TY - JOUR
T1 - A 2.5D generalized first-order wave equation to accommodate various elastic media and different boundary conditions
AU - Yang, Shangbei
AU - Zhou, Bing
AU - Bai, Chaoying
N1 - Funding Information:
This publication is based on the work supported by the Khalifa University of Science and Technology under Award No. CIRA-2018-48.
Publisher Copyright:
© 2019 SEG
PY - 2019/8/10
Y1 - 2019/8/10
N2 - We present a 2.5D generalized first-order time-domain governing equation to model seismic waves propagation in acoustic, elastic isotropic and anisotropic media, as well as at the air-water, air-solid and water-solid interfaces with a single computer program. In order to verify the proposed wave equation, we numerically solve it by a curvilinear finite-difference method, which exactly matches free-surface topography and undulating subsurface interfaces. The comparison between the numerical wave solutions and the theoretical wave-fronts in various media (acoustic, isotropic and anisotropic media) shows good agreements, and the results of seismic wave propagation at different boundaries (air-water, air-solid and undulating water-solid interfaces) demonstrate clear reflection, conversion and transmission waveforms, which confirm the correctness of the proposed wave equation.
AB - We present a 2.5D generalized first-order time-domain governing equation to model seismic waves propagation in acoustic, elastic isotropic and anisotropic media, as well as at the air-water, air-solid and water-solid interfaces with a single computer program. In order to verify the proposed wave equation, we numerically solve it by a curvilinear finite-difference method, which exactly matches free-surface topography and undulating subsurface interfaces. The comparison between the numerical wave solutions and the theoretical wave-fronts in various media (acoustic, isotropic and anisotropic media) shows good agreements, and the results of seismic wave propagation at different boundaries (air-water, air-solid and undulating water-solid interfaces) demonstrate clear reflection, conversion and transmission waveforms, which confirm the correctness of the proposed wave equation.
UR - http://www.scopus.com/inward/record.url?scp=85121846408&partnerID=8YFLogxK
U2 - 10.1190/segam2019-3215323.1
DO - 10.1190/segam2019-3215323.1
M3 - Conference article
AN - SCOPUS:85121846408
SN - 1052-3812
SP - 3775
EP - 3779
JO - SEG Technical Program Expanded Abstracts
JF - SEG Technical Program Expanded Abstracts
T2 - Society of Exploration Geophysicists International Exposition and 89th Annual Meeting, SEG 2019
Y2 - 15 September 2019 through 20 September 2019
ER -