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Artykuły w czasopismach na temat "Inversion full wave"
Luo, Yi, Yue Ma, Yan Wu, Hongwei Liu i Lei Cao. "Full-traveltime inversion". GEOPHYSICS 81, nr 5 (wrzesień 2016): R261—R274. http://dx.doi.org/10.1190/geo2015-0353.1.
Pełny tekst źródłaBrossier, Romain, Stéphane Operto i Jean Virieux. "Seismic imaging of complex onshore structures by 2D elastic frequency-domain full-waveform inversion". GEOPHYSICS 74, nr 6 (listopad 2009): WCC105—WCC118. http://dx.doi.org/10.1190/1.3215771.
Pełny tekst źródłaZhang, Chao, Ting Lei i Yi Wang. "Two-Dimensional Full-Waveform Joint Inversion of Surface Waves Using Phases and Z/H Ratios". Applied Sciences 11, nr 15 (22.07.2021): 6712. http://dx.doi.org/10.3390/app11156712.
Pełny tekst źródłaYilmaz, Öz, Kai Gao, Milos Delic, Jianghai Xia, Lianjie Huang, Hossein Jodeiri i Andre Pugin. "A reality check on full-wave inversion applied to land seismic data for near-surface modeling". Leading Edge 41, nr 1 (styczeń 2022): 40–46. http://dx.doi.org/10.1190/tle41010040.1.
Pełny tekst źródłaTran, Khiem T., Michael McVay, Michael Faraone i David Horhota. "Sinkhole detection using 2D full seismic waveform tomography". GEOPHYSICS 78, nr 5 (1.09.2013): R175—R183. http://dx.doi.org/10.1190/geo2013-0063.1.
Pełny tekst źródłaBarnes, Christophe, i Marwan Charara. "The domain of applicability of acoustic full-waveform inversion for marine seismic data". GEOPHYSICS 74, nr 6 (listopad 2009): WCC91—WCC103. http://dx.doi.org/10.1190/1.3250269.
Pełny tekst źródłaBiondi, Biondo, i Ali Almomin. "Simultaneous inversion of full data bandwidth by tomographic full-waveform inversion". GEOPHYSICS 79, nr 3 (1.05.2014): WA129—WA140. http://dx.doi.org/10.1190/geo2013-0340.1.
Pełny tekst źródłada Silva, Nuno V., Gang Yao i Michael Warner. "Semiglobal viscoacoustic full-waveform inversion". GEOPHYSICS 84, nr 2 (1.03.2019): R271—R293. http://dx.doi.org/10.1190/geo2017-0773.1.
Pełny tekst źródłaLuo, Y., i G. T. Schuster. "Wave‐equation traveltime inversion". GEOPHYSICS 56, nr 5 (maj 1991): 645–53. http://dx.doi.org/10.1190/1.1443081.
Pełny tekst źródłaDettmer, Jan, Stan E. Dosso i Charles W. Holland. "Full wave-field reflection coefficient inversion". Journal of the Acoustical Society of America 122, nr 6 (grudzień 2007): 3327–37. http://dx.doi.org/10.1121/1.2793609.
Pełny tekst źródłaRozprawy doktorskie na temat "Inversion full wave"
Safani, Jamhir. "Surface wave dispersion modelling by full-wavefield reflectivity and inversion for shallow subsurface imaging". 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136173.
Pełny tekst źródłaMacedo, Daniel Leal 1975. "Scattering-based decomposition of sensitivity kernels of acoustic full waveform inversion = Decomposição baseada em teoria de espalhamento dos núcleos de sensibilidade da inversão de onda completa acústica". [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265785.
