface parameters. Geophysical Prospecting. ISSN 0016-8025. 67(5), p. 1163–1183. doi: 10.1111/1365-2478.12740.
  • Shantsev, Daniil; Nerland, E.A.; Babakhani, Amir & Gelius, Leiv-J. (2018). Relaxed repeatability requirements for 4D marine CSEM: Inversion study. SEG Technical Program Extended Abstract 2018. SEGEAB. ISSN 978-5-8670-8577-3. p. 934–938. doi: 10.1190/segam2018-2986235.1.
  • Coimbra, T.A.; Faccipieri, J. H.; Speglich, J.H.; Gelius, Leiv-J. & Tygel, M (2018). Enhancement of diffractions in prestack domain by means of a finite-offset double-square-root traveltime. Geophysics. ISSN 0016-8033. 84(1), p. V81–V96. doi: 10.1190/geo2018-0160.1.
  • Turquais, Pierre; Asgedom, Endrias Getachew; Sollner, Walter & Gelius, Leiv-J. (2018). Parabolic Dictionary Learning for Seismic Wavefield Reconstruction Across the Streamers. Geophysics. ISSN 0016-8033. 83(4), p. V263–V282. doi: 10.1190/geo2017-0694.1.
  • Waldeland, Anders Ueland; Zhao, Hao; Faccipieri, J. H.; Solberg, Anne H Schistad & Gelius, Leiv-J. (2018). Fast and robust common-reflection-surface parameter estimation. Geophysics. ISSN 0016-8033. 83(1), p. O1–O13. doi: 10.1190/GEO2017-0113.1. Full text in Research Archive
  • Waldeland, Anders Ueland; Jensen, Are Charles; Gelius, Leiv-J. & Solberg, Anne H Schistad (2018). Convolutional neural networks for automated seismic interpretation. The Leading Edge. ISSN 1070-485X. 37(7), p. 529–537. doi: 10.1190/tle37070529.1.
  • Pedersen, H M; Gelius, Leiv-J. & Stamnes, J J (2016). Numerical and Physical Modeling of Diffractions. In Klem-Musatov, Kamill D.; Hoeber, H; Pelissier, M & Moser, T J (Ed.), Seismic Difraction. Society of Exploration Geophysicists (SEG). ISSN 9781560803171.
  • Ordonez, Alba; Sollner, Walter; Kluver, T. & Gelius, Leiv-J. (2016). Subsurface reflectivity estimation from imaging of primaries and multiples using amplitude-normalized separated wavefields. Geophysics. ISSN 0016-8033. 81(3), p. S101–S117. doi: 10.1190/GEO2015-0385.1.
  • Faccipieri, J. H.; Coimbra, T.A.; Gelius, Leiv-J. & Tygel, M. (2016). Stacking apertures and estimation strategies for reflection and diffraction enhancement. Geophysics. ISSN 0016-8033. 81(4), p. V271–V282. doi: 10.1190/geo2015-0525.1.
  • Zhou, Nan-Nan; Xue, Guoqiang; Gelius, Leiv-J.; Wang, He Yuan & Yan, Shu (2015). Analysis of the near-source error in TEM due to the dipole hypothesis. Journal of Applied Geophysics. ISSN 0926-9851. 116, p. 75–83. doi: 10.1016/j.jappgeo.2015.02.026.
  • Chen, Wei-Ying; Xue, G.Q.; Muhammad, Younis Khan; Gelius, Leiv-J.; Zhou, Nan-Nan & Li, Hai [Show all 7 contributors for this article] (2015). Application of Short-Offset TEM (SOTEM) Technique in Mapping Water-Enriched Zones of Coal Stratum, an Example from East China. Pure and Applied Geophysics (PAGEOPH). ISSN 0033-4553. 172(6), p. 1643–1651. doi: 10.1007/s00024-014-1028-z.
  • Gelius, Leiv-J. & Tygel, Martin (2015). Migration-velocity building in time and depth from 3D (2D) Common-Reflection-Surface (CRS) stacking - theoretical framework. Studia Geophysica et Geodaetica. ISSN 0039-3169. 59(2), p. 253–282. doi: 10.1007/s11200-014-1036-6.
  • Xue, G.Q.; Li, X; Gelius, Leiv-J.; Qi, Z.; Zhou, N & Chen, W (2015). A New Apparent Resistivity Formula for In-loop Fast Sounding TEM - theory and applications. Journal of Environmental & Engineering Geophysics. ISSN 1083-1363. 20(2), p. 107–118. doi: 10.2113/JEEG20.2.107.
  • Xue, G.Q.; Yan, S.; Gelius, Leiv-J.; Chen, W; Zhou, N & Hai, L. (2015). Discovery of a major coal deposit in China with the use of a modified CSAMT method. Journal of Environmental & Engineering Geophysics. ISSN 1083-1363. 20(1), p. 47–56. doi: 10.2113/JEEG20.1.47.
  • Faccipieri, J. H.; Coimbra, T.A.; Gelius, Leiv-J. & Tygel, M. (2014). A CRS-based Heterogeneity Attribute. In EAGE2014, (Eds.), Workshop Proceedings. 76th EAGE Conference & Exhibition. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-90-3. doi: 10.3997/2214-4609.20140590.
