Expanded Abstracts
2019
- Bauer, A., Schwarz, B., Diekmann, L., and Gajewski, D. (2019), Wavefront tomography with enforced diffraction focusing: Second EAGE/PESGB Workshop on Velocities.
- Diekmann, L., Schwarz, B., Bauer, A., and Gajewski, D. (2019), Wavefront tomography for passive seismic data: Second EAGE/PESGB Workshop on Velocities.
- Bauer, A., Schwarz, B., Diekmann, L., and Gajewski, D. (2019). Wavefront tomography with enforced diffraction focusing: 81st EAGE Annual Meeting, London.
- Znak, P., Dell, S., Kashtan, B., and Gajewski, D. (2019), Identification and focusing of edge diffractions with wavefront attributes: 81st EAGE Annual Meeting, London.
2018
- Abakumov, I., Kashtan, B., Gajewski, D. (2018), Time-lapse Data Enhancement and Regularization with Common-Offset CRS Stack: 80th EAGE Annual Meeting, Copenhagen.
- Bauer, A., Schwarz, B., Gajewski, D. (2018), Diffraction Wavefront Tomography - Efficient automated velocity inversion for multi-fold and single-channel data: 80th EAGE Annual Meeting, Copenhagen.
- Bauer, A., Schwarz, B., Werner, T., Gajewski D. (2018), Unsupervised Global Identification of Diffractions based on Local Wavefront Measurements: 80th EAGE Annual Meeting, Copenhagen.
- Bauer, A., Schwarz, B., Werner, T., and Gajewski, D. (2018), An unsupervised strategy for the global tagging of individual diffractions: 88th SEG Annual Meeting, Anaheim.
- Diekmann, L., Schwarz, B., Bauer, A., Gajewski, D (2018), Source Localisation and Joint Velocity Model Building: 80th EAGE Annual Meeting, Copenhagen.
- Diekmann, L., Schwarz, B., Bauer, A., and Gajewski, D. (2018), Simultaneous model building and source localization: A 3D synthetic case study: 88th SEG Annual Meeting, Anaheim.
- Gloeckner, M., Gajewski, D., Klaeschen, D., Muff, D., Berndt, C. (2018), Wavefront tomography with diffraction-only 3D P-cable data: 88th SEG Annual Meeting, Anaheim.
- Li, L., Xie, Y., Gajewski, D., Tan, Y., and Tan, J. (2018), Parameter tuning of differential evolution algorithm for microseismic location: 88th SEG Annual Meeting, Anaheim.
- Walda, J., Vanelle, C., Gajewski, D., Schwarz, B., Wissmath, S. (2018), The Multi-operator Approach - Extending Time Processing to Complex Media: 80th EAGE Annual Meeting, Copenhagen.
- Xie, Y., Yang, Y., and Gajewski, D. (2018), Wavefront-attribute estimation for 3D laterally heterogeneous media: 88th SEG Annual Meeting, Anaheim.
- Znak, P., Kashtan, B., and Gajewski, D. (2018), Velocity model building by geometrical spreading focusing: 88th SEG Annual Meeting, Anaheim.
2017
- Abakumov, I., Schwarz, B., and Gajewski, D. (2017), The Shifted Hyperbola in 3D: 79th EAGE Annual Meeting, Paris.
- Abakumov, I., Schwarz, B., and Gajewski, D. (2017), Normal Moveout in a 3D Auxiliary Medium: 79th EAGE Annual Meeting, Paris.
- Bauer, A., Schwarz, B. and Gajewski, D. (2017), Quantifying Diffracted and Passive Event Location Uncertainties with Local Wavefront Measurements: 79th EAGE Annual Meeting, Paris.
- Diekmann, L., Schwarz, B., Bauer, A. and Gajewski, D. (2017), Approaching Passive Data with the established Active Seismic Toolbox: 79th EAGE Annual Meeting, Paris.
- Li, L., Abakumov, I., Chen, H., Wang, X., Gajewski, D. (2017), Comparison and generalization of correlation-based seismic-source imaging methods: 87th SEG Annual Meeting, Houston.
