Results 41 to 50 of about 3,205,657 (173)
Interiors of Terrestrial Planets in Metric-Affine Gravity
Universe, 2021 Using a semiempirical approach, we show that modified gravity affects the internal properties of terrestrial planets, such as their physical characteristics of a core, mantle, and core–mantle boundary.
Aleksander Kozak, Aneta Wojnar
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High Pressure Melting Curve of Fe Determined by Inter‐Metallic Fast Diffusion Technique
Geophysical Research Letters, 2023 The heat extracted from the core by the overlying mantle across the core‐mantle boundary controls the thermal evolution of the core. This in turn leads to the solidification of the inner core in association with the exsolution of light alloying elements ...
Innocent C. Ezenwa, Yingwei Fei
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Properties of the Core-Mantle Boundary [PDF]
Symposium - International Astronomical Union, 1988 The core-mantle boundary (CMB), separating the molten metallic core from the overlying solid silicate mantle, marks the largest discontinuity in mechanical properties within the Earth. The ∼ 200 km thick region just above the CMB, named D″ by Bullen (1950), is characterized by an anomalous gradient in seismic velocity versus depth.
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Determination of a steady velocity field in a rotating frame of reference at the surface of the Earth's core [PDF]
, 1996 We relax the steady-motions theorem by solving for a steady velocity field at the surface of the core in a frame of reference drifting at a linear rate with respect to an observer fixed in the mantle frame of reference.
Whaler, Kathy; id_orcid, Davis, R. G.
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Inner core static tilt inferred from intradecadal oscillation in the Earth’s rotation
Nature Communications, 2023 The presence of a static tilt between the inner core and mantle is an ongoing discussion encompassing the geodynamic state of the inner core. Here, we confirm an approximate 8.5 yr signal in polar motion is the inner core wobble (ICW), and find that the ...
Yachong An +4 more
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Seismic waveform inversion for core–mantle boundary topography [PDF]
Geophysical Journal International, 2014 ISSN:0956 ...
Colombi, Andrea +3 more
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Geodesy and Geodynamics, 2019 In response to the primary electric field originated by the fluid-core-dynamo, electric charges accumulate at the boundaries of a solid conducting D″ layer due to the poor circuitry conditions until the irrotational primary electric field is neutralized.
Ming Fang, Xinhao Liao
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Hot action at the core‐mantle boundary
Eos, Transactions American Geophysical Union, 1994 Recent discoveries about the Earth's most prominent internal feature, the core‐mantle boundary, were revealed at a workshop just held at the University of California at Berkeley. The latest seismological evidence points to the interface between the mantle and core being among the most dynamically active regions of the planetary interior.Though distant,
Raymond Jeanloz, Barbara Romanowicz
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Modeling two‐dimensional structure at the core‐mantle boundary [PDF]
Journal of Geophysical Research: Solid Earth, 1996 Recent studies of SKS waveform modeling emphasize the strong variation of seismic properties at the core‐mantle boundary (CMB) and the need for two‐dimensional and three‐dimensional waveform modeling capabilities. In particular, the bifurcation of SKS into SP dKS and SKP dS near 110° shows strong regional variations.
Helmberger, D. V. +2 more
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Grain Boundary Diffusion of Ferropericlase: Implications for the Core‐Mantle Interaction
Geophysical Research LettersGeophysical observations indicate that iron enrichment of various spatial scales may be present in the lowermost mantle. Various mechanisms have been proposed to explain the process of iron infiltration from the core to the mantle, each with its own ...
Yihang Peng +3 more
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