Seismic anisotropy investigations in the USSR
نویسندگان
چکیده
منابع مشابه
Practical applications of seismic anisotropy
s, 1139–1142. Grechka, V., Mateeva, A., Gentry, C., Jorgensen, P, Lopez, P. and Franco, G. [2007] Estimation of seismic anisotropy from P-wave VSP data. The Leading Edge, 26(6), 756–759. Hudson, J.A. [1981] Wave speeds and attenuation of seismic waves in materialc containing cracks. Geophysical Journal of the Royal Astronomical Society, 64, 133–150. CC02339-MA009 Seabird Exploration.indd 10...
متن کاملMantle dynamics and seismic anisotropy
a r t i c l e i n f o Keywords: seismic anisotropy mantle flow geodynamic modeling shear wave splitting surface wave analysis mantle convection Observations of seismic anisotropy yield some of the most direct constraints available on both past and present-day deformation in the Earth's mantle. Insight into the character of mantle flow can also be gained from the geodynamical modeling of mantle ...
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The lower mantle is dominated by two large structures with anomalously low shear wave velocities, known as Large Low-Shear Velocity Provinces (LLSVPs). Several studies have documented evidence for strong seismic anisotropy at the base of the mantle near the edges of the African LLSVP. Recent work has identified a smaller structure with similar low-shear wave velocities beneath Eurasia, dubbed t...
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Elastic anisotropy is present where the speed of a seismic wave depends on its direction. In Earth's mantle, elastic anisotropy is induced by minerals that are preferentially oriented in a directional flow or deformation. Earthquakes generate two seismic wave types: compressional (P) and shear (S) waves, whose coupling in anisotropic rocks leads to scattering, birefringence, and waves with hybr...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1977
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1977.tb03703.x