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Self-consistent models of Earth's mantle and core from long-period seismic and tidal constraints
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Seismic anisotropy — Introduction
GEOPHYSICS, 2017Seismic anisotropy has evolved over the years from an esoteric, largely theoretical field to a key component in building robust subsurface models from seismic data (for a detailed historical overview, see Helbig and Thomsen, 2005). Transversely isotropic media with a vertical (VTI) and tilted (TTI) axis of symmetry have become standard in seismic ...
Grechka, V. +3 more
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Seismic Anisotropy of Fractured Rocks
3rd International Congress of the Brazilian Geophysical Society, 1993A simple method for including the effects of geologically realistic fractures on the seismic propagation through fractured rocks can be obtained by writing the effective compliance tensor of the fractured rock as the sum of the compliance tensor of the unfractured background rock and the compliance tensors for each set of parallel fractures or aligned
Michael Schoenberg, Colin M. Sayers
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Journal of Geophysical Research: Solid Earth, 1995
The seismic properties and preferred clay mineral orientation of a suite of shales are investigated using laboratory velocity measurements as a function of confining pressure, X ray diffraction techniques, and electron microprobe backscatter (BSE) imaging.
Joel E. Johnston, Nikolas I. Christensen
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The seismic properties and preferred clay mineral orientation of a suite of shales are investigated using laboratory velocity measurements as a function of confining pressure, X ray diffraction techniques, and electron microprobe backscatter (BSE) imaging.
Joel E. Johnston, Nikolas I. Christensen
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GEOPHYSICS, 2001
The topic of seismic anisotropy in exploration and exploitation has seen a great deal of progress in the past decade‐and‐a‐half. The principal reason for this is the increased (and increasing) quality of seismic data, of the processing done to it, and of the interpretation expected from it. No longer an academic subject of little practical interest, it
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The topic of seismic anisotropy in exploration and exploitation has seen a great deal of progress in the past decade‐and‐a‐half. The principal reason for this is the increased (and increasing) quality of seismic data, of the processing done to it, and of the interpretation expected from it. No longer an academic subject of little practical interest, it
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Seismic anisotropy beneath Southern Tibet
Acta Seismologica Sinica, 1996We have examined shear-wave splitting in teleseismic waves (SKS) recorded on 20 seismographs deployed on a profile that followed the Southern Tibet highway during the 1992 Sino-French seismic experiment. The “cross-correlation” method is applied to derive splitting parameters.
Qing-Tian Lü +4 more
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Geophysical Prospecting, 2005
ABSTRACTShales are a major component of sedimentary basins, and they play a decisive role in fluid flow and seismic‐wave propagation because of their low permeability and anisotropic microstructure. Shale anisotropy needs to be quantified to obtain reliable information on reservoir fluid, lithology and pore pressure from seismic data, and to understand
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ABSTRACTShales are a major component of sedimentary basins, and they play a decisive role in fluid flow and seismic‐wave propagation because of their low permeability and anisotropic microstructure. Shale anisotropy needs to be quantified to obtain reliable information on reservoir fluid, lithology and pore pressure from seismic data, and to understand
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Seismic anisotropy of a building
The Leading Edge, 2006The Robert A. Millikan Library is a reinforced concrete building located on the campus of the California Institute for Technology in Pasadena, USA. The building has been studied by earthquake engineers since it was first instrumented in the late 1960s. Continuous measurements at 200 Hz are made by 19-bit real-time seismometers on each of the 10 floors ...
David Thompson, Roel Snieder
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2007
The main breakthrough in seismology during the last ten years is related to the emergence and development of more and more sophisticated 3-dimensional imaging techniques, usually named seismic tomography, from the local scale up to global scale of the Earth.
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The main breakthrough in seismology during the last ten years is related to the emergence and development of more and more sophisticated 3-dimensional imaging techniques, usually named seismic tomography, from the local scale up to global scale of the Earth.
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Observations of seismic anisotropy in prestack seismic data
SEG Technical Program Expanded Abstracts 2007, 2007A method for displaying prestack seismic data that highlights azimuthal anisotropy is shown. Using this method to make observations of azimuthal anisotropy in prestack seismic data makes it clear that azimuthal anisotropy is observed in all types of seismic data and that it is widespread from the shallowest to the deepest seismic reflectors. Therefore,
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