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).
  • Optimizing the use of marine seismic sources. Industrial PhD-project in collaboration with CGG (NFR, 2019-2022).
  • Accelerating CSEM technology for efficient and quantitative CO2 monitoring (CLIMIT program, 2019-2022) (1 PhD). 
  • 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.

  • 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 (ed.),  SEG Technical Program Expanded Abstracts 2019.  SEG.  ISBN 0916160009.  Extended Abstract. Show summary
  • Hlebnikov, Volodya; Elboth, Thomas; Vinje, Vetle & Gelius, Leiv-J. (2019). Onboard de-noise processing for improved towed marine seismic acquisition efficiency, In . SEG (ed.),  SEG Technical Program Expanded Abstracts 2019.  SEG.  ISBN 0916160009.  Extended Abstract.
  • Losnedahl, Sander Wågønes; Orji, Okwudili Chuks; Gelius, Leiv-J. & Sollner, Walter (2019). Marine vibrator: Source wavefield modeling, In . SEG (ed.),  SEG Technical Program Expanded Abstracts 2019.  SEG.  ISBN 0916160009.  Extended Abstract.
  • Sun, Jing; Slang, Sigmund; Elboth, Thomas; Greiner, Thomas Larsen; McDonald, Steven & Gelius, Leiv-J. (2019). A convolutional neural network approach to deblending seismic data. Geophysics.  ISSN 0016-8033.
  • 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.
  • 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), s 1163- 1183 . doi: 10.1111/1365-2478.12740 Show summary
  • 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, s 118- 127 . doi: 10.1016/j.jappgeo.2019.06.009
  • 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), s V81- V96 . doi: 10.1190/geo2018-0160.1
  • Shantsev, Daniil; Nerland, E.A.; Babakhani, Amir & Gelius, Leiv-J. (2018). Relaxed repeatability requirements for 4D marine CSEM: Inversion study., In  SEG Technical Program Extended Abstract 2018.  SEGEAB.  ISBN 978-5-8670-8577-3.  Extended Abstract.  s 934 - 938
  • 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), s V263- V282 . doi: 10.1190/geo2017-0694.1
  • 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), s 529- 537 . doi: 10.1190/tle37070529.1 Show summary
  • 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), s O1- O13 . doi: 10.1190/GEO2017-0113.1 Full text in Research Archive. Show summary
  • 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), s V271- V282 . doi: 10.1190/geo2015-0525.1
  • 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), s S101- S117 . doi: 10.1190/GEO2015-0385.1
  • Pedersen, H M; Gelius, Leiv-J. & Stamnes, J J (2016). Numerical and Physical Modeling of Diffractions, In Kamill D. Klem-Musatov; H Hoeber; M Pelissier & T J Moser (ed.),  Seismic Difraction.  Society of Exploration Geophysicists (SEG).  ISBN 9781560803171.  Chapter 3.
  • Chen, Wei-Ying; Xue, G.Q.; Muhammad, Younis Khan; Gelius, Leiv-J.; Zhou, Nan-Nan; Li, Hai & Zhong, Hua-Sen (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.  ISSN 0033-4553.  172(6), s 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), s 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), s 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), s 47- 56 . doi: 10.2113/JEEG20.1.47
  • 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, s 75- 83 . doi: 10.1016/j.jappgeo.2015.02.026
  • Faccipieri, J. H.; Coimbra, T.A.; Gelius, Leiv-J. & Tygel, M. (2014). A CRS-based Heterogeneity Attribute, In EAGE2014 (ed.),  Workshop Proceedings. 76th EAGE Conference & Exhibition.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-90-3.  WS11-E01.
  • 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 (ed.),  Workshop Proceedings. 76th EAGE Conference & Exhibition.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-90-3.  WS11-D01.
  • Gelius, Leiv-J. (2014). High-resolution imaging of seismic data: how to combine wave-theory with signal processing techniques, In Org. IEEE (ed.),  2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).  IEEE.  ISBN 978-1-4799-2892-7.  SS5.2.
