Global SH-wave propagation in a 2D whole Moon model using the parallel hybrid PSM/FDM method

CORC > 北京大学 > 地球与空间科学学院

	Global SH-wave propagation in a 2D whole Moon model using the parallel hybrid PSM/FDM method
	Jiang Xianghua ; Wang Yanbin ; Qin Yanfang ; Takenaka Hiroshi
刊名	Earthquake Science
	2015
关键词	Whole Moon model Seismic wavefield SHwave propagation Hybrid method Parallel computing
英文摘要	We present numerical modeling of SH-wave propagation for the recently proposed whole Moon model and try to improve our understanding of lunar seismic wave propagation. We use a hybrid PSM/FDM method on staggered grids to solve the wave equations and implement the calculation on a parallel PC cluster to improve the computing efficiency. Features of global SH-wave propagation are firstly discussed for a 100-km shallow and 900-km deep moonquakes, respectively. Effects of frequency range and lateral variation of crust thickness are then investigated with various models. Our synthetic waveforms are finally compared with observed Apollo data to show the features of wave propagation that were produced by our model and those not reproduced by our models. Our numerical modeling show that the low-velocity upper crust plays significant role in the development of reverberating wave trains. Increasing frequency enhances the strength and duration of the reverberations. Surface multiples dominate wavefields for shallow event. Core-mantle reflections can be clearly identified for deep event at low frequency. The layered whole Moon model and the low-velocity upper crust produce the reverberating wave trains following each phases consistent with observation. However, more realistic Moon model should be considered in order to explain the strong and slow decay scattering between various phases shown on observation data.; supported by the National Natural Science Foundation of China; 中国科学引文数据库(CSCD); 3; 163-174; 28
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492293]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Jiang Xianghua,Wang Yanbin,Qin Yanfang,et al. Global SH-wave propagation in a 2D whole Moon model using the parallel hybrid PSM/FDM method[J]. Earthquake Science,2015.
APA	Jiang Xianghua,Wang Yanbin,Qin Yanfang,&Takenaka Hiroshi.(2015).Global SH-wave propagation in a 2D whole Moon model using the parallel hybrid PSM/FDM method.Earthquake Science.
MLA	Jiang Xianghua,et al."Global SH-wave propagation in a 2D whole Moon model using the parallel hybrid PSM/FDM method".Earthquake Science (2015).