Výsledky vyhledávání - "Eric Verschuur"

Akademický článek

A non-reflecting wave equation through directional wave-field suppression and its finite difference implementation

Autor: Teun Schaeken, Leo Hoogerbrugge, Eric Verschuur

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-8 (2022)

Abstract The acoustic wave equation describes wave propagation directly from basic physical laws, even in heterogeneous acoustic media. When numerically simulating waves with the wave equation, contrasts in the medium parameters automatically generat

Externí odkaz: https://doaj.org/article/725ba2a64f8e43b185f4785e959c686e

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Akademický článek

Virtual acoustics in inhomogeneous media with single-sided access

Autor: Kees Wapenaar, Joeri Brackenhoff, Jan Thorbecke, Joost van der Neut, Evert Slob, Eric Verschuur

Publikováno v: Scientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)

Abstract A virtual acoustic source inside a medium can be created by emitting a time-reversed point-source response from the enclosing boundary into the medium. However, in many practical situations the medium can be accessed from one side only. In t

Externí odkaz: https://doaj.org/article/32060714a7ca4b16a90f9ead52c2cc8b

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Low-rank-based residual statics estimation and correction

Autor: Ali M. Alfaraj, D. J. (Eric) Verschuur, Felix J. Herrmann

Publikováno v: GEOPHYSICS. 88:V215-V231

Surface consistency forms the basis for short-wavelength statics estimation. When raypaths in the near surface diverge from a normal incidence or when the normal moveout (NMO) velocity is inaccurate, surface-consistent methods may fail to estimate ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d51042c1d89d78eafbc14cbbfd4d563
https://doi.org/10.1190/geo2022-0415.1

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Accelerated 2-D Real-Time Refraction-Corrected Transcranial Ultrasound Imaging

Autor: Moein Mozaffarzadeh, Dirk J. Eric Verschuur, Martin D. Verweij, Nico de Jong, Guillaume Renaud

Publikováno v: IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, 69(9), 2599-2610. Institute of Electrical and Electronics Engineers Inc.
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 69(9)

In a recent study, we proposed a technique to correct aberration caused by the skull and reconstruct a transcranial B-mode image with a refraction-corrected synthetic aperture imaging (SAI) scheme. Given a sound speed map, the arrival times were calc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e6d11bda2e8b6a2bdc4b2648203c5f6
http://www.scopus.com/inward/record.url?scp=85134205433&partnerID=8YFLogxK

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Refraction-Corrected Transcranial Ultrasound Imaging through the Human Temporal Window using a Single Probe

Autor: Moein Mozaffarzadeh, Eric Verschuur, Martin D. Verweij, Verya Daeichin, Nico De Jong, Guillaume Renaud

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 69(4)

Transcranial ultrasound imaging (TUI) is a diagnostic modality with numerous applications, but unfortunately, it is hindered by phase aberration caused by the skull. In this article, we propose to reconstruct a transcranial B-mode image with a refrac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ebd12a1e32e7ec4a671091c5a92dba5
https://doi.org/10.1109/TUFFC.2022.3148121

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Enhancing subsalt imaging through advanced identification and suppression of interbed multiples and mode-converted reflections — Gulf of Mexico and Brazil case studies

Autor: Christopher Lee Slind, Gundogan Coskun, Shuqian Dong, Jan Thorbecke, Riaz Alai, Eric Verschuur, Faqi Liu, Bin Wang, Eric Andersen, Cosmin Macesanu

Publikováno v: The Leading Edge. 40:905-913

In our case studies, the success of subsalt exploration and development wells depended heavily on the characterization of highly heterogeneous lacustrine microbial carbonates. Acoustic and elastic inversions have proved to be a good proxy for identif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5bd82c9ccf15d02eb4eb6faa327994c4
https://doi.org/10.1190/tle40120905.1

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Full wavefield least-squares reverse time migration

Autor: Mikhail Davydenko, Eric Verschuur

Publikováno v: GEOPHYSICS. 86:WC67-WC74

Waveform inversion based on least-squares reverse time migration (LSRTM) usually involves Born modeling, which models the primary-only data. As a result, the inversion process handles only primaries and corresponding multiple elimination preprocessin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a571228b4531d83e1e7cd376f0f4541
https://doi.org/10.1190/geo2020-0866.1

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Marchenko multiple elimination and full-wavefield migration in a resonant pinch-out model

Autor: Eric Verschuur, Evert Slob, Lele Zhang

Publikováno v: Geophysics, 86(5)

Marchenko multiple elimination schemes are able to attenuate all internal multiple reflections in acoustic reflection data. These can be implemented with and without compensation for two-way transmission effects in the resulting primary reflection da

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dc32208487fa923e6521e95531e171e
https://doi.org/10.1190/geo2020-0867.1

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