Academic article

• Jokhongir Khayrullaev; Einar Iversen; Morten Jakobsen et al. (2026). Estimation of interval P-wave velocities from Dix slowness using implicit neural representation. (external link)
• Einar Iversen; Håvar Gjøystdal (1996). Event-oriented velocity estimation based on prestack data in time or depth domain. (external link)
• Vetle Vinje; Einar Iversen; Ketil Åstebøl et al. (1996). Estimation of multivalued arrivals using wavefront construction - Part I. (external link)
• Vetle Vinje; Einar Iversen; Håvar Gjøystdal (1993). Traveltime and amplitude estimation using wavefront construction. (external link)
• Einar Iversen; Bjørn Ursin; Teemu Saksala et al. (2019). Higher-order Hamilton–Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in Cartesian coordinates. (external link)
• Thomas de Jonge; Vetle Vinje; Gordon Poole et al. (2023). Deghosting dual-component streamer data using demigration-based supervised learning. (external link)
• Einar Iversen; Bjørn Ursin; Maarten V. de Hoop (2018). Higher-order extrapolation of traveltime and geometrical spreading in anisotropic heterogeneous media. (external link)
• Einar Iversen; M Tygel; Bjørn Ursin et al. (2012). Kinematic time migration and demigration of reflections in pre-stack seismic data. (external link)
• M Tygel; Bjørn Ursin; Einar Iversen et al. (2012). Estimation of geological dip and reflector curvature from zero-offset seismic reflections in heterogeneous anisotropic media. (external link)
• Vetle Vinje; Einar Iversen; Ketil Åstebøl et al. (1996). Estimation of multivalued arrivals using wavefront construction - Part II: Tracing and interpolation. (external link)
• Maarten V. de Hoop; Sean F. Holman; Einar Iversen et al. (2015). Recovering the isometry type of a Riemannian manifold from local boundary diffraction travel times. (external link)
• Yury Zabegaev; Eirik Keilegavlen; Einar Iversen et al. (2024). Automated linear solver selection for simulation of multiphysics processes in porous media. (external link)
• Saskia Tschache; Vetle Vinje; Einar Iversen (2022). On the accuracy and spatial sampling of finite-difference modelling in discontinuous models. (external link)
• Saskia Tschache; Vetle Vinje; Jan Erik Lie et al. (2023). Quantifying amplitude-variation-with-offset uncertainties related to calcite-cemented beds using a Monte Carlo simulation. (external link)
• Maarten V. de Hoop; Sean F Holman; Einar Iversen et al. (2014). Reconstruction of a conformally euclidean metric from local boundary diffraction travel times. (external link)
• Vlatislav Cerveny; Einar Iversen; Ivan Psencik (2012). Two-point paraxial traveltimes in an inhomogeneous anisotropic medium. (external link)
• Håvar Gjøystdal; Einar Iversen; Isabelle Lecomte et al. (2007). Improved applicability of ray tracing in seismic acquisition, imaging, and interpretation. (external link)
• Thomas de Jonge; Vetle Vinje; Gordon Poole et al. (2022). De-bubbling Seismic Data using a Generalized Neural Network. (external link)
• Bjørn Ursin; Martin Tygel; Einar Iversen (2009). SS-traveltime parameters from PP and PS reflections. (external link)
• Morten Jakobsen; Ivan Psencik; Einar Iversen et al. (2017). On the parametrization of seismic anisotropy for ray-Born inversion. (external link)
• Morten Jakobsen; Ivan Pšenčík; Einar Iversen et al. (2020). Transition operator approach to seismic full-waveform inversion in arbitrary anisotropic elastic media. (external link)
• Thomas de Jonge; Vetle Vinje; Peng Zhao et al. (2022). Source and receiver deghosting by demigration-based supervised learning. (external link)
• Einar Iversen; Bjørn Ursin; Teemu Saksala et al. (2021). Higher-order Hamilton–Jacobi perturbation theory for anisotropic heterogeneous media: transformation between Cartesian and ray-centred coordinates. (external link)
• Einar Iversen; Bjørn Ursin; Teemu Saksala et al. (2019). Higher-order dynamic ray tracing in ray-centred coordinates. (external link)
• Hao Zhao; Anders U. Waldeland; Dany Rueda Serrano et al. (2020). Time-migration velocity estimation using Fréchet derivatives based on nonlinear kinematic migration/demigration solvers. (external link)
• Ujjwal Shekhar; Morten Jakobsen; Einar Iversen et al. (2024). Microseismic wavefield modelling in anisotropic elastic media using integral equation method. (external link)
• Einar Iversen; Bjørn Ursin; Teemu Saksala et al. (2021). Higher-order Hamilton–Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in ray-centred coordinates. (external link)
• Saskia Tschache; Vetle Vinje; Jan Erik Lie et al. (2024). Estimation of net-to-gross ratio and net pay from seismic amplitude-variation-with-offset using Bayesian inversion. (external link)
• Martin Tygel; Bjørn Ursin; Einar Iversen et al. (2012). Estimation of geological dip and curvature from time-migrated zero-offset reflections in heterogeneous anisotropic media. (external link)
• Umar bin Waheed; Ivan Psencik; Vlatislav Červený et al. (2013). Two-point paraxial traveltime formula for inhomogeneous isotropic and anisotropic media: Tests of accuracy. (external link)

