SEISMIC WAVEFIELD SIMULATION WITH IRREGULAR SURFACE TOPOGRAPHY AND GRAPHIC PROCESSING UNIT (GPU) IMPLEMENTATION

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	SEISMIC WAVEFIELD SIMULATION WITH IRREGULAR SURFACE TOPOGRAPHY AND GRAPHIC PROCESSING UNIT (GPU) IMPLEMENTATION
	Liu, Xiaobo 1; Chen, Jingyi 1; Lan, Haiqiang 2; Zhao, Zhencong 1
刊名	JOURNAL OF SEISMIC EXPLORATION
	2018-10-01
卷号	27 期号:5 页码:445-472
关键词	wavefield simulation surface topography finite-difference convolutional perfectly matched layer Graphic Processing Unit GPU
ISSN号	0963-0651
英文摘要	Seismic wavefield simulation in the presence of surface topography provides important information for characterizing seismic wave propagation. Based on the boundary-conforming grid method, we first transform both elastic wave equations in second-order formulation and free surface boundary condition in first order system from Cartesian coordinates to curvilinear coordinates. Then, the convolutional perfectly matched layer (CPML) boundary condition is applied to absorb the outgoing seismic waves at the edges of the truncated model. The test results (e.g., wavefield snapshots and seismograms) show that our numerical algorithms can effectively simulate seismic wave propagation in a model with rough topography, and CPML is more efficient than perfectly matched layer (PML) boundary condition in suppressing artificial reflections. In addition, the finite-difference algorithms on a single Graphic Processing Unit (GPU) are used to accelerate seismic numerical modeling in both elastic isotropic and anisotropic media. Compared with the conventional CPU version, the GPU implementation greatly reduces the computational cost.
WOS关键词	PERFECTLY MATCHED LAYER ; FINITE-DIFFERENCE SCHEMES ; BOUNDARY-CONDITION ; GRAZING-INCIDENCE ; CONVOLUTION PML ; PROPAGATION ; STABILITY ; MIGRATION ; MEDIA ; EQUATION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	GEOPHYSICAL PRESS
WOS记录号	WOS:000454943100003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90251]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Chen, Jingyi
作者单位	1.Univ Tulsa, Dept Geosci, Seism Anisotropy Grp, Tulsa, OK 74104 USA 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiaobo,Chen, Jingyi,Lan, Haiqiang,et al. SEISMIC WAVEFIELD SIMULATION WITH IRREGULAR SURFACE TOPOGRAPHY AND GRAPHIC PROCESSING UNIT (GPU) IMPLEMENTATION[J]. JOURNAL OF SEISMIC EXPLORATION,2018,27(5):445-472.
APA	Liu, Xiaobo,Chen, Jingyi,Lan, Haiqiang,&Zhao, Zhencong.(2018).SEISMIC WAVEFIELD SIMULATION WITH IRREGULAR SURFACE TOPOGRAPHY AND GRAPHIC PROCESSING UNIT (GPU) IMPLEMENTATION.JOURNAL OF SEISMIC EXPLORATION,27(5),445-472.
MLA	Liu, Xiaobo,et al."SEISMIC WAVEFIELD SIMULATION WITH IRREGULAR SURFACE TOPOGRAPHY AND GRAPHIC PROCESSING UNIT (GPU) IMPLEMENTATION".JOURNAL OF SEISMIC EXPLORATION 27.5(2018):445-472.