- Li, L., Xie, Y.J., Chen, H., Wang, X.M., and Gajewski, D. (2017), Improving the Efficiency of Microseismic Imaging with Particle Swarm Optimization: 79th EAGE Annual Meeting, Paris.
- Schwarz, B., Bauer, A. and Gajewski, D. (2017), Automated Single-Channel Data Inversion Using Diffractions: 79th EAGE Annual Meeting, Paris.
- Walda, J., Abakumov, I., and Gajewski, D. (2017), Towards the Full Potential of Multidimensional Stacking: 79th EAGE Annual Meeting, Paris.
- Znak, P., Kashtan, B., and Gajewski, D. (2017), Wavefront tomography by dynamic focusing: 87th SEG Annual Meeting, Houston.
2016
- Bakhtiari Rad, P., Gajewski, D., and Vanelle, C. (2016), Diffraction Separation Based on the Projected First Fresnel Zone: 78th EAGE Annual Meeting, Vienna.
- Bauer, A., Schwarz, B., Lotze, M., Werner, T. and Gajewski, D. (2016), Utilizing Diffractions in Wavefront-based Tomography: 78th EAGE Annual Meeting, Vienna.
- Bauer, A., Schwarz, B. and Gajewski, D. (2016), Improving the resolution of wavefront tomography by utilizing diffractions: 86th SEG Annual Meeting, Dallas.
- Gloeckner, M., Schwarz, B., Vanelle, C., and Gajewski, D. (2016), Kinematic Time Demigration with an Automatically Generated Velocity Model: 78th EAGE Annual Meeting, Vienna.
- Kazei, V., Tessmer, E., Alkhalifah, T. (2016), Efficient deflection angle based filtering for waveform inversion: 7th EAGE Saint Petersburg International Conference and Exhibition, Understanding the Harmony of the Earth's Resources through Integration of Geosciences, Saint Petersburg, Russia.
- Schwarz, B., Bauer, A. and Gajewski, D. (2016), Automatic Joint Location and Velocity Inversion for Passive Seismic Data: 78th EAGE Annual Meeting, Vienna.
- Walda, J., Schwarz, B., and Gajewski, D. (2016), A competitive comparison of multi-parameter stacking approaches: 78th EAGE Annual Meeting, Vienna.
- Walda, J., and Gajewski, D. (2016), Conflicting dips and hard-rock environments: A CRS land data case study: 86th SEG Annual Meeting, Dallas.
- Xie, Y., and Gajewski, D. (2016), Automatic Estimation of the 3D CRS Attributes by a Metaheuristic-based Optimization: 78th EAGE Annual Meeting, Vienna.
- Xie, Y., and Gajewski, D. (2016), Interpolation and regularization with the 3D CRS operator: 86th SEG Annual Meeting, Dallas.
- Xie, Y., and Gajewski, D. (2016), Simultaneous estimation of the 3D CRS attributes by an evolutionary-based Nelder-Mead algorithm: 86th SEG Annual Meeting, Dallas.
- Yang, Y., Vanelle, C., and Gajewski, D. (2016), A New Kinematic Time Demigration Approach Based on the CSP Method: 78th EAGE Annual Meeting, Vienna.
2015
- Bakhtiari Rad, P., Vanelle, C., Gajewski, D., (2015), 3D CRS-based Prestack Diffraction Separation and Imaging: 77th EAGE Annual Meeting, Madrid.
- Bakhtiari Rad, P., Gajewski, D., (2015), 3D CRS-based Prestack Diffraction Separation and Enhancement: 77th EAGE Annual Meeting, Madrid.
- Bakhtiari Rad, P., Gajewski, D., and Vanelle, C., (2015), 3-D Time migration velocity model building using CRS-based pre-stack diffraction separation: 85th SEG Annual Meeting, New Orleans.
- Bauer, A., Schwarz, B., Gajewski, D. (2015), Zero-offset based prediction of common-offset diffraction traveltimes: 77th EAGE Annual Meeting, Madrid.
- Bauer, A., Schwarz, B., Gajewski, D. (2015), Prestack diffraction enhancement using a traveltime decomposition approach: 85th SEG Annual Meeting, New Orleans.
