A parallel 3-D staggered grid pseudospectral time domain method for   ground-penetrating radar wave simulation

doi:10.1029/2010JB007711

CORC > 北京大学 > 地球与空间科学学院

	A parallel 3-D staggered grid pseudospectral time domain method for ground-penetrating radar wave simulation
	Huang, Qinghua ; Li, Zhanhui ; Wang, Yanbin
刊名	journal of geophysical research solid earth
	2010
关键词	SAN-ANDREAS FAULT MAXWELLS EQUATIONS DISPERSIVE MEDIA PSTD ALGORITHM PROPAGATION GPR GEOMETRY SHALLOW SYSTEM
DOI	10.1029/2010JB007711
英文摘要	We presented a parallel 3-D staggered grid pseudospectral time domain (PSTD) method for simulating ground-penetrating radar (GPR) wave propagation. We took the staggered grid method to weaken the global effect in PSTD and developed a modified fast Fourier transform (FFT) spatial derivative operator to eliminate the wraparound effect due to the implicit periodical boundary condition in FFT operator. After the above improvements, we achieved the parallel PSTD computation based on an overlap domain decomposition method without any absorbing condition for each subdomain, which can significantly reduce the required grids in each overlap subdomain comparing with other proposed algorithms. We test our parallel technique for some numerical models and obtained consistent results with the analytical ones and/or those of the nonparallel PSTD method. The above numerical tests showed that our parallel PSTD algorithm is effective in simulating 3-D GPR wave propagation, with merits of saving computation time, as well as more flexibility in dealing with complicated models without losing the accuracy. The application of our parallel PSTD method in applied geophysics and paleoseismology based on GPR data confirmed the efficiency of our algorithm and its potential applications in various subdisciplines of solid earth geophysics. This study would also provide a useful parallel PSTD approach to the simulation of other geophysical problems on distributed memory PC cluster.; Geochemistry & Geophysics; SCI(E); 2; ARTICLE; 115
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155825]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Huang, Qinghua,Li, Zhanhui,Wang, Yanbin. A parallel 3-D staggered grid pseudospectral time domain method for ground-penetrating radar wave simulation[J]. journal of geophysical research solid earth,2010.
APA	Huang, Qinghua,Li, Zhanhui,&Wang, Yanbin.(2010).A parallel 3-D staggered grid pseudospectral time domain method for ground-penetrating radar wave simulation.journal of geophysical research solid earth.
MLA	Huang, Qinghua,et al."A parallel 3-D staggered grid pseudospectral time domain method for ground-penetrating radar wave simulation".journal of geophysical research solid earth (2010).