  • Gelius, Leiv-J. & Tygel, M (2014). On the use of smooth velocities in ray-based stacking and time-migration, In EAGE2014 (ed.),  Conference proceedings. 76th EAGE Conference & Exhibition.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-89-7.  Th G103 16.
  • 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), s S217- S230 . doi: 10.1190/GEO2013-0346.1 Show summary
  • Xue, Guoqiang; Gelius, Leiv-J.; Sakyi, Patrick Asamoah; Zhou, Nan-Nan; Chen, Wei-Ying; Su, B.C.; Li, Hai; Zhong, Hua-Sen & Su, Y.P. (2014). Discovery of a hidden BIF deposit in Anhui province, China by integrated geological and geophysical investigations. Ore Geology Reviews.  ISSN 0169-1368.  63, s 470- 477 . doi: 10.1016/j.oregeorev.2014.05.007
  • 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), s 1178- 1193 . doi: 10.1111/1365-2478.12057
  • Berthelot, Angélique; Solberg, Anne H Schistad & Gelius, Leiv-J. (2013). Texture attributes for detection of salt. Journal of Applied Geophysics.  ISSN 0926-9851.  88, s 52- 69 . doi: 10.1016/j.jappgeo.2012.09.006
  • 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 2013 EAGE (ed.),  Extended abstracts book: 75th EAGE Conference and Technical Exhibition, London, UK.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-48-4.  We_P02_13.
  • Faccipieri, J. H.; Serrano, D. R.; Gelius, Leiv-J. & Tygel, M (2013). Recovering diffractions in CRS stacked sections. First Break.  ISSN 0263-5046.  31, s 27- 31 . doi: 10.3997/1365-2397.2013014
  • 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), s S255- S264 . doi: 10.1190/GEO2013-0047.1
  • 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), s 788- 802 . doi: 10.1111/1365-2478.12014
  • 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
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2013). Sea Surface Reflection Coefficient Estimation, In . SEG (ed.),  SEG Technical Program Expanded Abstracts 2013.  SEGEAB.  ISBN 0-000-00000-0.  Extended Abstract.
  • 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 2013 EAGE (ed.),  Extended abstracts book: 75th EAGE Conference and Technical Exhibition, London, UK.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-48-4.  Th_06_07.
  • 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, s 561- 571 . doi: 10.1111/j.1365-2478.2012.01109.x
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2012). Common-offset diffraction separation and imaging with interpretation, In 2012 EAGE (ed.),  74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-27-9.  YO32.
  • 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), s 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), s 433- 456 . doi: 10.1007/s11200-011-9050-4
  • Gelius, Leiv-J. (2012). Image resolution beyond the classical limit, In Y Wang; A. G. Yagola & C Yang (ed.),  Computational methods for applied inverse problems (inverse and ill-posed problems).  Walter de Gruyter.  ISBN 978-3110259049.  Chapter 17.
  • 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), s P33- P43 . doi: 10.1190/GEO2011-0361.1
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2012). Time-varying sea surface from 3D dual-sensor streamer data, In 2012 EAGE (ed.),  74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-27-9.  AO34.
  • Solberg, Anne H Schistad; Jensen, Are Charles & Gelius, Leiv-J. (2012). Robust 2D Hilbert Atributes of Local Amplitude and Phase, In 2012 EAGE (ed.),  74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-27-9.  EO22. Show summary
  • 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), s 2024- 2034
  • Asgedom, Endrias Getachew; Gelius, Leiv-J.; Austeng, Andreas & Tygel, Martin (2011). A new approach to post-stack diffraction separation, In Klaas Koster (ed.),  Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011 (SEG San Antonio 2011).  Curran Associates, Inc..  ISBN 9781618391841.  KAPITTEL.
  • 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
  • Asgedom, Endrias Getachew; Tygel, Martin & Gelius, Leiv-J. (2011). On separation of reflections and diffractions using a CRS/MUSIC approach, In 2011 EAGE (ed.),  73rd EAGE Conference & Exhibition Incorporating SPE EUROPEC 2011.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-12-5.  KAPITTEL.