- Bobsin, M., Schwarz, B., Vanelle, C., and Gajewski, D. (2015), Data-driven time migration using a multiparameter approach: 85th SEG Annual Meeting, New Orleans.
- Schwarz, B., Vanelle, C., Gajewski, D. (2015), Shifted Hyperbola Revisited - the two Faces of NMO: 77th EAGE Annual Meeting, Madrid.
- Schwarz, B., Vanelle, C., Wissmath, S., Bauer, A., Gajewski, D. (2015), Efficient Common-Reflection-Surface-Based Prestack Slope Determination for Stereotomography: 85th SEG Annual Meeting, New Orleans.
- Vefagh, M., Duemmong, S., and Gajewski, D. (2015), A zero-offset picking approach for pre-stack multiple attenuation: 85th SEG Annual Meeting, New Orleans.
- Walda, J., Gajewski, D. (2015), Handling the Conflicting Dip Problem in the CRS/iCRS Methods: 77th EAGE Annual Meeting, Madrid.
- Walda, J., Gajewski, D. (2015), Handling the Conflicting Dip Problem in the CRS/iCRS Methods: 77th EAGE Annual Meeting, Madrid.
- Walda, J., Gajewski, D. (2015), Global Optimization of the CRS Operator Using a Genetic Algorithm: 77th EAGE Annual Meeting, Madrid.
- Walda, J., Gajewski, D. (2015), Common-reflection-surface stack improvement by differential evolution and conflicting dip processing: 85th SEG Annual Meeting, New Orleans.
2014
- Ahmed, K. A., Schwarz, B., and Gajewski, D. (2014), Application of the 3D CRS Workflow in Crystalline Rock Environment: 76th EAGE Annual Meeting, Amsterdam.
- Bakhtiari Rad, P., Schwarz, B., Vanelle, C., and Gajewski, D. (2014), Common reflection surface (CRS) based pre-stack diffraction separation: 84th SEG Annual Meeting, Denver.
- Schwarz, B., Vanelle, C., and Gajewski, D. (2014), Auxiliary Media - a Generalized View on Stacking: 76th EAGE Annual Meeting, Amsterdam.
- Schwarz, B., Vanelle, C., and Gajewski, D. (2014), From Zero-offset to Common-offset with Diffractions: 76th EAGE Annual Meeting, Amsterdam.
- Yang, Y., Vanelle, C., and Gajewski, D. (2014), Combining partial time migration and prestack data enhancement: a useful tool for subsalt imaging: 84th SEG Annual Meeting, Denver.
2013
- Abakumov, I., Taganaeva, A., Kashtan, B. M. und Gajewski, D. (2013), Extension of the i-CRS stacking operator for the 3D case: International youth oil and gas forum, Almaty, Kazakhstan.
2012
- Dell, S., Gajewski, D. (2012), Diffraction Traveltime Approximation for an Arbitrary Anisotropic Medium - A Case Study: 74th EAGE Annual Meeting, Copenhagen.
- Dell, S., Gajewski, D., Kashtan, B.M. (2012), Diffraction Traveltime Approximation for an Arbitrary Anisotropic Medium: 15th International Workshop on Seismic Anisotropy, Bahrain.
- Schwarz, B., Vanelle, C., Gajewksi, D., Kashtan, B. (2012), i-CRS: Application of a New Multi-Parameter Stacking Approach to Complex Media: 82nd SEG Annual Meeting, Las Vegas.
- Vanelle, C., Bobsin, M., Schemmert, P., Kashtan, B., Schwarz, B., Gajewski, D. (2012), i-CRS: A new multiparameter stacking operator for anisotropic media: 15th International Workshop on Seismic Anisotropy, Bahrain.
- Vanelle, C., Bobsin, M., Schemmert, P., Kashtan, B., Schwarz, B., Gajewski, D. (2012), RSO: A new multiparameter stacking operator for an/isotropic media: 74th EAGE Annual Meeting, Copenhagen.
