Results 21 to 30 of about 3,352 (155)
Outer Core Stratification From the High Latitude Structure of the Geomagnetic Field
Frontiers in Earth Science, 2018 The presence of stable stratification has broad implications for the thermal and compositional state of the outer core, the evolution of Earth's deep interior, and the energetics of the geodynamo.
Peter Olson +5 more
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Understanding the effects of the core on the nutation of the Earth
Geodesy and Geodynamics, 2017 In this review paper, we examine the changes in the Earth orientation in space and focus on the nutation (shorter-term periodic variations), which is superimposed on precession (long-term trend on a timescale of years).
Véronique Dehant +7 more
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From global tectonics to global geodynamics
Геофизический журнал, 2018 Observations suggest that global (plate) tectonics operates on the Earth. The most characteristic features of the global tectonics are ocean floor spreading in mid-ocean ridges and subduction in deep-sea trenches.
O. Aryasova, Ya. Khazan
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Data in Brief, 2023 New measurements shear-wave splitting (SWS) were determined using a teleseismic dataset from 21 broadband seismic stations belonging to the GSN-BX network in Botswana archived at IRIS-DMC.
Moikwathai Moidaki
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A coupled core-mantle evolution: review and future prospects
Progress in Earth and Planetary Science, 2020 In this review, I provide the current status and future prospects for the coupled core-mantle evolution and specifically summarize the constraints arising from geomagnetism and paleomagnetism on the long-term secular variations of the geomagnetic field ...
Takashi Nakagawa
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Diamonds sampled by plumes from the core–mantle boundary [PDF]
Nature, 2010 Diamonds are formed under high pressure more than 150 kilometres deep in the Earth's mantle and are brought to the surface mainly by volcanic rocks called kimberlites. Several thousand kimberlites have been mapped on various scales, but it is the distribution of kimberlites in the very old cratons (stable areas of the continental lithosphere that are ...
Torsvik, T. +4 more
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Avalanches at the core‐mantle boundary [PDF]
Geophysical Research Letters, 2002 The partial collapse of topographic structure at the core‐mantle boundary (CMB) in avalanches, slumps or turbidity flows, would cause sudden temperature changes in both the upper core and the lower mantle. Although such collapses are hypothetical, it is interesting to investigate the potential consequences.
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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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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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