Results 11 to 20 of about 3,352 (155)
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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Frontiers in Earth Science, 2021 There is a considerable amount of literature on the electrical resistivity of iron at Earth’s core conditions, while only few studies have considered iron and iron-alloys at other planetary core conditions.
Meryem Berrada, Richard A. Secco
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Observations of core‐mantle boundary Stoneley modes [PDF]
Geophysical Research Letters, 2013 AbstractCore‐mantle boundary (CMB) Stoneley modes represent a unique class of normal modes with extremely strong sensitivity to wave speed and density variations in the D” region. We measure splitting functions of eight CMB Stoneley modes using modal spectra from 93 events with Mw> 7.4 between 1976 and 2011.
Koelemeijer, P, Deuss, A, Ritsema, J
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Carbon Storage in Earth's Deep Interior Implied by Carbonate‐Silicate‐Iron Melt Miscibility
Geochemistry, Geophysics, Geosystems, 2023 Carbonate melts have been proposed to exist in the lower mantle, but their interaction with other lower mantle melt compositions is poorly understood. To understand miscibility in the carbonate‐silicate‐metal melt system, we simulate endmember, binary ...
A. H. Davis +3 more
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Viscomagnetic torque at the core mantle boundary [PDF]
Geophysical Journal International, 2006 A magneto-hydrodynamic model of boundary layers at the Core-Mantle Boundary (CMB) is derived and used to compute the viscous and electromagnetic torques generated by the Earth's nutation forcing. The predicted electromagnetic torque alone cannot account for the dissipation estimated from the observations of the free core nutation.
Deleplace, Bérangère, Cardin, Philippe
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The root to the Galápagos mantle plume on the core-mantle boundary
Seismica, 2022 Ultra-low velocity zones (ULVZs) are thin anomalous patches on the boundary between the Earth's core and mantle, revealed by their effects on the seismic waves that propagate through them. Here we map a broad ULVZ near the Galápagos hotspot using shear-
Sanne Cottaar +3 more
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Geophysical Research Letters, 2023 Geodynamic modeling and seismic studies have highlighted the possibility that a thin layer of low seismic velocities, potentially molten, may sit atop the core‐mantle boundary but has thus far eluded detection.
Stuart Russell +3 more
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Geomagnetic Dipole Changes and Upwelling/Downwelling at the Top of the Earth's Core
Frontiers in Earth Science, 2018 The convective state of the top of Earth's outer core is still under debate. Conflicting evidence from seismology and geomagnetism provides arguments for and against a thick stably stratified layer below the core-mantle boundary.
Ludovic Huguet +3 more
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Mantle cooling regulation and ancient geomagnetic field
Russian Journal of Earth Sciences, 2022 The joined core and mantle thermal evolution model of the Earth for 6 Gy is considered. The model describes evolution of the heat fluxes, temperature distribution in the Earth, energy available for the magnetic field generation. Using Monte Carlo method
Reshetnyak Maxim
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GRACE—Gravity Data for Understanding the Deep Earth’s Interior
Remote Sensing, 2020 While the main causes of the temporal gravity variations observed by the Gravity Recovery and Climate Experiment (GRACE) space mission result from water mass redistributions occurring at the surface of the Earth in response to climatic and anthropogenic ...
Mioara Mandea +2 more
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