  • Faccipieri, J. H.; Coimbra, T.A.; Tygel, M. & Gelius, Leiv-J. (2014). Common-Reflection-Surface (CRS) Stacking with Diffraction Moveouts of Varying aperture. In EAGE2014, (Eds.), Workshop Proceedings. 76th EAGE Conference & Exhibition. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-90-3. doi: 10.3997/2214-4609.20140587.
  • Gelius, Leiv-J. & Tygel, M (2014). On the use of smooth velocities in ray-based stacking and time-migration. In EAGE2014, (Eds.), Conference proceedings. 76th EAGE Conference & Exhibition. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-89-7. doi: 10.3997/2214-4609.20141499.
  • Gelius, Leiv-J. (2014). High-resolution imaging of seismic data: how to combine wave-theory with signal processing techniques. In IEEE, Org. (Eds.), 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE. ISSN 978-1-4799-2892-7. doi: 10.1109/icassp.2014.6854023.
  • Ordonez, Alba; Sollner, Walter; Kluver, T. & Gelius, Leiv-J. (2014). Migration of primaries and multiples using an imaging condition for amplitude-normalized separated wavefields. Geophysics. ISSN 0016-8033. 79(5), p. S217–S230. doi: 10.1190/GEO2013-0346.1.
  • Xue, Guoqiang; Gelius, Leiv-J.; Sakyi, Patrick Asamoah; Zhou, Nan-Nan; Chen, Wei-Ying & Su, B.C. [Show all 9 contributors for this article] (2014). Discovery of a hidden BIF deposit in Anhui province, China by integrated geological and geophysical investigations. Ore Geology Reviews. ISSN 0169-1368. 63, p. 470–477. doi: 10.1016/j.oregeorev.2014.05.007.
  • Berthelot, Angélique; Solberg, Anne H Schistad & Gelius, Leiv-J. (2013). Texture attributes for detection of salt. Journal of Applied Geophysics. ISSN 0926-9851. 88, p. 52–69. doi: 10.1016/j.jappgeo.2012.09.006.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2013). Sea Surface Reflection Coefficient Estimation. In SEG, . (Eds.), SEG Technical Program Expanded Abstracts 2013. SEGEAB. ISSN 1052-3812. doi: 10.1190/segam2013-0944.1.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2013). 2D common-offset traveltime based diffraction enhancement and imaging. Geophysical Prospecting. ISSN 0016-8025. 61(6), p. 1178–1193. doi: 10.1111/1365-2478.12057.
  • Gelius, Leiv-J.; Tygel, Martin; Takahata, Andre Kazue; Asgedom, Endrias Getachew & Serrano, Dany R. (2013). High-resolution imaging of diffractions - A window-steered MUSIC approach. Geophysics. ISSN 0016-8033. 78(6), p. S255–S264. doi: 10.1190/GEO2013-0047.1.
  • Faccipieri, J. H.; Gelius, Leiv-J. & Tygel, Martin (2013). Improved CMP and CRS Stacking by a Combined Use of Conventional and Automatic Velocity Estimation. In EAGE, 2013 (Eds.), Extended abstracts book: 75th EAGE Conference and Technical Exhibition, London, UK. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-48-4.
  • Takahata, Andre Kazue; Gelius, Leiv-J.; Lopes, Renato R.; Tygel, Martin & Lecomte, Isabelle (2013). 2D Spiking Deconvolution Approach to Resolution Enhancement of Prestack Depth Migrated Seismic Images. In EAGE, 2013 (Eds.), Extended abstracts book: 75th EAGE Conference and Technical Exhibition, London, UK. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-48-4.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2013). Imaging 3D Sea Surfaces from 3D Dual-sensor Towed Steamer Data. International Journal of Geophysics. ISSN 1687-885X. doi: 10.1155/2013/387175.
  • Faccipieri, J. H.; Serrano, D. R.; Gelius, Leiv-J. & Tygel, M (2013). Recovering diffractions in CRS stacked sections. First Break. ISSN 0263-5046. 31, p. 27–31. doi: 10.3997/1365-2397.2013014.
  • Xue, G.Q.; Gelius, Leiv-J.; Xiu, L.; Qi, Z.P. & Chen, W.Y. (2013). 3D pseudo-seismic imaging of transient electromagnetic data - a feasibility study. Geophysical Prospecting. ISSN 0016-8025. 61, p. 561–571. doi: 10.1111/j.1365-2478.2012.01109.x.
  • Jensen, Erling Hugo; Gelius, Leiv-J.; Johansen, Tor Arne & Wang, Zhong (2013). Consistent joint elastic-electrical differential effective-medium modelling of compacting reservoir sandstones. Geophysical Prospecting. ISSN 0016-8025. 61(4), p. 788–802. doi: 10.1111/1365-2478.12014.
  • Solberg, Anne H Schistad; Jensen, Are Charles & Gelius, Leiv-J. (2012). Robust 2D Hilbert Atributes of Local Amplitude and Phase. In EAGE, 2012 (Eds.), 74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-27-9.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2012). Time-varying sea surface from 3D dual-sensor streamer data. In EAGE, 2012 (Eds.), 74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-27-9. doi: 10.1155/2013/387175.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2012). Common-offset diffraction separation and imaging with interpretation. In EAGE, 2012 (Eds.), 74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-27-9. doi: 10.1111/1365-2478.12057.
