Results 221 to 230 of about 3,361 (261)

Interpreting seismic data in the presence of azimuthal anisotropy; or azimuthal anisotropy in the presence of the seismic interpretation

The Leading Edge, 2002
Measuring P-wave azimuthal anisotropy has been in the recent past an elusive task; therefore, the interpreter ignored this attribute of the seismic data and left the subject to the research and technology group geophysicists. Conversely, the interpreting geophysicist knew that, when measured, the anisotropy could yield important reservoir properties ...
Marty Williams, Edward Jenner
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Analysis Methodology for Azimuthal Anisotropy

72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010
Here is a prescription for the implementation of a data-driven analysis procedure for determining accurate horizontal anisotropic velocity parameters. The high resolution method is simple and fast and can be quickly applied to 3D surveys. Wide and multiple azimuth datasets are making it clear that azimuthal anisotropy is more prevalent than most ...
K. Bishop, A. Osadchuk, M. Stanley
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Azimuthal Anisotropy and the QGP

AIP Conference Proceedings, 2006
Study of azimuthal anisotropy have played very important role at RHIC(Relativistic Heavy Ion Collider) Physics. The large azimuthal anisotropy is the proof of very early thermalization of the system which cannot be obtained without introducing interactions at the partonic level.
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Detection of azimuthal anisotropy

SEG Technical Program Expanded Abstracts 1989, 1989
The effect of azimuthal anisotropy on conventional P wave data is not a traditional subject for discussion in geophysical conventions. As a considerable number of 3D surveys, most of them involving a wide azimuth range, have been recorded and processed over a number of years, this situation is surprising: whenever accuracy and resolution are required ...
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Variable Azimuthal Anisotropy in Earth's Lowermost Mantle

Science, 2004
A persistent reversal in the expected polarity of the initiation of vertically polarized shear waves that graze the D″ layer (the layer at the boundary between the outer core and the lower mantle of Earth) in some regions starts at the arrival time of horizontally polarized shear waves.
Edward J, Garnero, Valérie, Maupin, Thorne, Lay, Matthew J, Fouch   +3 more
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Azimuthal anisotropy of scatterometer measurements over land

IEEE Transactions on Geoscience and Remote Sensing, 2006
Studies of the Earth's land surface involving scatterometers are becoming an increasingly important application field of microwave remote sensing. Similarly to scatterometer observations of ocean waves, the backscattering coefficient (sigma0) response of land surfaces depends on both the incidence and azimuth angle under which the observations are made.
Zoltan Bartalis, Klaus Scipal, Wolfgang Wagner 0001   +2 more
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Azimuthal anisotropy: Is it really ubiquitous?

SEG Technical Program Expanded Abstracts 2007, 2007
Following the groundbreaking work of Crampin (1985), Alford (1986), Lynn and Thomsen (1990) and Lewis et al (1991), it quickly became conventional wisdom in the industry that substantial shear-wave azimuthal anisotropy is nearly ubiquitous in the subsurface. Crampin and Zatsepin (1995) made theoretical arguments that implied that most of the subsurface
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A robust workflow for detecting azimuthal anisotropy

SEG Technical Program Expanded Abstracts 2011, 2011
Summary The prestack analysis of amplitude variation with offset/angle (AVO/AVA) has been a useful hydrocarbon exploration tool for a number of years. As this technology matured, forward modeling became an important tool to understand the seismic response, to ensure acquisition parameters were adequate for its detection, and to calibrate and validate ...
Michael Davidson, Herbert Swan, Samik Sil, Jack Howell, Robert Olson, Changxi Zhou   +5 more
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Azimuth-dependent reflection anisotropy spectroscopy

Journal of Applied Physics, 2003
A detailed explanation of “azimuth dependent reflection anisotropy spectroscopy” (ADRAS) [B. F. Macdonald and R. J. Cole, Appl. Phys. Lett. 80, 3527 (2002)] is presented. Experimental data and simulations are used to illustrate the greater information content of ADRAS compared to the standard reflection anisotropy technique. The application of ADRAS to
B. F. Macdonald, J. S. Law, R. J. Cole
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Azimuth anisotropy prediction and correction of wide-azimuth seismic data

Interpretation
Abstract For seismic wave propagation in media with horizontal transverse isotropy (HTI), kinematic and dynamic attributes are anisotropic. P waves propagate slower in perpendicular to fracture azimuth than parallel to it, whereas reflection strength and frequency vary with azimuth. The azimuthal effects on reflection coefficients and
Liyan Zhang, Ang Li, Nianxu Xi
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