  • 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, s 682- 696 . doi: 10.1111/j.1365-2478.2011.00950.x
  • Gelius, Leiv-J. & Asgedom, Endrias Getachew (2011). Diffraction-limited imaging and beyond - the concept of super resolution. Geophysical Prospecting.  ISSN 0016-8025.  59(3), s 400- 421 . doi: 10.1111/j.1365-2478.2010.00928.x
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2011). Imaging time-varying sea surface using dual sensor data, In Klaas Koster (ed.),  Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011 (SEG San Antonio 2011).  Curran Associates, Inc..  ISBN 9781618391841.  KAPITTEL.
  • Solberg, Anne H S; Berthelot, Angélique & Gelius, Leiv-J. (2011). Gabor Filters for Segmentation of Salt Structures, In  Extended Abstracts DVD of the 73rd EAGE Conference & Exhibition incorporating SPE EUROPEC.  European Association of Geoscientists and Engineers.  ISBN 978-90-73834-12-5.  Seismic interpretation: Tools and methods.
  • Solberg, Anne H S & Gelius, Leiv-J. (2011). New texture attributes from local 2D Fourier spectra. Extended Abstract, In Klaas Koster (ed.),  Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011 (SEG San Antonio 2011).  Curran Associates, Inc..  ISBN 9781618391841.  INF P1.  s 1165 - 1169
  • Asgedom, Endrias Getachew & Gelius, Leiv-J. (2010). Multi-frequency phase coherent super-resolution imaging, In 2010 EAGE (ed.),  72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010 Barcelona.  European Association of Geoscientists and Engineers.  ISBN 978-90-73781-86-3.  KAPITTEL.
  • Berthelot, Angèlique; Solberg, Anne H S & Gelius, Leiv-J. (2010). Attributes designed for detection of salt diapirs without well defined boundaries, In 2010 EAGE (ed.),  72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010 Barcelona.  European Association of Geoscientists and Engineers.  ISBN 978-90-73781-86-3.  KAPITTEL.
  • 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), s 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), s 171- 183 . doi: 10.1144/1354-079309-013
  • Wang, Zhong & Gelius, Leiv-J. (2010). Simultaneous measurements of electric and elastic properties of rock samples, In . SEG (ed.),  Society of Exploration Geophysicists International Exposition and Annual Meeting. 80th 2010. (SEG Denver 2010). (6 vols).  Curran Associates, Inc..  ISBN 9781617389801.  KAPITTEL.
  • Berthelot, Angelique; Gelius, Leiv-J. & Solberg, Anne H S (2009). Use of seismic attributes in auto-tracking of salt structures - A feasibility study, In Toru Mogi (ed.),  The 9th SEGJ International Symposium Imaging and Interpretation- Science and Technology for Sustainable Development -.  Society of Exploration Geophysicists of Japan (SEGJ).  ISBN 978-4-938493-06-6.  Paper 47.
  • Gelius, Leiv-J. (2009). 3-D modeling of mCSEM data employing various electromagnetic scattering approximations, In . SEG (ed.),  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.  ISBN 0-00-000000-0.  KAPITTEL.
  • Gelius, Leiv-J. (2009). A Simple Analysis of Diffraction-limited Imaging and Super-resolution, In 2009 EAGE (ed.),  71st EAGE Conference & Exhibition Amsterdam 2009.  European Association of Geoscientists and Engineers.  ISBN 978-90-73781-67-2.  KAPITTEL.
  • Orji, Okwundili Chuks; Sollner, Walter & Gelius, Leiv-J. (2009). Imaging the seasurface using a dual-sensor towed streamer, In . SEG (ed.),  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.  ISBN 0-00-000000-0.  KAPITTEL.
  • 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), s 1009- 1026 . doi: 10.1111/j.1365-2478.2009.00792.x
  • 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 (ed.),  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.  ISBN 0-00-000000-0.  KAPITTEL.
