Modeling the Jiyang depression, northern China, using a wave-field extrapolation finite-difference method and waveform inversion

	Modeling the Jiyang depression, northern China, using a wave-field extrapolation finite-difference method and waveform inversion
	Zhao, L; Zheng, TY; Xu, WW
刊名	BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
	2004-06-01
卷号	94 期号:3 页码:988-1001
ISSN号	0037-1106
文献子类	Article
英文摘要	We study the 2D seismic velocity structure of the south edge of the Jiyang depression, in the Bohai Bay Basin, northern China, using recordings from 28 broadband seismic stations and a method combining an shear horizontal (SH) forward synthetic calculation and waveform inversion. The forward synthetic calculations are performed by a finite-difference (FD) method, with its computational domain localized in the basin area and input motions at the base of the model extrapolated from the displacement recorded at a nearby hard-rock station. In waveform inversion, the shapes of the strata are varied to search for a best-fitting model based on the fit of relative timing, amplitude, and phase of the synthetics to the seismic data. Numerical experiments using synthetic data and test models demonstrate the validity, resolution, and sensitivity of our technique. With this technique, we obtain two cross sections of the south edge of the Jiyang depression, the Bohai Bay Basin, northern China. The waveform inversions using the seismic data from four teleseismic events show consistent results for both cross sections. Those inversion results are also in agreement with a geological cross section available in the region. Our models estimate that the south edge of the Jiyang depression is juxtaposed against the Luxi uplift and its structures. Our inversion results also reveal a blind fault in the region and features suggesting major extensions in Paleogene.
WOS关键词	LOS-ANGELES BASIN ; BOUNDARY ; EARTHQUAKE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SEISMOLOGICAL SOC AMER
WOS记录号	WOS:000222417800017
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/79783]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao, L
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhao, L,Zheng, TY,Xu, WW. Modeling the Jiyang depression, northern China, using a wave-field extrapolation finite-difference method and waveform inversion[J]. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,2004,94(3):988-1001.
APA	Zhao, L,Zheng, TY,&Xu, WW.(2004).Modeling the Jiyang depression, northern China, using a wave-field extrapolation finite-difference method and waveform inversion.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,94(3),988-1001.
MLA	Zhao, L,et al."Modeling the Jiyang depression, northern China, using a wave-field extrapolation finite-difference method and waveform inversion".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 94.3(2004):988-1001.