2011
- Dell, S., Gajewski, D. (2011), Diffraction imaging based on Common Reflection Surface attributes: 81st SEG Annual Meeting, San Antonio.
- Dell, S., Gajewski, D. (2011), 3-D Velocity model building based on diffractions: 5th Saint Petersburg International Conference and Exhibition.
- Dell, S., Gajewski, D. (2011), 3D CRS-attributes Based Diffraction Imaging: 73rd EAGE Annual Meeting, Vienna.
- Dell, S., Gajewski, D. (2011), Image Ray Tomography: 73rd EAGE Annual Meeting, Vienna.
- Dramsch, J.S., Gajewski, D. (2011), Trace Interpolation with Partial CRS Stacks: 73rd EAGE Annual Meeting, Vienna.
2010
- Baykulov, M., Gajewski, D. (2010), Partial 3D CRS Stack: 72nd EAGE Conference and Exhibition, Barcelona.
- Dell, S., Gajewski, D., Kashtan, B. (2010), Poststack Time Migration Velocity Analysis by CRS Diffraction Stacking: 80th SEG Annual Meeting, Denver.
- Dell, S., Gajewski, D., Vanelle, C. (2010), An automatic time imaging using common scatter point gathers: 80th SEG Annual Meeting, Denver.
- Dell, S., Gajewski, D., Vanelle, C. (2010), Common scatter point data mapping: 72nd EAGE Conference and Exhibition, Barcelona.
- Dell, S., Gajewski, D. (2010), Image incident point tomography - a case study: 80th SEG Annual Meeting, Denver.
- Dell, S., Gajewski, D. (2010), Poststack time migration velocity analysis by CRS diffraction stacking: 72nd EAGE Conference and Exhibition, Barcelona.
- Gajewski, D., Baykulov, M., Duemmong, S. (2010), CRS - More than a stack: A workflow from time to depth: 72nd EAGE Conference and Exhibition, Barcelona.
- Tessmer, E. (2010), Anisotropic reverse-time migration in TTI media: SWLIM VII, Tepla, Czech Republic.
- Tessmer, E. (2010), Reverse-time migration in TTI media: 80th SEG Annual Meeting, Denver.
- Vanelle, C., Kashtan, B., Dell, S., Gajewski, D. (2010), A new stacking operator for curved subsurface structures: 80th SEG Annual Meeting, Denver.
- Zhebel, O., Gajewski, D., Vanelle, C. (2010), Localization of seismic events in 3D media by diffraction stacking: 80th SEG Annual Meeting, Denver.
2009
- Anikiev, D., Gajewski, D., Kashtan, B., Tessmer, E., and Vanelle, C. (2009), Localization of Low-frequency Microtremors by a Modified Diffraction Stack: 71st EAGE Conference and Exhibition, Amsterdam.
- Baykulov, M., Brink, H.-J., Gajewski, D., and Yoon M.-K. (2009), Seismic data enhancement with Common Reflection Surface (CRS) stack method: DGMK/OEGEW-Fruehjahrstagung, Celle, Germany.
- Baykulov, M., Duemmong, S., and Gajewski, D. (2009), An imaging work flow using locally coherent events - a CRS based approach: 71st EAGE Conference and Exhibition, Amsterdam.
- Baykulov, M. and Gajewski, D. (2009), Prestack seismic data enhancement with CRS parameters: 71st EAGE Conference and Exhibition, Amsterdam.
- Duemmong, S., Baykulov, M., and Gajewski, D. (2009), A workflow for the processing of reflection seismic data with CRS attributes: 79th SEG Annual Meeting, Houston.
- Gajewski, D., Baykulov, M., and Duemmong, S. (2009), Ein Workflow fuer die Bearbeitung und Abbildung reflexionsseismischer Daten mit CRS Attributen: DGMK/OEGEW Fruehjahrstagung, Celle, Germany.
- Vanelle, C. and Gajewski, D. (2009), NIP wave tomography for PS-converted waves: 79th SEG Annual Meeting, Houston.
2008
- Baykulov, M., Brink, H.-J., Gajewski, D., Yoon M.-K. (2008), Seismic data enhancement with Common Reflection Surface (CRS) stack method: DGMK/OEGEW-Fruehjahrstagung, Celle, Germany.