  • 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, s 677- 691 . doi: 10.1111/j.1365-2478.2008.00720.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 (ed.),  Society of Exploration Geophysicists International Exposition and Annual Meeting: 78th 2008 (6 vols) SEG Las Vegas 2008.  Curran Associates, Inc..  ISBN 9781605607856.  KAPITTEL.
  • Gelius, Leiv-J. (2007). Electromagnetic scattering approximations revisited. Electromagnetic Waves.  ISSN 1070-4698.  76, s 75- 94
  • Wang, Zhong & Gelius, Leiv-J. (2007). Modeling of Seabed Logging Data for a Sand-shale Reservoir. PIERS Online.  ISSN 1931-7360.  3(2), s 236- 240
  • Wang, Zhong; Gelius, Leiv-J. & Kong, F.N. (2007). Influence of Temperature on the Seabed-Logging Response of a Sand-shale Reservoir, In 2007 EAGE (ed.),  EAGE 69th Conference & Exhibition - London, UK, 11 -14 June 2007 - Proceedings.  European Association of Geoscientists and Engineers.  ISBN 978-90-73781-54-2.  KAPITTEL.
  • 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), s 580- 584
  • Gelius, Leiv-J. (2006). Multi-component Processing of Sea Bed Logging Data. PIERS Online.  ISSN 1931-7360.  2(6), s 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, s 767- 785
  • Laurain, Renaud; Gelius, Leiv-J.; Vinje, Vetle & Lecomte, Isabelle (2004). A review of 3D illumination studies. Journal of Seismic Exploration.  ISSN 0963-0651.  13, s 17- 37
  • Tabti, Hocine; Gelius, Leiv-J. & Hellmann, Thomas (2004). Fresnel aperture prestack depth migration. First Break.  ISSN 0263-5046.  22, s 39- 46
  • 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, s 115- 121
  • Gelius, Leiv-J.; Lecomte, I. & Tabti, H. (2002). Analysis of the resolution function in seismic prestack depth imaging. Geophysical Prospecting.  ISSN 0016-8025.  50, s 505- 515
  • Gelius, Leiv-J. & Westerdahl, H. (2002). Tunnel seismics - prediction of rock conditions ahead. European journal of environmental and engineering geophysics.  ISSN 1359-8155.  7, s 167- 183
  • Lecomte, I.; Gelius, Leiv-J. & Hamran, Svein-Erik (2002). Local imaging approach and applications, In . EAGE (ed.),  Extended Abstracts Book: 64th EAGE Conference and Technical Exhibition, Florence, Italy.  EAGE.  ISBN 9789073781207.  KAPITTEL.
  • Tabti, H. & Gelius, Leiv-J. (2002). Fresnel Aperture PSDM, In . EAGE (ed.),  Extended Abstracts Book: 64th EAGE Conference and Technical Exhibition, Florence, Italy.  EAGE.  ISBN 9789073781207.  KAPITTEL.
  • 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, In  Lecture Notes in Earth Science: Methods and Applications of Inversion.  Springer Publishing Company.  ISBN 9783540659167.  Kapitel.
  • Gelius, Leiv-J. & Lecomte, Isabelle (1999). The Resolution Function in Prestack Depth Migration, In . EAGE (ed.),  Extended Abstracts Book: 61st EAGE Conference and Technical Exhibition, Helsinki, Finland.  EAGE.  ISBN 90-73781-10-8.  KAPITTEL.
  • Kong, F.N.; Westerdahl, H. & Gelius, Leiv-J. (1998). A very wide bandwidth step frequency GPR for testing concrete rebars, In USA University of Kansas (ed.),  Proceedings of the 7th International Conference on Ground Penetrating Radar.  Univ. of Kansas.  ISBN 9780936352169.  KAPITTEL.