  • Gelius, Leiv-J. (2012). Image resolution beyond the classical limit. In Wang, Y; Yagola, A. G. & Yang, C (Ed.), Computational methods for applied inverse problems (inverse and ill-posed problems). Walter de Gruyter (De Gruyter). ISSN 978-3110259049.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2012). Effects of time-varying sea surface in marine seismic data. Geophysics. ISSN 0016-8033. 77(3), p. P33–P43. doi: 10.1190/GEO2011-0361.1.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2012). Seismic Coherency Measures in Case of Interfering Events A focus on the most promising candidates of higher-resolution algorithms. IEEE Signal Processing Magazine. ISSN 1053-5888. 29(3), p. 47–56. doi: 10.1109/MSP.2011.2179469.
  • Gelius, Leiv-J. (2012). 3-D acoustic modelling of edge diffractions - revisited. Studia Geophysica et Geodaetica. ISSN 0039-3169. 56(2), p. 433–456. doi: 10.1007/s11200-011-9050-4.
  • Asgedom, Endrias Getachew; Tygel, Martin & Gelius, Leiv-J. (2011). On separation of reflections and diffractions using a CRS/MUSIC approach. In EAGE, 2011 (Eds.), 73rd EAGE Conference & Exhibition Incorporating SPE EUROPEC 2011. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-12-5.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2011). Imaging time-varying sea surface using dual sensor data. In Koster, Klaas (Eds.), Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011 (SEG San Antonio 2011). Curran Associates, Inc.. ISSN 9781618391841. doi: 10.1190/1.3627901.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J.; Austeng, Andreas & Tygel, Martin (2011). A new approach to post-stack diffraction separation. In Koster, Klaas (Eds.), Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011 (SEG San Antonio 2011). Curran Associates, Inc.. ISSN 9781618391841. doi: 10.1190/1.3628011.
  • Solberg, Anne H S; Berthelot, Angélique & Gelius, Leiv-J. (2011). Gabor Filters for Segmentation of Salt Structures, Extended Abstracts DVD of the 73rd EAGE Conference & Exhibition incorporating SPE EUROPEC. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73834-12-5.
  • Solberg, Anne H S & Gelius, Leiv-J. (2011). New texture attributes from local 2D Fourier spectra. Extended Abstract. In Koster, Klaas (Eds.), Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011 (SEG San Antonio 2011). Curran Associates, Inc.. ISSN 9781618391841. p. 1165–1169. doi: 10.1190/1.3627409.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J.; Austeng, Andreas; Holm, Sverre & Tygel, Martin (2011). Time-reversal multiple signal classification in case of noise: A phase-coherent approach. Journal of the Acoustical Society of America. ISSN 0001-4966. 130(4), p. 2024–2034. doi: 10.1121/1.3626526.
  • Gelius, Leiv-J. & Asgedom, Endrias Getachew (2011). Diffraction-limited imaging and beyond - the concept of super resolution. Geophysical Prospecting. ISSN 0016-8025. 59(3), p. 400–421. doi: 10.1111/j.1365-2478.2010.00928.x.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2011). Higher-resolution determination of zero-offset common-reflection surface (CRS) stack parameters. International Journal of Geophysics. ISSN 1687-885X. doi: 10.1155/2011/819831.
  • Berthelot, Angélique; Solberg, Anne H S; Jarsve, Erlend Morisbak & Gelius, Leiv-J. (2011). Salt diapirs without well defined boundaries - a feasibility study of semi-automatic detection. Geophysical Prospecting. ISSN 0016-8025. 59, p. 682–696. doi: 10.1111/j.1365-2478.2011.00950.x.
  • Wang, Zhong & Gelius, Leiv-J. (2010). Simultaneous measurements of electric and elastic properties of rock samples. In SEG, . (Eds.), Society of Exploration Geophysicists International Exposition and Annual Meeting. 80th 2010. (SEG Denver 2010). (6 vols). Curran Associates, Inc.. ISSN 9781617389801.
  • Berthelot, Angèlique; Solberg, Anne H S & Gelius, Leiv-J. (2010). Attributes designed for detection of salt diapirs without well defined boundaries. In EAGE, 2010 (Eds.), 72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010 Barcelona. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73781-86-3.
  • Asgedom, Endrias Getachew & Gelius, Leiv-J. (2010). Multi-frequency phase coherent super-resolution imaging. In EAGE, 2010 (Eds.), 72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010 Barcelona. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73781-86-3.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2010). Imaging the sea surface using a dual-sensor towed streamer. Geophysics. ISSN 0016-8033. 75(6), p. V111–V118. doi: 10.1190/1.3496439.
  • Wang, Zhong & Gelius, Leiv-J. (2010). Electric and elastic properties of rock samples: a unified measurement approach. Petroleum Geoscience. ISSN 1354-0793. 16(2), p. 171–183. doi: 10.1144/1354-079309-013.