Pełny tekst źródłaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, Instituto de Geociências
Made available in DSpace on 2018-08-26T05:18:51Z (GMT). No. of bitstreams: 1 Macedo_DanielLeal_D.pdf: 16481305 bytes, checksum: 3d47b0427882ec03cc38bd035feee293 (MD5) Previous issue date: 2014
Resumo: A inversão de onda completa (FWI, do inglês ''full waveform inversion'') nãolinear baseada em gradientes (métodos de descida) é, a princípio, capaz de levar em conta todos os aspectos da propagação de onda contida nos dados síismicos. Porém, FWI baseada em gradientes é limitada pela sua bem conhecida sensibilidade no que diz respeito à escolha do modelo inicial. Com o intuito de melhor entender algumas questões relacionadas à convergência do modelo na FWI, nós estudamos uma decomposição baseada na teoria de espalhamento que permite dividir os núcleos de sensibilidade dos campos de onda acústica em função dos parâmetros do modelo em duas partes: uma relativa ao componente de fundo, outra relativa à componente singular do modelo. Estimativas para a perturbação de fundo, bem como para a perturbação da parte singular do modelo obtidas com os adjuntos destes subnúcleos são componentes da estimativa obtida com o adjunto do núcleo total de sensibilidade. Os experimentos numéricos suportam a tese de que a decomposiçao em subnúcleos permite que se retroprojete somente os resíduos do campo de onda espalhado de modo a obter estimativas razoáveis da perturbação de fundo do modelo. Em um experimento com geometria de aquisição restrita (dados de reflexão com afastamento curto), os subnúcleos baseados em espalhamento múltiplo se aproveitam da autoiluminacão do meio devido às ondas multiplamente espalhadas. A autoiluminação fornece estimativas melhores com conteúdo espectral mais rico nas baixas frequências
Abstract: While in principle nonlinear gradient-based full-waveform inversion (FWI) is capable of handling all aspects of wave propagation contained in the data, including full nonlinearity, in practice, it is limited due to its notorious sensitivity to the choice of the starting model. To help addressing model-convergence issues in FWI, we study a decomposition based on the scattering theory that allows to break the acoustic-wavefield sensitivity kernels with respect to model parameters into background and singular parts. The estimates for both background perturbation and/or singular-part perturbation obtained with the subkernels' adjoints are components of the estimate obtained with the total kernel's adjoint. Our numerical experiments shows the feasibility of our main claim: the decomposition into subkernels allows to backproject the scattered-wavefield residuals only so as to obtain reasonable background-model perturbation estimates. In an experiment with restricted acquisition geometry (reflection data, narrow offset), the multiple-scattering subkernels take advantage of medium self-illumination provided by the scattered wavefields. This self-illumination provides better estimates, with longer wavelengh content
Doutorado
Reservatórios e Gestão
Doutor em Ciências e Engenharia de Petróleo
Freudenreich, Yann Pierre. "P- and S-wave velocity estimation from full wavefield inversion of wide-aperture seismic data". Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620695.
Pełny tekst źródłaWatson, Francis Maurice. "Better imaging for landmine detection : an exploration of 3D full-wave inversion for ground-penetrating radar". Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/better-imaging-for-landmine-detection-an-exploration-of-3d-fullwave-inversion-for-groundpenetrating-radar(720bab5f-03a7-4531-9a56-7121609b3ef0).html.
Pełny tekst źródłaLi, Ruiping. "Inversion for the Elastic Parameters of Layered Transversely Isotropic Media". Curtin University of Technology, Department of Exploration Geophysics, 2002. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=12924.
Pełny tekst źródłaSoftware was developed to recover the apparent elastic parameters for the layered media above this receiver depth using the transmission velocity field as input. Based on a two-layered model, another method was developed to recover the interval elastic parameters for an individual layer of interest, using the signals recorded by receivers on the upper and lower surfaces of this layer. The recovered elastic parameters may be considerably different from the real values if a transversely isotropic medium with a tilted symmetry axis (TTI) is treated as a transversely isotropic medium with a vertical symmetry axis (VTI). A large angle of tilt of the symmetry axis significantly influences the recorded velocity field through the medium. An inversion program was written to recover the value of the tilt angle of a TTI medium, and the elastic parameters of the medium. Programs were also developed to combine information from P, SV, and SH-waves in an inversion procedure. This capability in inversion programs enables us to use the additional information provided by a multi-component VSP survey to obtain accurate estimates of the elastic parameters of geological formations. Software testing and development was carried out on numerically generated input data. Up to 10 milliseconds of random noise in travel time was added to the input to confirm the stability of the inversion software. Further testing was carried out on physical model data where the parameters of the model were known from direct measurements. Finally the inversion software was applied to actual field data and found to give plausible results.
In software testing in the physical modelling laboratory, other practical problems were encountered. System errors caused by the disproportionately large size of the transducers used affected the accuracy of the inversion results obtained. Transducer performance was studied, and it was found that reducing the size of transducers or making offset corrections would decrease the errors caused by the disproportionately large transducer dimensions. In using the elastic parameters recovered, it was found that the elastic parameter δ significantly influences the seismic records from a horizontal reflector. The normal moveout velocity was found to show variations from the zero-offset normal moveout velocity depending on the value and sign of elastic parameter δ. New approximate expressions for anisotropic normal moveout, phase and ray velocity functions at short offsets were developed. The value of anisotropic parameter δ was found to be the major factor controlling these relations. If the recovered parameter δ has a large negative value, analytical and numerical studies demonstrated that the new expression for moveout velocity developed herein should be used instead of Thomsen's normal moveout equation.
