منابع مشابه
Measurements of Shear-wave Azimuthal Anisotropy with Cross-dipole Logs
Three methods for analyzing azimuthal anisotropy from cross-dipole logs are applied to data from the Powder River Basin in Wyoming. These techniques are based on the phenomena of flexural wave splitting in anisotropic materials and are analogous to the techniques used for VSP data processing. The four-component cross-dipole logging data obtained with a Schumberger tool from a vertically-fractur...
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Azimuthal anisotropy is common in layered basins with strong folding and fracturing effects. Traditional processing on individual azimuths usually yields images with inconsistent depths. In this paper, we propose to use an image obtained from one azimuth to constrain the image-space velocity analysis on other azimuths. This method directly tackles the differences in anisotropic parameters among...
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Surface wave dispersion measurements for Love wave overtones carry evidence of azimuthal anisotropy in the transition zone of Earth's mantle (400 to 660 kilometers deep). A Backus-Gilbert inversion of anisotropic phase velocity maps, with resolution kernels mainly sensitive to the transition zone, shows a robust long-wavelength azimuthally anisotropic velocity structure. This observation puts n...
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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. Full waveform modeling of the split shear waves for paths beneath the Caribbean requires azimuthal anisotrop...
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One of the most exciting results at RHIC is the suppression of hadrons in central Au+Au collisions, compared to p+p collisions [1] and to cold nuclear matter [2] at high pT . This suppression is well described by very different pQCD-based energy loss models in the light flavor sector [3] . However, the observation of a similar level of suppression for the heavy flavor [4], and the unexpected sm...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2014
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2014.03.021