Wavefield extrapolation in pseudodepth domain

Xuxin Ma; Tariq Ali Alkhalifah

doi:10.1190/GEO2012-0237.1

Wavefield extrapolation in pseudodepth domain

Xuxin Ma, Tariq Ali Alkhalifah

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Wavefields are commonly computed in the Cartesian coordinate frame. Its efficiency is inherently limited due to spatial oversampling in deep layers, where the velocity is high and wavelengths are long. To alleviate this computational waste due to uneven wavelength sampling, we convert the vertical axis of the conventional domain from depth to vertical time or pseudodepth. This creates a nonorthognal Riemannian coordinate system. Isotropic and anisotropic wavefields can be extrapolated in the new coordinate frame with improved efficiency and good consistency with Cartesian domain extrapolation results. Prestack depth migrations are also evaluated based on the wavefield extrapolation in the pseudodepth domain.© 2013 Society of Exploration Geophysicists. All rights reserved.

Original language	English (US)
Pages (from-to)	S81-S91
Number of pages	1
Journal	Geophysics
Volume	78
Issue number	2
DOIs	https://doi.org/10.1190/GEO2012-0237.1
State	Published - Feb 1 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank KAUST for supporting this work. We are grateful to Mohammad Zuberi and Yunseok Choi for many helpful discussions. The outsanding reviews by Alexey Stovas, Yu Zhang, and an anonymous reviewer have greatly improved this manuscript. We acknowledge Hess Corporation and SMAART consortium for releasing their synthetic salt data sets.

ASJC Scopus subject areas

Geochemistry and Petrology
Geophysics

Access to Document

10.1190/GEO2012-0237.1

Cite this

@article{868d1afa0ca24cae81639b24271cfe7e,

title = "Wavefield extrapolation in pseudodepth domain",

abstract = "Wavefields are commonly computed in the Cartesian coordinate frame. Its efficiency is inherently limited due to spatial oversampling in deep layers, where the velocity is high and wavelengths are long. To alleviate this computational waste due to uneven wavelength sampling, we convert the vertical axis of the conventional domain from depth to vertical time or pseudodepth. This creates a nonorthognal Riemannian coordinate system. Isotropic and anisotropic wavefields can be extrapolated in the new coordinate frame with improved efficiency and good consistency with Cartesian domain extrapolation results. Prestack depth migrations are also evaluated based on the wavefield extrapolation in the pseudodepth domain.{\textcopyright} 2013 Society of Exploration Geophysicists. All rights reserved.",

author = "Xuxin Ma and Alkhalifah, {Tariq Ali}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We thank KAUST for supporting this work. We are grateful to Mohammad Zuberi and Yunseok Choi for many helpful discussions. The outsanding reviews by Alexey Stovas, Yu Zhang, and an anonymous reviewer have greatly improved this manuscript. We acknowledge Hess Corporation and SMAART consortium for releasing their synthetic salt data sets.",

year = "2013",

month = feb,

day = "1",

doi = "10.1190/GEO2012-0237.1",

language = "English (US)",

volume = "78",

pages = "S81--S91",

journal = "Geophysics",

issn = "0016-8033",

publisher = "Society of Exploration Geophysicists",

number = "2",

}

TY - JOUR

T1 - Wavefield extrapolation in pseudodepth domain

AU - Ma, Xuxin

AU - Alkhalifah, Tariq Ali

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We thank KAUST for supporting this work. We are grateful to Mohammad Zuberi and Yunseok Choi for many helpful discussions. The outsanding reviews by Alexey Stovas, Yu Zhang, and an anonymous reviewer have greatly improved this manuscript. We acknowledge Hess Corporation and SMAART consortium for releasing their synthetic salt data sets.

PY - 2013/2/1

Y1 - 2013/2/1

N2 - Wavefields are commonly computed in the Cartesian coordinate frame. Its efficiency is inherently limited due to spatial oversampling in deep layers, where the velocity is high and wavelengths are long. To alleviate this computational waste due to uneven wavelength sampling, we convert the vertical axis of the conventional domain from depth to vertical time or pseudodepth. This creates a nonorthognal Riemannian coordinate system. Isotropic and anisotropic wavefields can be extrapolated in the new coordinate frame with improved efficiency and good consistency with Cartesian domain extrapolation results. Prestack depth migrations are also evaluated based on the wavefield extrapolation in the pseudodepth domain.© 2013 Society of Exploration Geophysicists. All rights reserved.

AB - Wavefields are commonly computed in the Cartesian coordinate frame. Its efficiency is inherently limited due to spatial oversampling in deep layers, where the velocity is high and wavelengths are long. To alleviate this computational waste due to uneven wavelength sampling, we convert the vertical axis of the conventional domain from depth to vertical time or pseudodepth. This creates a nonorthognal Riemannian coordinate system. Isotropic and anisotropic wavefields can be extrapolated in the new coordinate frame with improved efficiency and good consistency with Cartesian domain extrapolation results. Prestack depth migrations are also evaluated based on the wavefield extrapolation in the pseudodepth domain.© 2013 Society of Exploration Geophysicists. All rights reserved.

UR - http://hdl.handle.net/10754/562646

UR - http://mr.crossref.org/iPage?doi=10.1190%2Fgeo2012-0237.1

UR - http://www.scopus.com/inward/record.url?scp=84878692896&partnerID=8YFLogxK

U2 - 10.1190/GEO2012-0237.1

DO - 10.1190/GEO2012-0237.1

M3 - Article

SN - 0016-8033

VL - 78

SP - S81-S91

JO - Geophysics

JF - Geophysics

IS - 2

ER -

Wavefield extrapolation in pseudodepth domain

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this