  • Zheng, Haishan & Gelius, Leiv-J. (2009). Analyzing low-frequency seismic noise employing seismic interferometry (SI) and time-reversal modeling (TRM) - a feasibility study. In SEG, . (Eds.), DVD: 2009 Technical Program. Expanded Abstracts. SEG Houston 2009. Society of Exploration Geophysicists, International Exposition and 79th Annual Meeting, George R. Brown Convention Center, 25-30 October 2009, Houston, Texas, USA. Society of Exploration Geophysicists.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2009). Imaging the seasurface using a dual-sensor towed streamer. In SEG, . (Eds.), DVD: 2009 Technical Program. Expanded Abstracts. SEG Houston 2009. Society of Exploration Geophysicists, International Exposition and 79th Annual Meeting, George R. Brown Convention Center, 25-30 October 2009, Houston, Texas, USA. Society of Exploration Geophysicists.
  • Gelius, Leiv-J. (2009). 3-D modeling of mCSEM data employing various electromagnetic scattering approximations. In SEG, . (Eds.), DVD: 2009 Technical Program. Expanded Abstracts. SEG Houston 2009. Society of Exploration Geophysicists, International Exposition and 79th Annual Meeting, George R. Brown Convention Center, 25-30 October 2009, Houston, Texas, USA. Society of Exploration Geophysicists.
  • Gelius, Leiv-J. (2009). A Simple Analysis of Diffraction-limited Imaging and Super-resolution. In EAGE, 2009 (Eds.), 71st EAGE Conference & Exhibition Amsterdam 2009. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73781-67-2.
  • Berthelot, Angelique; Gelius, Leiv-J. & Solberg, Anne H S (2009). Use of seismic attributes in auto-tracking of salt structures - A feasibility study. In Mogi, Toru (Eds.), The 9th SEGJ International Symposium Imaging and Interpretation- Science and Technology for Sustainable Development -. Society of Exploration Geophysicists of Japan (SEGJ). ISSN 978-4-938493-06-6.
  • Wang, Zhong; Gelius, Leiv-J. & Kong, F.N. (2009). Simultaneous core sample measurements of elastic properties and resistivity at reservoir conditions employing a modified triaxial cell - a feasibility study. Geophysical Prospecting. ISSN 0016-8025. 57(6), p. 1009–1026. doi: 10.1111/j.1365-2478.2009.00792.x.
  • Wang, Zhong; Gelius, Leiv-J. & Kong, F.N. (2008). A sensitivity analysis of the sea bed logging technique with respect to reservoir heterogeneities. In SEG, . (Eds.), Society of Exploration Geophysicists International Exposition and Annual Meeting: 78th 2008 (6 vols) SEG Las Vegas 2008. Curran Associates, Inc.. ISSN 9781605607856.
  • Gelius, Leiv-J. & Wang, Zhong (2008). Modelling production caused changes in conductivity for a siliciclastic reservoir: a differential effective medium approach. Geophysical Prospecting. ISSN 0016-8025. 56, p. 677–691. doi: 10.1111/j.1365-2478.2008.00720.x.
  • Wang, Zhong; Gelius, Leiv-J. & Kong, F.N. (2007). Influence of Temperature on the Seabed-Logging Response of a Sand-shale Reservoir. In EAGE, 2007 (Eds.), EAGE 69th Conference & Exhibition - London, UK, 11 -14 June 2007 - Proceedings. European Association of Geoscientists and Engineers (EAGE). ISSN 978-90-73781-54-2.
  • Wang, Zhong & Gelius, Leiv-J. (2007). Modeling of Seabed Logging Data for a Sand-shale Reservoir. PIERS Online. ISSN 1931-7360. 3(2), p. 236–240.
  • Gelius, Leiv-J. (2007). Electromagnetic scattering approximations revisited. Electromagnetic Waves. ISSN 1070-4698. 76, p. 75–94.
  • Gelius, Leiv-J. (2006). Modeling the Response of a Seafloor Antenna in the Limits of Low Frequency and Shallow Water. PIERS Online. ISSN 1931-7360. 2(6), p. 580–584.
  • Gelius, Leiv-J. (2006). Multi-component Processing of Sea Bed Logging Data. PIERS Online. ISSN 1931-7360. 2(6), p. 589–593.
  • Lecomte, Isabelle; Hamran, Svein-Erik & Gelius, Leiv-J. (2005). Improving Kirchhoff migration with repeated local plane-wave imaging? A SAR-inspired signal-processing approach. Geophysical Prospecting. ISSN 0016-8025. 53, p. 767–785.
  • Tabti, Hocine; Gelius, Leiv-J. & Hellmann, Thomas (2004). Fresnel aperture prestack depth migration. First Break. ISSN 0263-5046. 22, p. 39–46.
  • Laurain, Renaud; Gelius, Leiv-J.; Vinje, Vetle & Lecomte, Isabelle (2004). A review of 3D illumination studies. Journal of Seismic Exploration. ISSN 0963-0651. 13, p. 17–37.
  • Hamran, Svein-Erik; Lecomte, Isabelle & Gelius, Leiv-J. (2003). Local Plane-Wave Imaging of GPR Data. Journal of Environmental & Engineering Geophysics. ISSN 1083-1363. 8, p. 115–121.
  • Lecomte, I.; Gelius, Leiv-J. & Hamran, Svein-Erik (2002). Local imaging approach and applications. In EAGE, . (Eds.), Extended Abstracts Book: 64th EAGE Conference and Technical Exhibition, Florence, Italy. EAGE. ISSN 9789073781207.
