Wavefield features of teleseismic receiver function in laterally inhomogeneous media

In this study we systematically investigate the effects of laterally inhomogeneous crustal structure with planar dipping interfaces on the teleseismic receiver function. For this purpose the synthetic receiver functions in the 3-D laterally inhomogeneous media are computed using the Maslov asymptoti...

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Bibliographic Details
Published in:Acta seismologica sinica 2000-11, Vol.13 (6), p.656-663
Main Authors: Chen, Jiu-hui, Liu, Qi-yuan
Format: Article
Language:eng ; chi
Subjects:
Dipping
Inhomogeneous media
Mathematical analysis
Mathematical models
Receivers
Seismic engineering
Seismic phenomena
Seismology
Stations
Waveform analysis
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Summary:In this study we systematically investigate the effects of laterally inhomogeneous crustal structure with planar dipping interfaces on the teleseismic receiver function. For this purpose the synthetic receiver functions in the 3-D laterally inhomogeneous media are computed using the Maslov asymptotic ray method (CHEN, LIU, 1999). Our results demonstrate that the symmetric and asymmetric variations above the sources azimuths appear on the radial and transverse components of the receiver function, respectively. The dipping direction and dipping angle of the interface beneath the station can be estimated from these features. But, when several different dipping interfaces exist within the crust, only an apparent dipping direction can be inferred from the waveform variations of the receiver function over different azimuths at a single station. By analyzing our observational data is shown that the planar dipping interface is a well first-order approximation for investigating the crustal lateral inhomogeneity, when only data recorded at a single station are used. And our results given in this study are consistent with those given by seismic array study.[PUBLICATION ABSTRACT]
ISSN:1000-9116
1674-4519
1993-1344
1867-8777
DOI:10.1007/s11589-000-0067-y