Results 21 to 30 of about 19,919 (190)
Three‐dimensional flow in the subslab mantle
Geochemistry, Geophysics, Geosystems, 2014 Three‐dimensional models of mantle flow at subduction zones make it possible to explain the common occurrence of trench‐parallel subslab seismic anisotropy.
Karen Paczkowski +3 more
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Mantle Flow Pattern Associated With the Patagonian Slab Window Determined From Azimuthal Anisotropy
Geophysical Research Letters, 2022 Geological processes in Southern Patagonia are affected by the Patagonian slab window, formed by the subduction of the Chile Ridge and subsequent northward migration of the Chile Triple Junction.
Walid Ben‐Mansour +6 more
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Seismica, 2022 Geodynamic tomography, an imaging technique that incorporates constraints from geodynamics and mineral physics to restrict the potential number of candidate seismic models down to a subset consistent with geodynamic predictions, is applied to a thermal ...
John Keith Magali, Thomas Bodin
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Seismic evidence for subduction-induced mantle flows underneath Middle America
Nature Communications, 2020 The motions of subducted slabs are expected to drive mantle flow around slab edges, however, evidence of deep mantle flow has so far remained elusive.
Hejun Zhu, Robert J. Stern, Jidong Yang
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Multidisciplinary Constraints on the Thermal‐Chemical Boundary Between Earth's Core and Mantle
Geochemistry, Geophysics, Geosystems, 2022 Heat flux from the core to the mantle provides driving energy for mantle convection thus powering plate tectonics, and contributes a significant fraction of the geothermal heat budget.
Daniel A. Frost +9 more
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Upper Mantle Anisotropy and Flow Beneath the Pacific Ocean Revealed by Differential PS‐SKS Splitting
Geophysical Research Letters, 2023 Upper mantle anisotropy has been mapped beneath continents at high spatial resolution. Beneath the oceans, however, shear wave splitting constraints on upper mantle anisotropy are sparse, due to the paucity of seismic receivers. A technique that does not
Jonathan Wolf, Maureen D. Long
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Joint Interpretation Results of Gravitational and Thermal Fields for the Ural Region
Russian Journal of Earth Sciences, 2023 A method for solving conjugation problems for the Poisson equation is implemented, which makes it possible to interpret potential fields (gravitational and stationary thermal fields) based on unified grid algorithms.
Martyshko Pyotr +2 more
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Noble gases confirm plume-related mantle degassing beneath Southern Africa
Nature Communications, 2019 Southern Africa is characterised by unusually elevated topography and abnormal heat flow. This can be explained by thermal perturbation of the mantle, but the origin of this is unclear.
S. M. V. Gilfillan +10 more
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Geochemistry, Geophysics, Geosystems, 2021 Observations of seismic anisotropy just above the core‐mantle boundary are a powerful way to understand the dynamics of the lowermost mantle. Here we present models of seismic anisotropy in the lowermost mantle beneath Siberia based on new and previously
Neala Creasy +3 more
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Depth-varying azimuthal anisotropy and mantle flow in the Patagonian slab window
SeismicaSubduction of spreading ridges forms slab windows which perturb the local structure and dynamics of the upper mantle. Slab windows may alter the pattern of mantle flow and serve as portals for the exchange of mantle material between upper mantle ...
Hannah Mark +3 more
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