  • Tabti, H. & Gelius, Leiv-J. (2002). Fresnel Aperture PSDM. In EAGE, . (Eds.), Extended Abstracts Book: 64th EAGE Conference and Technical Exhibition, Florence, Italy. EAGE. ISSN 9789073781207.
  • Gelius, Leiv-J. & Westerdahl, H. (2002). Tunnel seismics - prediction of rock conditions ahead. European journal of environmental and engineering geophysics. ISSN 1359-8155. 7, p. 167–183.
  • Gelius, Leiv-J.; Lecomte, I. & Tabti, H. (2002). Analysis of the resolution function in seismic prestack depth imaging. Geophysical Prospecting. ISSN 0016-8025. 50, p. 505–515.
  • Tabti, Hocine; Gelius, Leiv-J. & Lecomte, Isabelle (2001). Discussion of J. Chen and G.T. Schuster's paper: Resolution Limits of migrated images. Geophysics. ISSN 0016-8033. 66.
  • Gelius, Leiv-J. & Lecomte, Isabelle (2000). The resolution function in linearized Born and Kirchhoff inversion, Lecture Notes in Earth Science: Methods and Applications of Inversion. Springer Publishing Company. ISSN 9783540659167.
  • Gelius, Leiv-J. & Lecomte, Isabelle (1999). The Resolution Function in Prestack Depth Migration. In EAGE, . (Eds.), Extended Abstracts Book: 61st EAGE Conference and Technical Exhibition, Helsinki, Finland. EAGE. ISSN 90-73781-10-8.
  • Kong, F.N.; Westerdahl, H. & Gelius, Leiv-J. (1998). A very wide bandwidth step frequency GPR for testing concrete rebars. In University of Kansas, USA (Eds.), Proceedings of the 7th International Conference on Ground Penetrating Radar. Univ. of Kansas. ISSN 9780936352169.
  • Gelius, Leiv-J. (1997). Rock-quality control of underwater crossings based on diffraction tomographic processing of subsea transmission data. European journal of environmental and engineering geophysics. ISSN 1359-8155. 2.
  • Gelius, Leiv-J. & Westerdahl, Harald (1997). Seismic noise modeling. Journal of Seismic Exploration. ISSN 0963-0651. 6, p. 351–366.
  • Gelius, Leiv-J. (1996). An introduction to trigonometric smoothing. Journal of Seismic Exploration. ISSN 0963-0651. 5, p. 291–301.
  • Iversen, Einar; Vinje, Vetle & Gelius, Leiv-J. (1996). Raytracing in a smooth velocity model. Journal of Seismic Exploration. ISSN 0963-0651. 5.
  • Gelius, Leiv-J. (1996). EM target location. Geophysical Prospecting. ISSN 0016-8025. 44, p. 479–494.
  • Gelius, Leiv-J. & Johansen, Ingvild (1995). Target location based on crosshole radar measurements. In EAGE, . (Eds.), Extended Abstracts Book: 57th EAGE Conference and Technical Exhibition, Glasgow , Scotland. EAGE. ISSN 9789073781061.
  • Gelius, Leiv-J. (1995). Fluid leakage from a buried steel drum - a controlled field experiment in environmental tomography, Process tomography 1995. Implementation for industrial proceses. University of Manchester Institute of Science and Technology (UMIST). ISSN 0952316528.
  • Gelius, Leiv-J. (1995). Limited view diffraction tomography in a non-uniform background. Geophysics. ISSN 0016-8033. 60, p. 580–588.
  • Gelius, Leiv-J. (1995). A sample of controlled experiments in diffraction tomography. Geophysical Prospecting. ISSN 0016-8025. 43, p. 31–50.
  • Gelius, Leiv-J. (1995). Generalized acoustic diffraction tomography. Geophysical Prospecting. ISSN 0016-8025. 43, p. 3–29.
  • Sponheim, Nils; Gelius, Leiv-J.; Johansen, Ingvild & Stamnes, Jakob J. (1994). Ultrasonic tomography of biological tissue. Ultrasonic imaging (Print). ISSN 0161-7346. 16, p. 19–32.
  • Gelius, Leiv-J. (1992). Acoustical imaging of tomographic measurements in a complex model. In EAGE, . (Eds.), Extended Abstract Book: 54th EAGE Conference and Technical Exhibition, Paris, France. EAGE. ISSN 9789073781030.
  • Stamnes, Jakob J.; Gelius, Leiv-J.; Johansen, Ingvild & Sponheim, Nils (1992). Diffraction tomography applications in seismic and medicine, Inverse Problems in Scattering and Imaging. Adam Hilger. ISSN 0750301430.
  • Gelius, Leiv-J. & Stamnes, Jakob J. (1991). Iterative geophysical diffraction tomography. In EAGE, . (Eds.), Extended Abstracts Book: 53rd EAGE Conference and Technical Exhibition, Florence, Italy. EAGE. ISSN 9789073781030.
  • Johansen, Ingvild; Gelius, Leiv-J.; Spjelkavik, Bjørn; Sponheim, Nils & Stamnes, Jakob J. (1991). Exact and approximate scattering data for testing the filtered backpropagation (FBP) and hybrid FBP reconstruction algorithm, Acoustical Imaging 19. Plenum Publishing. ISSN 978-0-306-44198-1.

