Results 111 to 120 of about 21,832 (251)
Thermal and mechanical structure of the upper mantle: A comparison between continental and oceanic models [PDF]
Temperature, velocity, and viscosity profiles for coupled thermal and mechanical models of the upper mantle beneath continental shields and old ocean basins show that under the continents, both tectonic plates and the asthenosphere, are thicker than they
Froidevaux, C. +2 more
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Impact of global seismicity on sea level change assessment
, 2005 We analyze the effect of seismic activity on sealevel variations, by computing the time-dependent vertical crustal movement and geoid change due to coseismic deformations and postseismic relaxation effects.
Melini, D., Piersanti, A.
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Contribution of viscoelastic flow in earthquake cycles within the lithosphere‐asthenosphere system
, 2016 Faults slip relaxes lithospheric stress imposed by mantle flow and in turn transfers stress to the ductile regions. The interplay of these systems governs the style of deformation at plate boundaries including the recurrence of seismic events.
Valère R. Lambert, S. Barbot
semanticscholar +1 more source
Geophysical Research LettersThe asthenosphere is commonly defined as an upper mantle zone with low velocities and high attenuation of seismic waves, and high electrical conductivity. These observations are usually explained by the presence of partial melt, or by a sharp contrast in
V. Patočka, H. Čížková, J. Pokorný
doaj +1 more source
Azimuthal Variation in the Surface Wave Velocity of the Philippine Sea Plate
Journal of Marine Science and EngineeringA study of the azimuthal variation in the surface wave fundamental-mode phase velocity is performed for the Philippine Sea Plate (PSP). This azimuthal variation has been anisotropically inverted for the PSP to determine the isotropic and anisotropic ...
Víctor Corchete
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Postseismic surface deformations due to lithospheric and asthenospheric viscoelasticity [PDF]
A model is proposed for post seismic surface deformations attributing them to lithospheric and asthenospheric viscoelasticity. The model predicts that the deformations due to lithospheric viscoelasticity depend on the ratio of the effective shear modulus
Cohen, S. C.
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Geophysical Research LettersThis study probes the lithosphere‐asthenosphere system beneath 155 Ma Pacific seafloor using teleseismic S‐to‐p receiver functions at the Pacific Lithosphere Anisotropy and Thickness Experiment project ocean‐bottom‐seismometers. Within the lithosphere, a
K.‐X. Chen +2 more
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Postseismic viscoelastic surface deformation and stress. Part 1: Theoretical considerations, displacement and strain calculations [PDF]
A model of viscoelastic deformations associated with earthquakes is presented. A strike-slip fault is represented by a rectangular dislocation in a viscoelastic layer (lithosphere) lying over a viscoelastic half-space (asthenosphere).
Cohen, S. C.
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Communications Earth & EnvironmentThe origin of intraplate basalts remains controversial, despite numerous isotope and seismic studies. Here we employ thermodynamic modeling with MAGEMin to integrate the Sr-Nd-Hf isotopes of basaltic volcanics with the seismic velocities of their mantle ...
Zongpeng Yang +7 more
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A multilayer model of time dependent deformation following an earthquake on a strike-slip fault [PDF]
A multilayer model of the Earth to calculate finite element of time dependent deformation and stress following an earthquake on a strike slip fault is discussed. The model involves shear properties of an elastic upper lithosphere, a standard viscoelastic
Cohen, S. C.
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