Conference poster

• Jokhongir Khayrullaev; Einar Iversen; Morten Jakobsen et al. (2025). Estimation of interval P-wave velocities from Dix velocities using a neural-network parameterization. (external link)
• Jokhongir Khayrullaev; Einar Iversen; Morten Jakobsen et al. (2025). Estimation of the P-wave Velocity Model from Dix Velocities Using a Neural Network Parameterization. (external link)

Conference lecture

• Ujjwal Shekhar; Morten Jakobsen; Inga Berre et al. (2023). Fast integral equation method for microseismic wavefield modelling in anisotropic elastic media.. (external link)
• Einar Iversen; Tina Kaschwich (2016). Twin wavefront construction approach to simulation of shear waves in transversely isotropic layered media. (external link)
• Bjarte Hannisdal; Einar Iversen (2018). Data Analysis in Geosciences: Fostering Computational Learning. (external link)
• Einar Iversen; Bjørn Ursin; Maarten V. de Hoop (2018). Higher-order extrapolation of traveltime and geometrical spreading in anisotropic heterogeneous media. (external link)
• Einar Iversen; Bjørn Ursin; Maarten V. de Hoop (2018). Higher-order Dynamic Ray Tracing for Extrapolation of Traveltime and Geometrical Spreading. (external link)
• Einar Iversen; Bjarte Hannisdal (2018). På vei mot mer studentorientert undervisning og læring i geostatistikk. (external link)
• Hao Zhao; Anders U. Waldeland; Dany Rueda Serrano et al. (2018). Time-migration Tomography based on Reflection Slopes in Pre-stack Time-migrated Seismic. (external link)
• Einar Iversen; Bjørn Ursin; Maarten V. de Hoop (2018). Higher-order Hamilton-Jacobi theory with applications for 3D heterogeneous anisotropic media. (external link)
• Einar Iversen; Bjørn Ursin; Maarten V. de Hoop (2017). Higher-order Hamilton-Jacobi perturbation equations for anisotropic media. (external link)
• Morten Jakobsen; Ivan Psencik; Einar Iversen et al. (2017). On the Parameterization of Seismic Anisotropy in Elastic Waveform Inversion - The HTI Case. (external link)
• Einar Iversen; Bjørn Ursin; Teemu Saksala et al. (2019). Higher-order Hamilton-Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in ray-centred coordinates. (external link)
• Einar Iversen; Bjørn Ursin; Teemu Saksala et al. (2019). Higher-order Hamilton-Jacobi perturbation theory for anisotropic heterogeneous media: transformation between Cartesian and ray-centred coordinates. (external link)
• Einar Iversen (2020). Combining ray theory with full-wave numerical methods. (external link)
• Bjørn Ursin; Martin Tygel; Einar Iversen (2009). SS-traveltime parameters from PP- and PS-reflections. (external link)
• Xingguo Huang; Morten Jakobsen; Ru-Shan Wu et al. (2019). Modeling and inversion of seismic data by combining asymptotic, renormalization and homotopy methods. (external link)
• Hao Zhao; Anders Ueland Waldeland; Dany Rueda Serrano et al. (2017). Time-migration tomography based on reflection slopes, a first test. (external link)

Research report

• Leiv-J. Gelius; Jakob J. Stamnes; Hans Magne Pedersen et al. (1986). 3D seismic diffraction modelling. Main project.. (external link)

Academic book chapter

• U. bin Waheed; T. Alkhalifah; T. Psencik et al. (2012). Two-point Paraxial Traveltime in inhomogeneous Isotropic/Anisotropic Media - Tests of Accurancy. (external link)

Master’s thesis

• Einar Iversen (1984). 3-D velocity inversion by use of kinematic and dynamic ray-tracing. Cand. scient thesis ( and NORSAR Tech. Rep. 1/83, December 1983). (external link)

Doctoral thesis (PhD)

• Einar Iversen (2002). From perturbation to propagation of seismic isochrons. Dissertation for the degree Doctor Philosophiae. (external link)

Lecture

• Einar Iversen; Helene Meling Stemland (2019). Hva er geofysikk? Hvor kan jeg få jobb?. (external link)
• Einar Iversen (2020). The Geophysics Group at GEO: Presentation at the Bachelor student’s event. (external link)

Conference abstract

• Hao Zhao; Anders U. Waldeland; D. Rueda Serrano et al. (2018). Time-migration Tomography based on Reflection Slopes in Pre-stack Time-migrated Seismic Data. (external link)

See a complete overview of publications in NVA.