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  • Gelius, Leiv-J. & Johansen, Tor Arne (2010). Petroleum Geophysics. UniGEO as. ISBN 978-82-93099-00-0. 660 p.

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  • Greiner, Thomas Larsen; Kolbjørnsen, Odd; Lie, Jan Erik; Nilsen, Espen Harris; Evensen, Andreas Kjelsrud & Gelius, Leiv-J. (2019). Cross-streamer wavefield interpolation using deep convolutional neural network.
  • Slang, Sigmund; Sun, Jing; Elboth, Thomas; McDonald, Steven & Gelius, Leiv-J. (2019). Using Convolutional Neural Networks for Denoising and Deblending of Marine Seismic Data. EAGE Expanded Abstracts. doi: 10.3997/2214-4609.201900844.
  • Tømmerbakke, Ronny; Johansen, Tor Arne; Ruud, Bent Ole & Gelius, Leiv-J. (2018). Flexural Wave Attenuation in X-T Domain by Complementary Ensemble Empirical Mode Decomposition.
  • Tømmerbakke, Ronny; Johansen, Tor Arne; Gelius, Leiv-J. & Ruud, Bent Ole (2018). Ensemble Empirical Mode Decomposition in X-T domain: A novel approach to improve data quality in seismic acquisition on sea-ice.
  • Shantsev, Daniil; Babakhani, A.; Gelius, Leiv-J. & Nerland, E.A. (2018). How Repeatable 4D CSEM Surveys Need To Be?
  • Gelius, Leiv-J. (2018). Presentation of geophysical research activities at the University of Oslo.
  • Zhao, Hao; Gelius, Leiv-J. & Tygel, Martin (2017). Pre-stack Fourier Mixed-Domain (FMD) Depth Migration.
  • Zhao, Hao; Gelius, Leiv-J. & Tygel, Martin (2015). A New Generalized Screen Propagator for Wave Equation Depth Migration. EAGE Expanded Abstracts. doi: 10.3997/2214-4609.201412786.
  • Faccipieri, J. H.; Gelius, Leiv-J. & Tygel, Martin (2013). Diffraction separation based on perturbed CRS attributes.
  • Gelius, Leiv-J. & Tygel, Martin (2013). The cost function used in 3D mCSEM inversion – is the Born approximation valid?
  • Gelius, Leiv-J. & Tygel, Martin (2013). The 2D incremental ray-propagator.
  • Berthelot, Angélique; Solberg, Anne H Schistad; Morisbak, Erlend & Gelius, Leiv-J. (2012). 3D segmentation of salt using texture attributes.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J.; Faccipierri, Jorge H. & Tygel, Martin (2012). 2-D pre- and post-stack diffraction separation and imaging.
  • Solberg, Anne H Schistad; Gelius, Leiv-J.; Jensen, Are Charles & Heeremans, Michel (2012). Phase attributes by considering local 3D structure orientation.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2011). Diffraction separation using the CRS technique: A field data application.
  • Gelius, Leiv-J. (2010). Diffraction-limited imaging and beyond.
  • Gelius, Leiv-J. (2009). Time-reversal and super-resolution in case of two transceiver arrays: generalized DORT.
  • Gelius, Leiv-J. (2007). A rock-physics approach to Sea Bed Logging (SBL) modelling/inversion.
  • Jensen, Erling Hugo; Johansen, Tor Arne & Gelius, Leiv-J. (2006). Læreverk og læringssystem i ett. En geovitenskapelig læringsplattform. UniGEM. Forum for fjernundervisning. ISSN 1503-7770. 1.
  • Gelius, Leiv-J. (2003). Introduction to seismic processing.
  • Sjøberg, Thomas A.; Gelius, Leiv-J. & Lecomte, I. (2003). 2-D deconvolution of seismic image blur. doi: 10.1190/1.1817453.
  • Gelius, Leiv-J.; Lecomte, I. & Hamran, Svein-Erik (2002). The concept of Local Parabolic-Wave Imaging (LpI)in PSDM doi: 10.1190/1.1816862.
  • Hamran, Svein-Erik; Lecomte, I. & Gelius, Leiv-J. (2002). GPR processing using local Plane-wave Imaging.
  • Lecomte, I.; Hamran, Svein-Erik; Tabti, Hocine & Gelius, Leiv-J. (2001). New Insights in migration Through analogies between Generalized Diffraction Tomography and Synthetic Aperture Radar. doi: 10.1190/1.1816279.
  • Gelius, Leiv-J. & Lecomte, Isabelle (1998). The resolution function in linearized Born and Kirchhoff Inversion.
  • Lecomte, Isabelle & Gelius, Leiv-J. (1998). Have a look at the resolution function of prestack depth migration for any model, survey and wavefields. doi: 10.1190/1.1820082.
  • Gelius, Leiv-J.; Westerdahl, Harald & Kong, F.N. (1997). Modelling and imaging within the diffraction limit with application in engineering geophysics.
  • Johansen, Ingvild & Gelius, Leiv-J. (1995). Maximum likelihood object location employing magnetometer and radar surface data.