- Baykulov, M., Brink, H.-J., Gajewski, D., Yoon M.-K. (2008), Seismic data enhancement with Common Reflection Surface (CRS) stack method: 33rd International Geological Congress, Oslo, Norway.
- Baykulov, M. and Gajewski, D. (2008), Seismic data enhancement with Common Reflection Surface (CRS) stack method: 78th SEG Annual Meeting, Las Vegas.
- Baykulov, M. and Gajewski, D. (2008), Prestack seismic data enhancement with CRS parameters: 70th EAGE Conference and Exhibition, Rome.
- Duemmong, S. and Gajewski, D. (2008), A multiple suppression method via CRS attributes: 78th SEG Annual Meeting, Las Vegas.
- Sommer, K., Vanelle, C., Gajewski, D., Patzig, R. (2008), Seismic Event Localisation in an Anisotropic Environment: 13th International Workshop on Seismic Anisotropy, Winter Park, USA.
2007
- Duemmong, S., Meier, K., Gajewski, D. and Huebscher, C. (2007), Velocity model building: a comparison between prestack stereotomography: 77th SEG Annual Meeting, San Antonio.
- Gajewski, D., Anikiev D., Kashtan B., Tessmer E., Vanelle C. (2007), Source Location by Diffraction Stacking: 69th EAGE Conference and Exhibition, London.
- Gajewski, D., Anikiev D., Kashtan B., Tessmer E., Vanelle C. (2007), Localization of Seismic Events by Diffraction Stacking: 77th SEG Annual Meeting, San Antonio.
- Vanelle C. and Gajewski (2007), Traveltime-Based True-Amplitude Migration in Anisotropic Media: 69th EAGE Conference and Exhibition, London.
- Yoon, M., Baykulov, M., Duemmong, M., Brink, H.J., Gajewski, D. (2007), Application of the Common Reflection Surface (CRS) Stack to Crustal: 69th EAGE Conference and Exhibition, London.
2006
- Gajewski, D., Kashtan, B., Tessmer, E., Vanelle, C. (2006), Source location by back-projection - Location errors due to limited aperture: International Symposium in Applied Geophysics, Campinas, Brazil.
2005
- Gajewski, D., Tessmer, E. (2005), Imaging of passive seismic sources by reverse modeling: 9th International Congress SBGf, Salvador.
- Gajewski, D., Tessmer, E. (2005), Imaging of passive seismic sources by reverse modeling: WIT/EAGE/SEG Workshop on seismic reflection imaging, Seeheim, Germany.
- Tessmer, E., Gajewski, D. (2005), Imaging of passive seismic sources by reverse modeling: Workshop on seismic waves in laterally inhomogeneous media VI, Hruba Skala, Czech Republic.
- Tessmer, E., Gajewski, D. (2005), Seismic event localization by reverse modelling: SPICE-meeting, Smolenice, Slovak Republic.
- Vanelle, C., Spinner, M., Hertweck, T., Jaeger, C., Gajewski, D. (2005), Traveltime-based true-amplitude migration: 9th International Congress SBGf, Salvador.
- Vanelle, C., Spinner, M., Hertweck, T., Jaeger, C., Gajewski, D. (2005), Traveltime-based true-amplitude migration: 67th EAGE Conference and Exhibition, Madrid.
- Vanelle, C., Spinner, M., Hertweck, T., Jaeger, C., Gajewski, D. (2005), Traveltime-based true-amplitude migration: Workshop on seismic waves in laterally inhomogeneous media VI, Hruba Skala, Czech Republic.
- Vanelle, C., Spinner, M., Hertweck, T., Jaeger, C., Gajewski, D. (2005), Traveltime-based true-amplitude migration: WIT/EAGE/SEG Workshop on seismic reflection imaging, Seeheim, Germany.
2004
- Gajewski, D., Tessmer, E. (2004), Reverse modeling for seismic event characterization: AGU Fall Meeting, San Francisco.