  • 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, s 351- 366
  • Gelius, Leiv-J. (1996). An introduction to trigonometric smoothing. Journal of Seismic Exploration.  ISSN 0963-0651.  5, s 291- 301
  • Gelius, Leiv-J. (1996). EM target location. Geophysical Prospecting.  ISSN 0016-8025.  44, s 479- 494
  • 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. (1995). A sample of controlled experiments in diffraction tomography. Geophysical Prospecting.  ISSN 0016-8025.  43, s 31- 50
  • Gelius, Leiv-J. (1995). Fluid leakage from a buried steel drum - a controlled field experiment in environmental tomography, In  Process tomography 1995. Implementation for industrial proceses.  University of Manchester Institute of Science and Technology (UMIST).  ISBN 0952316528.  Kapitel.
  • Gelius, Leiv-J. (1995). Generalized acoustic diffraction tomography. Geophysical Prospecting.  ISSN 0016-8025.  43, s 3- 29
  • Gelius, Leiv-J. (1995). Limited view diffraction tomography in a non-uniform background. Geophysics.  ISSN 0016-8033.  60, s 580- 588
  • Gelius, Leiv-J. & Johansen, Ingvild (1995). Target location based on crosshole radar measurements, In . EAGE (ed.),  Extended Abstracts Book: 57th EAGE Conference and Technical Exhibition, Glasgow , Scotland.  EAGE.  ISBN 9789073781061.  KAPITTEL.
  • Sponheim, Nils; Gelius, Leiv-J.; Johansen, Ingvild & Stamnes, Jakob J. (1994). Ultrasonic tomography of biological tissue. Ultrasonic imaging (Print).  ISSN 0161-7346.  16, s 19- 32
  • Gelius, Leiv-J. (1992). Acoustical imaging of tomographic measurements in a complex model, In . EAGE (ed.),  Extended Abstract Book: 54th EAGE Conference and Technical Exhibition, Paris, France.  EAGE.  ISBN 9789073781030.  KAPITTEL.
  • Stamnes, Jakob J.; Gelius, Leiv-J.; Johansen, Ingvild & Sponheim, Nils (1992). Diffraction tomography applications in seismic and medicine, In  Inverse Problems in Scattering and Imaging.  Adam Hilger.  ISBN 0750301430.  Kapitel.
  • Gelius, Leiv-J.; Johansen, Ingvild; Sponheim, Nils & Stamnes, Jakob J. (1991). A generalized diffraction tomography algorithm. Journal of the Acoustical Society of America.  ISSN 0001-4966.  89, s 523- 528
  • Gelius, Leiv-J. & Stamnes, Jakob J. (1991). Iterative geophysical diffraction tomography, In . EAGE (ed.),  Extended Abstracts Book: 53rd EAGE Conference and Technical Exhibition, Florence, Italy.  EAGE.  ISBN 9789073781030.  KAPITTEL.
  • Gelius, Leiv-J.; Stamnes, Jakob J. & Heier, Halvor (1991). Pulse distortion in caustic regions. Geophysical Prospecting.  ISSN 0016-8025.  39, s 51- 59
  • 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, In  Acoustical Imaging 19.  Plenum Publishing.  ISBN 978-0-306-44198-1.  Kapitel.
  • Sponheim, Nils; Gelius, Leiv-J.; Johansen, Ingvild & Stamnes, Jakob J. (1991). Quantitative results in ultrasonic tomography for large objects using line sources and curved detector arrays. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.  ISSN 0885-3010.  38, s 370- 379
  • Stamnes, Jakob J. & Gelius, Leiv-J. (1991). Fast and Accurate Computations of Fields Near Caustics and Cusps. Radio Science.  ISSN 0048-6604.  26, s 229- 235
  • Gelius, Leiv-J. & Stamnes, Jakob J. (1990). Diffraction tomography imaging - potentials and problems, In  Scattering in Volumes and Surfaces.  Elsevier.  ISBN 0-444-88529-3.  Kapitel.