  • Stamnes, Jakob J.; Wedberg, Torolf C. & Gelius, Leiv-J. (1995). Tomographic Reconstruction From Real Data.
  • Sponheim, Nils; Johansen, Ingvild; Stamnes, Jakob J. & Gelius, Leiv-J. (1991). Ultrasonic tomography for breastcancer scanning.
  • Gelius, Leiv-J. & Rathy, Sanchya (2020). Separation of Diffractions from Reflections by the Double Square Root Operator. UiO.
  • Thorkildsen, Vemund Stenbekk; Gelius, Leiv-J.; Harris Nilsen, Espen; Kjelsrud Evensen, Andreas & Lie, Jan Erik (2019). Separation of diffractions by diffraction-stacking and Plane-Wave Destruction filtering. UiO.
  • Losnedahl, Sander Wågønes; Gelius, Leiv-J.; Sollner, Walter; Asgedom, Endrias Getachew & Orji, Okwudili Chuks (2019). Marine Vibrators: Synthetic Data Study. UiO.
  • Slang, Sigmund; Gelius, Leiv-J. & Elboth, Thomas (2019). Attenuation of Seismic Interference Noise with Convolutional Neural Networks. UiO.
  • Turquais, Pierre; Sollner, Walter; Asgedom, Endrias Getachew; Gelius, Leiv-J. & Maupin, Valerie (2018). Dictionary learning and sparse representations for denoising and reconstruction of marine seismic data. Unipub UiO.
  • Waldeland, Anders U.; Solberg, Anne H Schistad & Gelius, Leiv-J. (2018). Seismic image analysis for applications related to iterative 3D velocity model building. Unipub UiO.
  • Grønhaug, Elise; Gelius, Leiv-J. & Elboth, Thomas (2018). Investigate noise attenuation by slope-preserving filtering. UiO.
  • Ordonez, Alba; Söllner, Walter; Klüver, Tilman & Gelius, Leiv-J. (2016). Subsurface imaging using multiples from amplitude-normalized separated wavefields: Application to marine towed-streamer data. Unipub, UiO.
  • Gebregergs, Hagos G.; Gelius, Leiv-J. & Maupin, Valerie (2016). Compensation of absorption effects in seismic data. UiO.
  • Magnussen, Fredrik; Gelius, Leiv-J. & Sanches, Charlotte (2015). Deblending of seismic multi-component data. UiO.
  • Babakhani, Amir; Gelius, Leiv-J.; Shantsev, Daniil & Maupin, Valerie (2015). Repeatabiliy and Detectability Requirements for 4D CSEM surveys. UiO.
  • Grendaite, Milda; Gelius, Leiv-J. & Elboth, Thomas (2014). Identifying Seismic Interference Noise based on Local Dip Filtering. UiO.
  • Fetene, Deneke Admasu; Gelius, Leiv-J. & Vinje, Vetle (2014). A noise model for shallow water North Sea. UiO.
  • Umar, Muhammad; Gelius, Leiv-J. & Øverås, Rune (2014). Separation and attenuation of diffractions and their multiples. UiO.
  • Haghighi, Elyas; Gelius, Leiv-J.; Elboth, Thomas & Sanches, Charlotte (2014). Characterizing Seismic Interference from Seismic Multi-component data. UiO.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J.; Austeng, Andreas & Holm, Sverre (2012). On the use of super-resolution algorithms in seismic: Application within diffraction separation and imaging. Unipub UiO.
  • Orji, Okwudili Chuks; Sollner, Walter & Gelius, Leiv-J. (2012). Sea surface height estimation for dual-sensor towed streamer. Unipub UiO.
  • Mahmoud, Uzma; Gelius, Leiv-J. & Elboth, Thomas (2012). Investigating different approaches of denoising seismic data. UiO.
  • Lindstrøm, Pia M.; Gelius, Leiv-J. & Zheng, Haishan (2012). Diffracted noise attenuation in seismic data. UiO.
  • Javed, Muhammad Waqas & Gelius, Leiv-J. (2012). Separation of reflections from diffractions using the CRS-technique. UiO.
  • Storbakk, Steffen; Gelius, Leiv-J.; Sanches, Charlotte & Rieder, Mark (2012). De-noising of marine seismic data. UiO.
  • Jensen, Erling Hugo; Johansen, Tor Arne & Gelius, Leiv-J. (2011). Methods for improving production of elastic, electric and reservoir properties. UiB.
  • Saeed, Baseem; Gelius, Leiv-J. & Hoeber, Henning (2011). De-noising Seismic Data by Empirical Mode Decomposition. UiO.
  • Hamid, Abdul; Gelius, Leiv-J. & Klüver, Tilman (2011). Comparison/Sensitivity Analysis of Various Deghosting Methods. UiO.
  • Li, Miao; Gelius, Leiv-J. & Sandvin, Ottar (2010). Fresnel-based infill analysis and image quality. UiO.
  • Wang, Zhong; Gelius, Leiv-J. & Kong, Fannian (2009). Investigating the Electric Properties of a Silicliclastic reservoir based on rock-physics modelling and Laboratory experiments. Unipub, UiO.
  • Presterud, Ida Vik; Gelius, Leiv-J. & Li, Xia-Ping (2009). Time frequency de-noising of seismic data. UiO.