- Vanelle, C., Spinner, M., Hertweck, T., Jaeger, C., Gajewski, D. (2004), True-amplitude migration - the traveltime-based strategy: 74th SEG Annual Meeting, Denver.
- Vanelle, C. and Gajewski, D. (2004), Determination of sectorially best-fitting isotropic background media: 74th SEG Annual Meeting, Denver.
- Vanelle, C. and Gajewski, D. (2004), Application of sectorially best-fitting isotropic background media: 74th SEG Annual Meeting, Denver.
2003
- Gajewski, D. (2003), Recent advances in seismic reflection imaging: 12th CCSS Workshop, Mountain Lake Lodge, Virgina.
- Kaschwich, T. and Gajewski, D. (2003), Wavefront-Oriented Ray Tracing in 3D Anisotropic Media: 65th EAGE Conference and Exhibition, Stavanger.
- Soukina, S.M., Gajewski, D., Kashtan, B.M. (2003), Determination of weak anisotropy parameters using traveltimes and polarisations: 65th EAGE Conference and Exhibition, Stavanger.
- Vanelle, C., Dettmer, J., Gajewski, D. (2003), Detection of Caustics and Interpolation of Later-arrival Traveltimes: 8th International Congress SBGf, Rio de Janeiro.
- Vanelle, C., Dettmer, J., Gajewski, D. (2003), Detection of Caustics and Interpolation of Later-arrival Traveltimes: 65th EAGE Conference and Exhibition, Stavanger.
2002
- Coman, R. and Gajewski, D. (2002), Wavefront-oriented ray tracing with optimal ray density: 64th EAGE Conference and Exhibition, Florence.
- Coman, R. and Gajewski, D. (2002), 3-D wavefront-oriented ray tracing: Estimation of traveltimes within cells: 72nd SEG Annual Meeting, Salt Lake City.
- Gajewski, D. and Vanelle, C. (2002), Revisiting NMO again?: 64th EAGE Conference and Exhibition, Florence.
- Gajewski, D. and Vanelle, C. (2002), A general moveout relation for 3-D anisotropic media: 10th International Workshop on Seismic Anisotropy, Tutzing, Germany.
- Menyoli, E., Huebscher, Ch., Gajewski, D., DOBREflection Working Group (2002), CRS stacking for improving of inversion structures in the Donbas Foldbelt: 27th General Assembly EGS, Nice.
- Menyoli, E., Patzig, R., Gajewski, D., DOBREflection Team (2002), Imaging of inverted basin in-fill with the CRS method: 64th EAGE Conference and Exhibition, Florence.
- Menyoli, E.M. and Gajewski, D. (2002), Time migrated CRS images of complex inverted basin structures: 72nd SEG Annual Meeting, Salt Lake City.
- Soukina, S.M., Gajewski, D., Kashtan, B.M. (2002), Linearized quasi-shear wave inversion using QI approximation: 64th EAGE Conference and Exhibition, Florence.
- Soukina, S.M. and Gajewski, D. (2002), Linearized quasi-shear wave inversion using QI approximation: Seminar Day on Diffraction, St. Petersburg.
- Soukina, S.M, Gajewski, D., Kashtan, B.M (2002), Linearized quasi-shear wave inversion using QI approximation: 10th International Workshop on Seismic Anisotropy, Tutzing, Germany.
- Soukina, S.M, Gajewski, D., Kashtan, B.M (2002), Traveltime computation for 3-D anisotropic media by a finite difference perturbation method: 10th International Workshop on Seismic Anisotropy, Tutzing, Germany.
- Vanelle, C. and Gajewski, D. (2002), Traveltime interpolation and geometrical spreading in anisotropic media: 64th EAGE Conference and Exhibition, Florence.
- Vanelle, C. and Gajewski, D. (2002), Amplitude preserving migration in anisotropic media - a traveltime-based strategy: 10th International Workshop on Seismic Anisotropy, Tutzing, Germany.
- Vanelle, C. and Gajewski, D. (2002), Traveltime Interpolation for Kirchhoff Migration in Anisotropic Media: 72nd SEG Annual Meeting, Salt Lake City.
