Crystal anisotropy receiver function
WebMar 27, 2024 · The receiver function (RF) technique is an effective method for studying crustal structure. For a single station, the average 1-D crustal structure is usually derived by stacking the radial RFs from all back-azimuths, whereas structural variations (such as dipping discontinuities or anisotropy) can be constrained through analysis of waveform … WebOct 1, 2024 · It is used to characterize the rheology of major faults and shear zones, which is important for understanding crustal deformation and geodynamic processes beneath …
Crystal anisotropy receiver function
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WebThis study investigates the seismic structure and anisotropy in the crust beneath Madagascar and southeastern Africa, using receiver functions. The understanding of seismic anisotropy is essential for imaging past and present deformation in the lithosphere–asthenosphere system. In the upper mantle, seismic anisotropy mainly … WebMay 1, 2024 · Detection of single layered anisotropy by receiver functions Numerous studies have investigated crustal azimuthal anisotropy utilizing receiver functions …
WebJun 1, 1997 · Receiver functions are derived from teleseismic waves recorded during the 1988 to 1989 PASSCAL Basin and Range passive-source seismic experiment in northwestern Nevada. A velocity model involving both a planar dipping Moho and crustal anisotropy is needed to explain the radial and tangential motions of the observed P S … WebDec 7, 2016 · Crustal anisotropy is crucial to understanding the evolutionary history of Earth's lithosphere. Shear wave splitting of Moho P -to- S converted phases in receiver functions (RFs) have been often used to study crustal anisotropy.
WebIn recent years, P -to- S (or Ps) receiver functions (RFs) have been widely used to resolve complex media, such as dipping interfaces and layered anisotropy. Receiver functions represent P -to- S conversions at seismic discontinuities and can be expressed into a radial and a transverse component (Langston 1977; Vinnik 1977 ). WebNov 8, 2011 · We developed an integrated technique for estimating crustal anisotropy with a horizontal axis using radial (R) and transverse (T) receiver functions. The technique …
WebMay 25, 2024 · We find that S–P receiver functions have the potential to constrain anisotropy at depth via the back-azimuth variation of Sp-phase amplitude on the vertical component. We conclude that practical use of S receiver functions to investigate anisotropy will depend on accurate determination of the initial S-wave polarization.
WebMay 20, 2015 · Analysis of receiver functions for 58 stations in northern Japan Anisotropy is located in both the upper and lower crust Anisotropy displays E-W orientation in the lower crust 1 Introduction Seismic anisotropy is the rock property describing the variation of the speed of seismic waves with the propagation direction at a given point. chlew st mandeWebThe method of studying crustal anisotropy using the azimuthal variations of receiver func- tions can be applied to regions with complex anisotropic feature, from which we can … chlew traductionWebextracted by receiver function analysis, is now widely used in measuring seismic anisotropy in the crust. In general, this con-version wave is registerd as a very weak signal in individual receiver functions. Making robust measurement of crust aniso-tropy with such a weak signal can be extremely difficult and dangerous. chlf12-40WebIn general, to interpret the origin of the anisotropy derived from receiver function analysis, the type of symmetry (fast or slow) has to be estimated in view of geological or … chlew saint mandeWebSep 15, 2014 · The receiver function analysis technique isolates teleseismic mode conversions originating at velocity contrasts beneath a seismic station. We show that dipping isotropic contrasts as well as small (<10%) anisotropy generate first-order (i.e. Moho-sized) arrivals in receiver functions. chlf2-20WebJul 10, 1998 · We examine the effects on receiver functions of transverse anisotropy and of dipping isotropic boundaries. Splitting of the Moho Ps phase predicts the anisotropy from … chlf2-20lswscWebanisotropy, in physics, the quality of exhibiting properties with different values when measured along axes in different directions. Anisotropy is most easily observed in single … chlf2-60lswsc