Khazraj, Kaoutar. "Paramétrisation hybride champ/objet et inversion full-wave hybride de données sismiques de puits dans un contexte subsalt". Electronic Thesis or Diss., CY Cergy Paris Université, 2024. http://www.theses.fr/2024CYUN1267.
Pełny tekst źródłaSeismic imaging techniques play a crucial role in the exploration and understanding of subsurface structures. In the field of petroleum exploration, subsalt zones present a challenge for conventional imaging techniques and full-wave inversion (FWI). The application of FWI to seismic well data is expected to overcome these challenges. The primary goal is to characterize hydrocarbon reservoirs that may be located beneath and alongside salt bodies. However, the context of well seismic imaging, combined with the challenges of imaging beneath and around salt bodies, requires the introduction of strong constraints into the geophysical inverse problem due to its underdetermined nature.This thesis presents a three-step approach to tackle these challenges. Firstly, it suggests incorporating extit{a priori} geological information into the inversion process by defining geological objects bounded by discontinuities. Secondly, it aims to formalize and compute the gradient with respect to the geometric parameters that define these discontinuities. Thirdly, it proposes the implementation of a hybrid full-wave inversion algorithm that combines field and object-based approaches. This hybrid FWI utilizes both the gradient of physical fields and the gradient relative to geometric parameters.The thesis content is divided into four distinct chapters. The first chapter introduces the fundamental concepts used in the hybrid FWI algorithm. It highlights the approach based on a dual representation of interfaces (explicit/implicit) using deformable unstructured meshes for the explicit discretization of discontinuities and the level-set method for the implicit representation of the geological objects in the inverse problem. Chapter 2 describes the development steps of a software platform for the numerical implementation of these approaches and the execution of hybrid FWI tests. This software platform includes a wave propagation modeling code based on the spectral elements method and an inversion code based on the gradient computation using the Green's function method, with a probabilistic approach to the inverse problem. The third chapter outlines the various stages of the geometric FWI algorithm and its application to well seismic data to estimate the position of salt/sediment interfaces in 2D environments. Finally, the fourth chapter presents the hybrid inversion algorithm and its implementation with well seismic data to estimate the velocities of compression and shear waves, as well as the position of salt body boundaries in 2D environments. The results of the presented numerical tests are promising, validating our hybrid inversion approach
GALUZZI, BRUNO GIOVANNI. "MODELLING AND OPTIMIZATION TECHNIQUES FOR ACOUSTIC FULL WAVEFORM INVERSION IN SEISMIC EXPLORATION". Doctoral thesis, Università degli Studi di Milano, 2018. http://hdl.handle.net/2434/545844.
Pełny tekst źródłaSule, Suki Dauda. "An evaluation of the performance of multi-static handheld ground penetrating radar using full wave inversion for landmine detection". Thesis, University of Hull, 2018. http://hydra.hull.ac.uk/resources/hull:16567.
Pełny tekst źródłaNoersomadi. "Characteristics of tropical tropopause and stratospheric gravity waves analyzed using high resolution temperature profiles from GNSS radio occultation". Kyoto University, 2019. http://hdl.handle.net/2433/242617.
Pełny tekst źródłaFaucher, Florian. "Contributions à l'imagerie sismique par inversion des formes d’onde pour les équations d'onde harmoniques : Estimation de stabilité, analyse de convergence, expériences numériques avec algorithmes d'optimisation à grande échelle". Thesis, Pau, 2017. http://www.theses.fr/2017PAUU3024/document.