- Vanelle, C. and Gajewski, D. (2002), Determining Geometrical Spreading from Traveltimes in Anisotropic Media: 72nd SEG Annual Meeting, Salt Lake City.
2001
- Coman, R. and Gajewski, D. (2001), 3D traveltime and migration weight computation using wavefront oriented ray tracing: 63rd EAGE Conference and Exhibition, Amsterdam.
- Coman, R. and Gajewski, D. (2001), Estimation of multivalued arrivals in 3-D models using wavefront ray tracing: 71st SEG Annual Meeting, San Antonio.
- Coman, R. and Gajewski, D. (2001), Fast Computation of 3D Traveltimes and Migration Weights Using a Wavefront Oriented Ray Tracing Technique: 2nd WIT Workshop on Seismic True Amplitudes, Karlsruhe, Germany.
- Gajewski, D. and Vanelle, C. (2001), Extending the T^2-X^2 method to 3-D heterogeneous media: 71st SEG Annual Meeting, San Antonio.
- Menyoli, E. and Gajewski, D. (2001), Prestack depth migration-based Poisson's ratio determination using converted waves: 63rd EAGE Conference and Exhibition, Amsterdam.
- Menyoli, E. and Gajewski, D. (2001), Prestack depth migration-based Poisson's ratio determination using converted waves: 71st SEG Annual Meeting, San Antonio.
- Soukina, S., Gajewski, D., Kashtan, B. (2001), Finite-difference perturbation method for 3-D anisotropic media: 63rd EAGE Conference and Exhibition, Amsterdam.
- Vanelle, C. and Gajewski, D. (2001), Traveltime based true amplitude migration with optimized aperture: 2nd WIT Workshop on Seismic True Amplitudes, Karlsruhe, Germany.
- Vanelle, C. and Gajewski, D. (2001), True-amplitude migration of PS converted waves: 63rd EAGE Conference and Exhibition, Amsterdam.
- Vanelle, C. and Gajewski, D. (2001), True-amplitude migration of PS converted waves: 71st SEG Annual Meeting, San Antonio.
- Vanelle, C. and Gajewski, D. (2001), Determining the optimum migration aperture from traveltimes: 63rd EAGE Conference and Exhibition, Amsterdam.
- Vanelle, C. and Gajewski, D. (2001), Determining the optimum migration aperture from traveltimes: 71st SEG Annual Meeting, San Antonio.
2000
- Coman, R. and Gajewski, D. (2000), 3D Wavefront Construction Method with Spherical Interpolation: 62nd EAGE Conference and Exhibition, Glasgow.
- Coman, R. and Gajewski, D. (2000), 3-D multivalued traveltime computation using a hybrid method: 70th SEG Annual Meeting, Calgary.
- Vanelle, C. and Gajewski, D. (2000), True-amplitude migration weights from traveltimes: 62nd EAGE Conference and Exhibition, Glasgow.
- Vanelle, C. and Gajewski, D. (2000), Traveltime based true amplitude migration: 70th SEG Annual Meeting, Calgary.
- Vanelle, C. and Gajewski, D. (2000), Traveltime based true-amplitude migration: Workshop meeting on seismic waves in laterally inhomogeneous media V, Zahradky, Czech Republic.
1999
- Ettrich, N., Kashtan, B., Gajewski, D. (1999), Reference elipsoids for anisotropic media: 61st EAGE Conference and Exhibition, Helsinki.
- Gajewski, D. and Vanelle, C. (1999), Computing Wavefront Characteristics Without Dynamic Ray Tracing: 61st EAGE Conference and Exhibition, Helsinki.
- Vanelle, C. and Gajewski, D. (1999), Determining Geometrical Spreading from Traveltimes: 61st EAGE Conference and Exhibition, Helsinki.
1998
- Ettrich, N. (1998), 3D Finite-Difference Traveltime Computation Using Plane Waves: 60th EAGE Conference and Exhibition, Leipzig.
- Ettrich, N. (1998), FD Eikonal Solver for 3-D Anisotropic Media: 68th SEG Annual Meeting, New Orleans.
