Joint migration inversion for laterally varying media

H. I. Hammad; D. J. Verschuur

doi:10.3997/2214-4609.201600837

Joint migration inversion for laterally varying media

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

5 Citations (Scopus)

Abstract

Joint migration inversion (JMI) has been implemented with the assumption that the medium parameters are only locally laterally varying. We extend JMI such that its modeling algorithm is able to handle arbitrary lateral medium variations. We show numerically that the the propagation operator, which is computed by modal expansion, is not limited by propagation angle. A perfectly matched layer (PML) is implemented to simulate wave propagation in unbounded media. The modeling algorithm is then used for Full Wavefield Migration (FWM) and JMI. We also implement JMI with a preconditioned conjugate gradient scheme. A numerical example shows that starting from a homogeneous model, the modified JMI algorithm is able to recover a velocity anomaly embedded into the model, with high resolution, along with the accompanying image.

Original language	English
Title of host publication	78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential
Editors	Gary Ingram
Publisher	EAGE
Number of pages	5
ISBN (Electronic)	978-946282185-9
DOIs	https://doi.org/10.3997/2214-4609.201600837
Publication status	Published - 2016
Event	78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential - Vienna, Austria Duration: 30 May 2016 → 2 Jun 2016

Conference

Conference	78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential
Country/Territory	Austria
City	Vienna
Period	30/05/16 → 2/06/16

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title = "Joint migration inversion for laterally varying media",

abstract = "Joint migration inversion (JMI) has been implemented with the assumption that the medium parameters are only locally laterally varying. We extend JMI such that its modeling algorithm is able to handle arbitrary lateral medium variations. We show numerically that the the propagation operator, which is computed by modal expansion, is not limited by propagation angle. A perfectly matched layer (PML) is implemented to simulate wave propagation in unbounded media. The modeling algorithm is then used for Full Wavefield Migration (FWM) and JMI. We also implement JMI with a preconditioned conjugate gradient scheme. A numerical example shows that starting from a homogeneous model, the modified JMI algorithm is able to recover a velocity anomaly embedded into the model, with high resolution, along with the accompanying image.",

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T1 - Joint migration inversion for laterally varying media

AU - Hammad, H. I.

AU - Verschuur, D. J.

PY - 2016

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N2 - Joint migration inversion (JMI) has been implemented with the assumption that the medium parameters are only locally laterally varying. We extend JMI such that its modeling algorithm is able to handle arbitrary lateral medium variations. We show numerically that the the propagation operator, which is computed by modal expansion, is not limited by propagation angle. A perfectly matched layer (PML) is implemented to simulate wave propagation in unbounded media. The modeling algorithm is then used for Full Wavefield Migration (FWM) and JMI. We also implement JMI with a preconditioned conjugate gradient scheme. A numerical example shows that starting from a homogeneous model, the modified JMI algorithm is able to recover a velocity anomaly embedded into the model, with high resolution, along with the accompanying image.

AB - Joint migration inversion (JMI) has been implemented with the assumption that the medium parameters are only locally laterally varying. We extend JMI such that its modeling algorithm is able to handle arbitrary lateral medium variations. We show numerically that the the propagation operator, which is computed by modal expansion, is not limited by propagation angle. A perfectly matched layer (PML) is implemented to simulate wave propagation in unbounded media. The modeling algorithm is then used for Full Wavefield Migration (FWM) and JMI. We also implement JMI with a preconditioned conjugate gradient scheme. A numerical example shows that starting from a homogeneous model, the modified JMI algorithm is able to recover a velocity anomaly embedded into the model, with high resolution, along with the accompanying image.

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U2 - 10.3997/2214-4609.201600837

DO - 10.3997/2214-4609.201600837

M3 - Conference contribution

BT - 78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential

A2 - Ingram, Gary

PB - EAGE

T2 - 78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential

Y2 - 30 May 2016 through 2 June 2016

ER -

Joint migration inversion for laterally varying media

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