Pełny tekst źródłaIn this project, we investigate the recovery of subsurface Earth parameters. Weconsider the seismic imaging as a large scale iterative minimization problem, anddeploy the Full Waveform Inversion (FWI) method, for which several aspects mustbe treated. The reconstruction is based on the wave equations because thecharacteristics of the measurements indicate the nature of the medium in whichthe waves propagate. First, the natural heterogeneity and anisotropy of the Earthrequire numerical methods that are adapted and efficient to solve the wavepropagation problem. In this study, we have decided to work with the harmonicformulation, i.e., in the frequency domain. Therefore, we detail the mathematicalequations involved and the numerical discretization used to solve the waveequations in large scale situations.The inverse problem is then established in order to frame the seismic imaging. Itis a nonlinear and ill-posed inverse problem by nature, due to the limitedavailable data, and the complexity of the subsurface characterization. However,we obtain a conditional Lipschitz-type stability in the case of piecewise constantmodel representation. We derive the lower and upper bound for the underlyingstability constant, which allows us to quantify the stability with frequency andscale. It is of great use for the underlying optimization algorithm involved to solvethe seismic problem. We review the foundations of iterative optimizationtechniques and provide the different methods that we have used in this project.The Newton method, due to the numerical cost of inverting the Hessian, may notalways be accessible. We propose some comparisons to identify the benefits ofusing the Hessian, in order to study what would be an appropriate procedureregarding the accuracy and time. We study the convergence of the iterativeminimization method, depending on different aspects such as the geometry ofthe subsurface, the frequency, and the parametrization. In particular, we quantifythe frequency progression, from the point of view of optimization, by showinghow the size of the basin of attraction evolves with frequency. Following the convergence and stability analysis of the problem, the iterativeminimization algorithm is conducted via a multi-level scheme where frequencyand scale progress simultaneously. We perform a collection of experiments,including acoustic and elastic media, in two and three dimensions. Theperspectives of attenuation and anisotropic reconstructions are also introduced.Finally, we study the case of Cauchy data, motivated by the dual sensors devicesthat are developed in the geophysical industry. We derive a novel cost function,which arises from the stability analysis of the problem. It allows elegantperspectives where no prior information on the acquisition set is required
Książki na temat "Inversion full wave"
service), SpringerLink (Online, red. Full Seismic Waveform Modelling and Inversion. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.
Znajdź pełny tekst źródłaSingh, Satish Chandra. Wave propogation in anisotropic media and full waveform inversion. 1987.
Znajdź pełny tekst źródłaFichtner, Andreas. Full Seismic Waveform Modelling and Inversion. Springer, 2013.
Znajdź pełny tekst źródłaFichtner, Andreas. Full Seismic Waveform Modelling and Inversion. Springer, 2011.
Znajdź pełny tekst źródłaChen, Po, i En-Jui Lee. Full-3D Seismic Waveform Inversion: Theory, Software and Practice. Springer, 2015.
Znajdź pełny tekst źródłaChen, Po, i En-Jui Lee. Full-3D Seismic Waveform Inversion: Theory, Software and Practice. Springer International Publishing AG, 2016.
Znajdź pełny tekst źródłaChen, Po, i En-Jui Lee. Full-3D Seismic Waveform Inversion: Theory, Software and Practice. Springer London, Limited, 2015.
Znajdź pełny tekst źródłaCzęści książek na temat "Inversion full wave"
Chen, Po, i En-Jui Lee. "Anelastic Wave Propagation (AWP)". W Full-3D Seismic Waveform Inversion, 15–90. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16604-9_2.
Pełny tekst źródłaAli, Hassan B., i Michael K. Broadhead. "Shear Wave Properties From Inversion of Scholte Wave Data". W Full Field Inversion Methods in Ocean and Seismo-Acoustics, 371–76. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8476-0_60.
Pełny tekst źródłaBibee, L. Dale, i Leroy M. Dorman. "Full Waveform Inversion of Seismic Interface Wave Data". W Full Field Inversion Methods in Ocean and Seismo-Acoustics, 377–82. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8476-0_61.
Pełny tekst źródłaWiskin, James. "Full Wave Inversion and Inverse Scattering in Ultrasound Tomography/Volography". W Advances in Experimental Medicine and Biology, 201–37. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21987-0_10.
Pełny tekst źródłaBadiey, M. "Influences of Sediment Variability on Broadband Acoustic Wave Propagation in Shallow Water". W Full Field Inversion Methods in Ocean and Seismo-Acoustics, 365–70. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8476-0_59.
Pełny tekst źródłaAthanassoulis, G., J. Papadakis, E. Skarsoulis i M. Taroudakis. "A Comparative Study of Two Wave-Theoretic Inversion Schemes in Ocean Acoustic Tomography". W Full Field Inversion Methods in Ocean and Seismo-Acoustics, 127–32. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8476-0_21.
Pełny tekst źródłaFishman, L., i M. D. Collins. "Direct Wave Propagation in the Frequency Domain via the Dirichlet-to-Neumann Operator Symbol". W Full Field Inversion Methods in Ocean and Seismo-Acoustics, 27–32. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8476-0_5.
