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Effects of dipping boundaries and anisotropic media on receiver functions

FANG Li-hua,WU Jian-ping(Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)  
Great progresses have been made in receiver function extracting methods,inversion methods and interface tomography methods since the 1970 s.The receiver function method has been widely used in studying S wave velocity of crust and upper mantle.With the in-depth observation and research,the effects of dipping boundaries and anisotropic media on receiver functions have attracted to geophysicists′ attention.We constructed dipping boundary models and different anisotropic models and examined azimuthal variations of the synthetic radial and transverse receiver functions.For dipping boundaries and anisotropic layers,they can cause obvious energies on transverse component and show periodicity variations as a function of back azimuth.The main differences manifest on periodicities and arrivals.By analyzing the variation characteristics of direct P wave and Ps conversions on radial and transverse components,we can distinguish the effects of dipping boundaries and anisotropic layers on receiver functions.
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