- Falk, J., Groenenboom, J. (1998), Numerical Studies on Wave Scattering at Open Fractures: 60th EAGE Conference and Exhibition, Leipzig.
- Falk, J., Tessmer, E., Gajewski, D. (1998), 3-D Cross-Well Seismic Modeling Including the Generation and Scattering of Tube Waves: 68th SEG Annual Meeting, New Orleans.
- Gajewski, D. (1998), Determining the Ray Propagator from Traveltimes: 68th SEG Annual Meeting, New Orleans.
- Lambrecht, A., Gajewski, D., Oncken, O. (1998), An Attempt to Integrate Balanced Profiles and Reflection Seismics: 60th EAGE Conference and Exhibition, Leipzig.
- Leidenfrost, A. and Gajewski, D. (1998), A 3D FD Eikonal Solver for Non-Cubical Grids: 60th EAGE Conference and Exhibition, Leipzig.
- Leidenfrost, A., Gajewski, D. (1998), A 3D FD Eikonal Solver for Non-Cubical Grids: 68th SEG Annual Meeting, New Orleans.
- Tessmer, E. (1998), Seismic Finite-Difference Modeling with Spatially Varying Time Steps: 68th SEG Annual Meeting, New Orleans.
- Zillmer, M., Gajewski, D., Kashtan, B.M. (1998), Reflection Coefficients for Elastic Media with a System of Vertical Fractures: 60th EAGE Conference and Exhibition, Leipzig.
- Zillmer, M., Kashtan, B.M., Gajewski, D. (1998), Quasi-isotropic Approximation and Coupling Ray Theory: 60th EAGE Conference and Exhibition, Leipzig.
- Zillmer, M., Gajewski, D., Kashtan, B.M. (1998), P-wave AVAZ for inclined parallel fractures: 68th SEG Annual Meeting, New Orleans.
1997
- Ettrich, N. and Gajewski, D. (1997), A fast hybrid wavefront construction - FD eikonal solver method: 59th EAGE Conference and Exhibition, Geneva.
- Falk, J., Tessmer, E. (1997), Numerical Studies of Realistic Single Well Monitoring and Walkaway VSP Configurations: 59th EAGE Conference and Exhibition, Geneva.
- Gajewski, D. and Psencik, I. (1997), qP-wave normal moveout in arbitrary weak anisotropic media: 59th EAGE Conference and Exhibition, Geneva.
1996
- Ettrich, N. and Gajewski, D. (1996), Travel time computation in isotropic and weakly anisotropic media by FD--perturbation method: 66th SEG Annual Meeting, Denver.
- Ettrich, N. and Gajewski, D. (1996), A perturbation technique for travel time computation with FD-Eikonal solvers: 58th EAGE Conference and Exhibition, Amsterdam.
- Falk, J., Scheele, M., Tessmer, E., Gajewski, D. (1996), Tube wave propagation in complex viscoelastic borehole environments: A numerical method for case studies: 66th SEG Annual Meeting, Denver.
- Gajewski, D. and Psencik, I. (1996), qP wave phase velocities in weakly anisotropic media - perturbation approach: 66th SEG Annual Meeting, Denver.
- Leidenfrost, A., Ettrich, N. and Gajewski, D. (1996), Comparison of five methods for computing travel times: 58th EAGE Conference and Exhibition, Amsterdam.
1995
- Ettrich, N. and Gajewski, D. (1995), Efficient prestack Kirchhoff migration using wavefront construction: 57th EAGE Conference and Exhibition, Glasgow.
- Falk, J., Tessmer, E., und Gajewski, D. (1995), Tube Wave Modelling by the Finite-Differences Method with Varying Grid Spacing: 57th EAGE Conference and Exhibition, Glasgow.
- Falk, J., Tessmer, E., und Gajewski, D. (1995), Seismic Modelling by the Finite-Differences Method with Locally Varying Time Steps: 57th EAGE Conference and Exhibition, Glasgow.
- Tessmer, E., Kosloff, D. und Tal-Ezer, H. (1995), Depth Migration by Polynomial Expansion: 57th EAGE Conference and Exhibition, Glasgow.