  • Orji, Okwudili Chuks; Sollner, Walter & Gelius, Leiv-J. (2009). Sea imaging from a dual sensor streamer data: A feasibility study. UiO.
  • Yaqoob, Muhammad Junaid; Gelius, Leiv-J.; Kaschwich, Tina & Lecomte, Isabelle (2009). Modeling by demigration: A feasibility study. UiO.
  • Hofstad, Marcus; Gelius, Leiv-J. & Austeng, Andreas (2008). Time-reversal imaging. UiO.
  • Raja, Usman Zaheer; Gelius, Leiv-J. & Sandvin, Ottar (2008). Use of Multiples in VSP Depth Imaging. UiO.
  • Sultan, Iftikhar; Gelius, Leiv-J. & Vinje, Vetle (2008). The sensitivity of residual moveout (RMO) on migration parameters. UiO.
  • Stensbye, Lars & Gelius, Leiv-J. (2007). Processing of a regional deep seismic profile from the South-Western Barents Sea. UiO.
  • Gelius, Leiv-J. & Westerdahl, Harald (2006). SBL imaging. A feasibility study. Norwegian Geotechnical Institute (NGI).
  • Laurain, Renaud; Vinje, Vetle & Gelius, Leiv-J. (2006). Simulation and correction of amplitude anomalies in 3D seismic data. Unipub UiO.
  • Møllerup Skaten, Maren Kristin; Nystuen, Johan Petter & Gelius, Leiv-J. (2006). The Lillehammer Submarine Fan Complex. UiO.
  • Gelius, Leiv-J. (2005). SBL - reflection study. Multicomponent processing of EM data. Norwegian Geotechnical Institute (NGI).
  • Hellman, Thomas & Gelius, Leiv-J. (2005). Fresnel aperture pre-stack depth migration. UiO.
  • Gelius, Leiv-J. (2003). Seismic Signal Analysis. Unipub forlag.
  • Gelius, Leiv-J. (2002). Guide Wave Monitoring of Oil Production. Performance test of the FDFD-method. Norwegian Geotechnical Institute (NGI).
  • Sjøberg, Thomas; Gelius, Leiv-J. & Lecomte, Isabelle (2002). Deconvolution of seismic images based on image processing techniques. UiO.
  • Gelius, Leiv-J. (2001). 2-D electromagnetic wave-equations. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (2001). Frequency domain modelling. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. & Kong, Fannian (2001). Guide Wave Monitoring of Oil Production. 1-D monochromatic EM-wave modelling. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. & Kong, Fannian (2001). Guide Wave Monitoring of Oil Production. Frequency domain modelling. . Norwegian Geotechnical Institute (NGI).
  • Kong, Fannian; Viken, Inge; Gelius, Leiv-J. & Iwe, Harald (2000). Guide waves III. Technical development of OWC monitoring tool using guide waves. Norwegian Geotechnical Institute (NGI).
  • Olsen, Heidi J & Gelius, Leiv-J. (2000). Use of resolution functions in prestack migration. UiO.
  • Westerdahl, Harald; Viken, Inge; Gelius, Leiv-J. & Kong, Fannian (1999). Seabed Logging. 2D Finite difference modeling and object recognition. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1998). 3-D orientation of reflecting planes based on VSP measurements - theoretical study. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. & Westerdahl, Harald (1998). Tunnel seismic. Inversion of image point transformed VSP data - a synthetic example. Norwegian Geotechnical Institute (NGI).
  • Linnestad, Brita & Gelius, Leiv-J. (1998). Curved ray tomography with Fermat stabilizer. UiO.
  • Gelius, Leiv-J. (1997). High Resolution Seabed Imaging. Acoustic scattering from a sphere. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1997). Studentstøtte tomografi. Teoretisk bakgrunn for stråletomografi. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1997). Studentstøtte tomografi. Testprogram for tomograf. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1997). High-resolution Seismic Seabed Imaging. Seismic noise computations. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1997). High resolution Seabed. Acoustic scattering from a cylinder. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1996). SPHERE.FOR A program for computing scattered data from a sphere. Exact formulation. Time-domain implementation. Norwave Development as.
  • Gelius, Leiv-J. (1996). SEABED IMAGING. Bettoni Quarry test site: simulations of the geophysical data response. Norwave Development as.
  • Gelius, Leiv-J. (1996). NOISEGEN. A program for generating seismic noise. Norwave Development as.
  • Gelius, Leiv-J. (1996). CYLIND.FOR A program for computing scattered data from a circular cylinder. Exact formulation. Time-domain implementation. Norwegian Geotechnical Institute (NGI).
  • Gelius, Leiv-J. (1995). Geophysical Diffraction Tomography. Phase 2 & Final Report. Profit Program. Norwave Development as.
  • Sætermo, Inger Anne F. & Gelius, Leiv-J. (1994). Target characterization: A comparison between diffraction tomography and maximum likelihood estimation. Norwegian Institute of Technology (NTH).
  • Gelius, Leiv-J. (1992). Asymptotic diffraction theory with applications in tomography. Dr.techn. thesis. NTH.

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Published Dec. 10, 2013 7:55 PM - Last modified Mar. 22, 2021 11:34 AM

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