  • Pedersen, Hans Magne; Gelius, Leiv-J. & Stamnes, Jakob J. (1989). 3D seismic modelling of edge diffractions. Geophysical Prospecting.  ISSN 0016-8025.  37, s 639- 646

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

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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. Show summary
  • Losnedahl, Sander Wågønes; Gelius, Leiv-J.; Sollner, Walter; Asgedom, Endrias Getachew & Orji, Okwudili Chuks (2019). Marine Vibrators: Synthetic Data Study.
  • Slang, Sigmund; Gelius, Leiv-J. & Elboth, Thomas (2019). Attenuation of Seismic Interference Noise with Convolutional Neural Networks.
  • 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.
  • 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.
  • Gelius, Leiv-J. (2018). Presentation of geophysical research activities at the University of Oslo.
  • Grønhaug, Elise; Gelius, Leiv-J. & Elboth, Thomas (2018). Investigate noise attenuation by slope-preserving filtering.
  • Shantsev, Daniil; Babakhani, A.; Gelius, Leiv-J. & Nerland, E.A. (2018). How Repeatable 4D CSEM Surveys Need To Be?.
  • 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.
  • 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..
  • 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.. Show summary
  • Waldeland, Anders U.; Solberg, Anne H Schistad & Gelius, Leiv-J. (2018). Seismic image analysis for applications related to iterative 3D velocity model building.
  • Zhao, Hao; Gelius, Leiv-J. & Tygel, Martin (2017). Pre-stack Fourier Mixed-Domain (FMD) Depth Migration.
  • Gebregergs, Hagos G.; Gelius, Leiv-J. & Maupin, Valerie (2016). Compensation of absorption effects in seismic data.
  • 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. Show summary
  • Babakhani, Amir; Gelius, Leiv-J.; Shantsev, Daniil & Maupin, Valerie (2015). Repeatabiliy and Detectability Requirements for 4D CSEM surveys.
  • Magnussen, Fredrik; Gelius, Leiv-J. & Sanches, Charlotte (2015). Deblending of seismic multi-component data.
  • 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
  • Fetene, Deneke Admasu; Gelius, Leiv-J. & Vinje, Vetle (2014). A noise model for shallow water North Sea.
  • Grendaite, Milda; Gelius, Leiv-J. & Elboth, Thomas (2014). Identifying Seismic Interference Noise based on Local Dip Filtering.
  • Haghighi, Elyas; Gelius, Leiv-J.; Elboth, Thomas & Sanches, Charlotte (2014). Characterizing Seismic Interference from Seismic Multi-component data.
  • Umar, Muhammad; Gelius, Leiv-J. & Øverås, Rune (2014). Separation and attenuation of diffractions and their multiples.
  • Faccipieri, J. H.; Gelius, Leiv-J. & Tygel, Martin (2013). Diffraction separation based on perturbed CRS attributes.
  • Gelius, Leiv-J. & Tygel, Martin (2013). The 2D incremental ray-propagator.
  • Gelius, Leiv-J. & Tygel, Martin (2013). The cost function used in 3D mCSEM inversion – is the Born approximation valid?.
  • 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.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J.; Faccipierri, Jorge H. & Tygel, Martin (2012). 2-D pre- and post-stack diffraction separation and imaging.
  • Berthelot, Angélique; Solberg, Anne H Schistad; Morisbak, Erlend & Gelius, Leiv-J. (2012). 3D segmentation of salt using texture attributes.
  • Javed, Muhammad Waqas & Gelius, Leiv-J. (2012). Separation of reflections from diffractions using the CRS-technique.
  • Lindstrøm, Pia M.; Gelius, Leiv-J. & Zheng, Haishan (2012). Diffracted noise attenuation in seismic data.
  • Mahmoud, Uzma; Gelius, Leiv-J. & Elboth, Thomas (2012). Investigating different approaches of denoising seismic data.
  • Orji, Okwudili Chuks; Sollner, Walter & Gelius, Leiv-J. (2012). Sea surface height estimation for dual-sensor towed streamer.
  • Solberg, Anne H Schistad; Gelius, Leiv-J.; Jensen, Are Charles & Heeremans, Michel (2012). Phase attributes by considering local 3D structure orientation.