Pełny tekst źródłaLindwall, Dennis A., Mrinal K. Sen i Joseph F. Gettrust. "Detection of High Shear Wave Velocities in Marine Sediment by Inversion with Simulated Annealing". W Full Field Inversion Methods in Ocean and Seismo-Acoustics, 383–88. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8476-0_62.
Pełny tekst źródłaFang, Yong, Long-mei Li, Shuang-fen Cao, Xue Li, Fan Huang, Qi Wang, Xiao-guang Liu, Jia-ding Pei i Yong-jie Liao. "Application and Discussion of Diving-Wave Land Full-Waveform Inversion in Complex Mountainous Areas of Western China". W Springer Series in Geomechanics and Geoengineering, 572–84. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0483-5_56.
Pełny tekst źródłaTran, Anh Phuong, i Sébastien Lambot. "Development of Intrinsic Models for Describing Near-Field Antenna Effects, Including Antenna-Medium Coupling, for Improved Radar Data Processing Using Full-Wave Inversion". W Civil Engineering Applications of Ground Penetrating Radar, 219–38. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-04813-0_9.
Pełny tekst źródłaStreszczenia konferencji na temat "Inversion full wave"
Hu, Y., L. Han, P. Zhang i Y. Yin. "Full Wave Traveltime Inversion". W 81st EAGE Conference and Exhibition 2019. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201900875.
Pełny tekst źródłaLiu, Zhaolun, Jing Li i Gerard Schuster. "3D wave-equation dispersion inversion of surface waves". W SEG 2017 Workshop: Full-waveform Inversion and Beyond, Beijing, China, 20-22 November 2017. Society of Exploration Geophysicists, 2017. http://dx.doi.org/10.1190/fwi2017-007.
Pełny tekst źródłaJurado, F., V. Richard i M. Cuer. "Layer-based oriented full wave inversion". W 54th EAEG Meeting. European Association of Geoscientists & Engineers, 1992. http://dx.doi.org/10.3997/2214-4609.201410409.
Pełny tekst źródłaBorisov, Dmitry, Fuchun Gao, Paul Williamson, Frederik J. Simons i Jeroen Tromp. "Robust surface-wave full-waveform inversion". W SEG Technical Program Expanded Abstracts 2019. Society of Exploration Geophysicists, 2019. http://dx.doi.org/10.1190/segam2019-3215047.1.
Pełny tekst źródłaUesaka, I. "Full-wave Inversion in Frequency-domain". W The 4th International Symposium on Recent Advances in Exploration Geophysics (RAEG 1999). European Association of Geoscientists & Engineers, 1999. http://dx.doi.org/10.3997/2352-8265.20140023.
Pełny tekst źródłaWatson, F., i Wrb Lionheart. "SVD analysis of GPR full-wave inversion". W 15th International Conference on Ground-Penetrating Radar (GPR) 2014. IEEE, 2014. http://dx.doi.org/10.1109/icgpr.2014.6970472.
Pełny tekst źródłaHe, C., Y. Chen, H. Fu i G. Yang. "Ensemble Full Wave Inversion with Source Encoding". W 77th EAGE Conference and Exhibition 2015. Netherlands: EAGE Publications BV, 2015. http://dx.doi.org/10.3997/2214-4609.201412764.
Pełny tekst źródłaWatson, F. "Towards 3D full-wave inversion for GPR". W 2016 IEEE Radar Conference (RadarConf16). IEEE, 2016. http://dx.doi.org/10.1109/radar.2016.7485323.
Pełny tekst źródłaM. Song, Z., P. R. Williamson i M. H. Worthington. "2.5D Acoustic full-wave frequency-domain inversion". W 55th EAEG Meeting. European Association of Geoscientists & Engineers, 1993. http://dx.doi.org/10.3997/2214-4609.201411407.
Pełny tekst źródłaVigh, Denes, i E. William Starr. "3D prestack plane‐wave full‐waveform inversion". W SEG Technical Program Expanded Abstracts 2007. Society of Exploration Geophysicists, 2007. http://dx.doi.org/10.1190/1.2792847.
Pełny tekst źródłaRaporty organizacyjne na temat "Inversion full wave"
Pai, D. M. Full-Wave Inversion for Ocean Acoustical Tomography. Fort Belvoir, VA: Defense Technical Information Center, maj 1997. http://dx.doi.org/10.21236/ada325911.
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