TY - GEN
T1 - Approximating constant-Q seismic propagation in the time domain
AU - Zhu, Tieyuan
AU - Carcione, José M.
AU - Harris, Jerry M.
N1 - Funding Information:
The first author TZ would like to thank Stanford Wave Physics lab for financial support and Xiaobi Xie for discussions of Green's function analytical solutions. JMC thanks the EU-CO2CARE project for partially funding the research.
Publisher Copyright:
© 2012 SEG.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - In this study, we investigate the accuracy of approximating constant-Q by a series of Zener or standard linear solids (SLS) mechanisms. Modeling of approximately constant-Q in a viscoacoustic medium is implemented in time domain using finite-difference (FD) approach. The accuracy of numerical solutions is evaluated by comparison with the analytical solution of the constant-Q model. We found the FD solutions using three SLS (relaxation mechanisms) as well as a single SLS mechanism are quite accurate for weak and strong attenuation. Although the RMS errors of FD simulations using the single relaxation mechanism become larger with increasing offset, especially for strong attenuation (Q=20), the results are still acceptable. The simulated synthetic data of the complex model further illustrate that the single SLS mechanism to model constant-Q is efficient and sufficiently accurate. Moreover, it benefits from less computational costs in time and memory. Therefore, we suggest that the single relaxation is a promising choice to model constant-Q for computational intensive seismic modeling and inversion.
AB - In this study, we investigate the accuracy of approximating constant-Q by a series of Zener or standard linear solids (SLS) mechanisms. Modeling of approximately constant-Q in a viscoacoustic medium is implemented in time domain using finite-difference (FD) approach. The accuracy of numerical solutions is evaluated by comparison with the analytical solution of the constant-Q model. We found the FD solutions using three SLS (relaxation mechanisms) as well as a single SLS mechanism are quite accurate for weak and strong attenuation. Although the RMS errors of FD simulations using the single relaxation mechanism become larger with increasing offset, especially for strong attenuation (Q=20), the results are still acceptable. The simulated synthetic data of the complex model further illustrate that the single SLS mechanism to model constant-Q is efficient and sufficiently accurate. Moreover, it benefits from less computational costs in time and memory. Therefore, we suggest that the single relaxation is a promising choice to model constant-Q for computational intensive seismic modeling and inversion.
UR - http://www.scopus.com/inward/record.url?scp=85059175461&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059175461&partnerID=8YFLogxK
U2 - 10.1190/segam2012-1415.1
DO - 10.1190/segam2012-1415.1
M3 - Conference contribution
AN - SCOPUS:85059175461
SN - 9781622769452
T3 - Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
SP - 3060
EP - 3064
BT - Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
PB - Society of Exploration Geophysicists
T2 - Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
Y2 - 4 November 2012 through 9 November 2012
ER -