  • Storbakk, Steffen; Gelius, Leiv-J.; Sanches, Charlotte & Rieder, Mark (2012). De-noising of marine seismic data.
  • Asgedom, Endrias Getachew; Gelius, Leiv-J. & Tygel, Martin (2011). Diffraction separation using the CRS technique: A field data application.
  • Hamid, Abdul; Gelius, Leiv-J. & Klüver, Tilman (2011). Comparison/Sensitivity Analysis of Various Deghosting Methods.
  • Jensen, Erling Hugo; Johansen, Tor Arne & Gelius, Leiv-J. (2011). Methods for improving production of elastic, electric and reservoir properties.
  • Saeed, Baseem; Gelius, Leiv-J. & Hoeber, Henning (2011). De-noising Seismic Data by Empirical Mode Decomposition.
  • Gelius, Leiv-J. (2010). Diffraction-limited imaging and beyond.
  • Li, Miao; Gelius, Leiv-J. & Sandvin, Ottar (2010). Fresnel-based infill analysis and image quality.
  • Gelius, Leiv-J. (2009). Time-reversal and super-resolution in case of two transceiver arrays: generalized DORT.
  • Orji, Okwudili Chuks; Sollner, Walter & Gelius, Leiv-J. (2009). Sea imaging from a dual sensor streamer data: A feasibility study.
  • Presterud, Ida Vik; Gelius, Leiv-J. & Li, Xia-Ping (2009). Time frequency de-noising of seismic data.
  • Wang, Zhong; Gelius, Leiv-J. & Kong, Fannian (2009). Investigating the Electric Properties of a Silicliclastic reservoir based on rock-physics modelling and Laboratory experiments.
  • Yaqoob, Muhammad Junaid; Gelius, Leiv-J.; Kaschwich, Tina & Lecomte, Isabelle (2009). Modeling by demigration: A feasibility study.
  • Hofstad, Marcus; Gelius, Leiv-J. & Austeng, Andreas (2008). Time-reversal imaging.
  • Raja, Usman Zaheer; Gelius, Leiv-J. & Sandvin, Ottar (2008). Use of Multiples in VSP Depth Imaging.
  • Sultan, Iftikhar; Gelius, Leiv-J. & Vinje, Vetle (2008). The sensitivity of residual moveout (RMO) on migration parameters.
  • Gelius, Leiv-J. (2007). A rock-physics approach to Sea Bed Logging (SBL) modelling/inversion.
  • Stensbye, Lars & Gelius, Leiv-J. (2007). Processing of a regional deep seismic profile from the South-Western Barents Sea.
  • 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. & Westerdahl, Harald (2006). SBL imaging. A feasibility study.
  • Laurain, Renaud; Vinje, Vetle & Gelius, Leiv-J. (2006). Simulation and correction of amplitude anomalies in 3D seismic data.
  • Møllerup Skaten, Maren Kristin; Nystuen, Johan Petter & Gelius, Leiv-J. (2006). The Lillehammer Submarine Fan Complex.
  • Gelius, Leiv-J. (2005). SBL - reflection study. Multicomponent processing of EM data..
  • Hellman, Thomas & Gelius, Leiv-J. (2005). Fresnel aperture pre-stack depth migration.
  • Gelius, Leiv-J. (2003). Introduction to seismic processing.
  • Gelius, Leiv-J. (2003). Seismic Signal Analysis.
  • Sjøberg, Thomas A.; Gelius, Leiv-J. & Lecomte, I. (2003). 2-D deconvolution of seismic image blur. doi: 10.1190/1.1817453.
  • Gelius, Leiv-J. (2002). Guide Wave Monitoring of Oil Production. Performance test of the FDFD-method..
  • 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.
  • Sjøberg, Thomas; Gelius, Leiv-J. & Lecomte, Isabelle (2002). Deconvolution of seismic images based on image processing techniques.
  • Gelius, Leiv-J. (2001). 2-D electromagnetic wave-equations.
