Results 141 to 150 of about 3,205,657 (173)
Some of the next articles are maybe not open access.
Reaction of iron and silica at core–mantle boundary conditions
Physics of the Earth and Planetary Interiors, 2004Abstract Chemical interaction between iron and silica have been studied at pressures up to 140 GPa and temperatures over 3800 K in electrically- and laser-heated diamond anvil cells and in multianvil apparatus. At pressures below 55–60 GPa and high temperatures, iron and silica react to form iron oxide and iron–silicon alloy with up to 5 wt.% Si ...
Dubrovinsky, L. +7 more
openaire +2 more sources
The power balance at the core–mantle boundary
Physics of the Earth and Planetary Interiors, 2002The power () required by the mantle from the core, previously thought to be about 2.3 TW, is shown to be about 8 TW. Mantle heat transfer mechanisms near the core–mantle boundary (CMB) called sinks control power input into the mantle. The sinks are mechanisms for: heating the slab at the base of the mantle sufficiently to equilibrate its temperature ...
openaire +1 more source
An α-effect on the core mantle boundary
Geophysical & Astrophysical Fluid Dynamics, 1991Abstract A boundary α-effect based on the reflection of hydromagnetic waves from the core-mantle boundary is studied in a simple plane model. The main features of this α-effect, namely: the concentration near the boundary, the change of sign of α in the layer, enhanced values of α and geometrical behavior, are in good agreement with those assumed by ...
openaire +1 more source
Instability of a reaction zone at the core-mantle boundary (CMB)
Earth, Moon, and Planets, 1994The core-mantle reaction proceeds on two scales: the short-scale chemical reaction leading to local equilibrium and the large-scale dispersal of reaction products. The second process is connected with a growth of the CMB-radius and may be described with application of the diffusion equation. The departure from a stationary interface is calculated using
openaire +2 more sources
Nutation Damping from Core-Mantle Boundary Topography
Periodic gravitational forcing by the Moon and Sun produces small oscillations in Earth's rotation known as nutations. Nutations are amplified by a resonance with a natural motion of the liquid core called the Free Core Nutation, whose amplitude is limited by friction-like processes at the core--mantle boundary.Rekier, J. +4 more
openaire +1 more source
The core–mantle boundary under the Gulf of Alaska: No ULVZ for shear waves
Earth and Planetary Science Letters, 2000Rob D van der Hilst
exaly