Travelling-wave Green tensor and near-field Rayleigh-wave sensitivity

doi:10.1093/gji/ggv564

CORC > 北京大学 > 地球与空间科学学院

	Travelling-wave Green tensor and near-field Rayleigh-wave sensitivity
	Liu, Kui ; Zhou, Ying
刊名	GEOPHYSICAL JOURNAL INTERNATIONAL
	2016
关键词	Surface waves and free oscillations Seismic tomography Theoretical seismology Wave scattering and diffraction SOUTHERN CALIFORNIA CRUST UPPER-MANTLE STRUCTURE SEISMIC TOMOGRAPHY SPECTRAL-ELEMENT FREQUENCY TOMOGRAPHY FRECHET KERNELS ADJOINT METHODS NORTH-AMERICA SURFACE-WAVES PHASE DELAYS
DOI	10.1093/gji/ggv564
英文摘要	Travelling-wave Green tensor has been widely used in calculations of synthetic seismograms and finite-frequency sensitivities of surface waves. The classic travelling-wave decomposition is based on a far-field approximation and may not be valid when applied to construct sensitivity kernels in regions close to the receiver. In this paper, we calculate synthetic seismograms and finite-frequency sensitivity kernels of Rayleigh waves based on travelling-wave representation of Green tensor that fully accounts for near-field effects. We show that far-field approximation is adequate for synthetic seismograms when the source-receiver epicentral distance is greater than the dominant wavelength. Errors in Rayleigh-wave sensitivity kernels introduced by far-field approximation are in general negligible for single-station measurements except for in a small region around the station, and the errors are more significant in sensitivity kernels for interstation measurements. In addition, interstation measurements are strongly sensitive to structures outside the region between the two stations, even for two stations along the same great circle path from the seismic source.; US National Science Foundation [EAR-1013617]; National Natural Science Foundation of China [41374047]; College Foundation of Yunnan University [2015CG002]; SCI(E); EI; ARTICLE; yingz@vt.edu; 1; 134-145; 205
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437952]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Liu, Kui,Zhou, Ying. Travelling-wave Green tensor and near-field Rayleigh-wave sensitivity[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2016.
APA	Liu, Kui,&Zhou, Ying.(2016).Travelling-wave Green tensor and near-field Rayleigh-wave sensitivity.GEOPHYSICAL JOURNAL INTERNATIONAL.
MLA	Liu, Kui,et al."Travelling-wave Green tensor and near-field Rayleigh-wave sensitivity".GEOPHYSICAL JOURNAL INTERNATIONAL (2016).