  • Gelius, Leiv-J. (2001). Frequency domain modelling.
  • Gelius, Leiv-J. & Kong, Fannian (2001). Guide Wave Monitoring of Oil Production. 1-D monochromatic EM-wave modelling.
  • Gelius, Leiv-J. & Kong, Fannian (2001). Guide Wave Monitoring of Oil Production. Frequency domain modelling..
  • 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.
  • Kong, Fannian; Viken, Inge; Gelius, Leiv-J. & Iwe, Harald (2000). Guide waves III. Technical development of OWC monitoring tool using guide waves.
  • Olsen, Heidi J & Gelius, Leiv-J. (2000). Use of resolution functions in prestack migration.
  • Westerdahl, Harald; Viken, Inge; Gelius, Leiv-J. & Kong, Fannian (1999). Seabed Logging. 2D Finite difference modeling and object recognition..
  • 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. (1998). 3-D orientation of reflecting planes based on VSP measurements - theoretical study.
  • Gelius, Leiv-J. & Lecomte, Isabelle (1998). The resolution function in linearized Born and Kirchhoff Inversion.
  • Gelius, Leiv-J. & Westerdahl, Harald (1998). Tunnel seismic. Inversion of image point transformed VSP data - a synthetic example..
  • Linnestad, Brita & Gelius, Leiv-J. (1998). Curved ray tomography with Fermat stabilizer.
  • Gelius, Leiv-J. (1997). High Resolution Seabed Imaging. Acoustic scattering from a sphere..
  • Gelius, Leiv-J. (1997). High resolution Seabed. Acoustic scattering from a cylinder..
  • Gelius, Leiv-J. (1997). High-resolution Seismic Seabed Imaging. Seismic noise computations..
  • Gelius, Leiv-J. (1997). Studentstøtte tomografi. Teoretisk bakgrunn for stråletomografi..
  • Gelius, Leiv-J. (1997). Studentstøtte tomografi. Testprogram for tomograf.
  • Gelius, Leiv-J.; Westerdahl, Harald & Kong, F.N. (1997). Modelling and imaging within the diffraction limit with application in engineering geophysics.
  • Gelius, Leiv-J. (1996). CYLIND.FOR A program for computing scattered data from a circular cylinder. Exact formulation. Time-domain implementation..
  • Gelius, Leiv-J. (1996). NOISEGEN. A program for generating seismic noise..
  • Gelius, Leiv-J. (1996). SEABED IMAGING. Bettoni Quarry test site: simulations of the geophysical data response..
  • Gelius, Leiv-J. (1996). SPHERE.FOR A program for computing scattered data from a sphere. Exact formulation. Time-domain implementation.
  • Gelius, Leiv-J. (1995). Geophysical Diffraction Tomography. Phase 2 & Final Report. Profit Program..
  • 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.
  • Sætermo, Inger Anne F. & Gelius, Leiv-J. (1994). Target characterization: A comparison between diffraction tomography and maximum likelihood estimation.
  • Gelius, Leiv-J. (1992). Asymptotic diffraction theory with applications in tomography. Dr.techn. thesis.
  • Sponheim, Nils; Johansen, Ingvild; Stamnes, Jakob J. & Gelius, Leiv-J. (1991). Ultrasonic tomography for breastcancer scanning.
  • Gelius, Leiv-J. & Stamnes, Jakob J. (1990). A controlled field experiment in diffraction tomography.
  • Gelius, Leiv-J. (1989). Geophysical Diffraction Tomography. Software documentation. Phase I..
  • Gelius, Leiv-J. & Stamnes, Jakob J. (1989). Comparison between x-ray tomography and diffraction tomography.
  • Stamnes, Jakob J. & Gelius, Leiv-J. (1989). Rays, catastrophes and uniform asymptotics.

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Published Dec. 10, 2013 7:55 PM - Last modified Oct. 25, 2019 12:47 PM

Projects

  • Improved seismic imaging based on resolution enhancement and pattern recognition