seismic anisotropy
Domains of Archean mantle lithosphere deciphered by seismic anisotropy – inferences from the LAPNET array in northern Fennoscandia
... large-scale anisotropy of the upper mantle, we first apply crustal corrections to account for effects of Moho- depths and crustal-velocity ...of seismic anisotropy, ...fossil anisotropy in the ...
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Analysis and forward modeling of seismic anisotropy during the ongoing eruption of the Soufriere Hills Volcano, Montserrat, 1996-2007
... earthquake waveforms from all three‐component stations on Montserrat and neighboring islands (TRN stations within 100 km of Montserrat) whose orientations could be verified through analysis of Rayleigh wave particle ...
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Extension and stress during continental breakup: seismic anisotropy of the crust in Northern Afar
... the anisotropy in this ...rift-aligned anisotropy occurs in the vicinity of the Erta-Ale volcanic segment, which has been shown to host an abun- dance of aligned melt and magmatic structures (Pagli et ...
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Reservoir stress path and induced seismic anisotropy: Results from linking coupled fluid-flow/geomechanical simulation with seismic modelling
... of seismic monitoring, changes in the stress field can lead to microseismicity as well as nonlinear changes in seismic velocity and, in cases where stress anisotropy develop, to stress-induced ...
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Characterization of olivine fabrics and mylonite in the presence of fluid and implications for seismic anisotropy and shear localization
... change seismic anisotropy, two lenses of spinel lherzolite were studied by scanning electron microscope (SEM) and electron back-scattered diffraction (EBSD) ...calculated seismic properties for the ...
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The effect of pressure on the elastic properties and seismic anisotropy of diopside and jadeite from atomic scale simulation
... elastic anisotropy of diopside will have an effect on the bulk anisotropy of the deforming upper ...of anisotropy generation around a mid-ocean ridge resulted in significant changes to the predicted ...
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Differentiating flow, melt, or fossil seismic anisotropy beneath Ethiopia
... of seismic anisotropy, the variation of seismic wave speed with direction of propagation, offers the chance to differentiate between some of these mechanisms as it can highlight mantle flow through ...
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Quantification of the Impact of Seismic Anisotropy in Microseismic Location
... Seismic anisotropy in sedimentary rocks, due to either layered bedding or fracturing, may bias microseismic locations if unaccounted in velocity ...5% seismic anisotropy, if not properly ...
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Some remarks on the origin of seismic anisotropy in the D” layer
... where L is the thickness of the layer and δ is the thickness of the boundary layer. Thus for a typical Rayleigh number of the Earth’s mantle, Ra ∼ 10 7 (e.g., Jarvis and Peltier, 1989), one expects a factor of ∼ 10–15 ...
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Development of texture and seismic anisotropy during the onset of subduction
... 30% enstatite [e.g., Dick et al., 1984 ; Boudier and Nicolas, 1995 ; Jaraslow et al., 1996], we run our simulations with 100% olivine. This will over- estimate the overall LPO intensity and hence the aggregate ...
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Seismic anisotropy inferred from direct S-wave-derived splitting measurements and its geodynamic implications beneath southeastern Tibetan Plateau
... receiver-side seismic anisotropy that can be most likely inferred from directionally averaged SKS splitting parameters at a given reference ...double-layer anisotropy (Silver and Sav- age, 1994), ...
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MSAT - a new toolkit for the analysis of elastic and seismic anisotropy
... of seismic anisotropy is the tendency for the crystal lattices of a material undergoing plastic defor- mation to ...The seismic anisotropy as a function of propagation di- rection through a ...
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Feasibility of time-lapse AVO and AVOA analysis to monitor compaction-induced seismic anisotropy
... 15 Figure 12 displays the time-lapse changes in P-P AVOA due to induced HTI anisotropy equation 4 16 for the top and bottom reservoir horizons between the baseline and monitor1, and ba[r] ...
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The effect of pressure on the elastic properties and seismic anisotropy of diopside and jadeite from atomic scale simulation
... universal anisotropy index (A U , derived from the Voigt and Reuss es- timates of the isotropic average bulk and shear moduli, [6]) are given as a function of ...
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Seismic anisotropy from compositional banding in granulites from the deep magmatic arc of Fiordland, New Zealand
... at 600 MPa Mean (km/s) Table 3. Densities, and P- and S-wave velocities and anisotropies calculated from the EBSD data and elastic constants using VRH average with AEH correction (AEH) and simple VRH average (VRH). ...
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Mid-mantle deformation inferred from seismic anisotropy
... Although there must be anisotropy in the lower mantle, it may still be slab related. Numerical simulations have shown that large deviatoric stresses are transmitted into the lower mantle when a rigid slab ...
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The Sumatra subduction zone: seismicity, velocity structure and seismic anisotropy
... of anisotropy, which originates from 2D corner flow within the mantle wedge, is modeled with the a- axis orientated approximately perpendicular to the trench (050°) and a dilution factor of 13% (equivalent to ~ 2 ...
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Seismic Refraction and Electrical Resistivity Tests for Fracture Induced Anisotropy in a Mountain Watershed
... expected anisotropy in the geophysical parameters. From the seismic anisotropy measurements (tables 2-4) I identify that the location that portrays the highest Vp azimuthal anisotropy is Lower ...
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Granular flows : fluidization and anisotropy
... the anisotropy at a certain point in ...on anisotropy, but also on ...of anisotropy from the presheared state is logarithmic in ...that anisotropy grows exponentially in time ...
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Anisotropy and nonlinearity in superlattices II
... the anisotropy increases (smaller c, so does the inverse screening length j leading to a faster reduction of the screened Coulomb inter- action and consequently larger optical nonlinearity, measured here directly ...
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