Results 61 to 70 of about 3,352 (155)

Globally distributed subducted materials along the Earth's core-mantle boundary: Implications for ultralow velocity zones. [PDF]

Sci Adv, 2023
Hansen SE, Garnero EJ, Li M, Shim SH, Rost S.   +4 more
europepmc   +1 more source

Patchy Weather at the Core-Mantle Boundary

, 2020
I decided to simplify the title of our new paper (Muir & Tkalčić), significantly, for the purposes of presenting it to a general audience.
openaire   +1 more source

High thermal conductivity of the Earth's core and geodynamo

Vestnik MGTU
The geomagnetic field is generated by dynamo processes in the Earth's core. This process is supported by the cooling of the planet and the growth of the solid core. It is known that the magnetic field existed long before the appearance of the solid core,
Reshetnyak M. Yu.
doaj   +1 more source

Subducted Carbon From Mantle Plume in Mid‐Ocean Ridge Basalts

Geophysical Research Letters
Deciphering the Earth's deep carbon cycle, from mantle plumes to mid‐ocean ridges, remains incompletely understood. In this study, we analyze the magnesium isotope composition of basalts collected from the South Mid‐Atlantic Ridge (SMAR), which have been
Haitao Zhang, Quanshu Yan, Xuefa Shi, Chuanshun Li, Fang Huang, Qiuyu Wen   +5 more
doaj   +1 more source

Subduction‐Related Volcanic Activity as a Proxy for Global Subduction Flux Over the Past Billion Years, and Its Correlation With Geomagnetic Superchrons

Geophysical Research Letters
We investigate the frequency of subduction‐related volcanic events over the past billion years. Our analysis reveals distinct peaks and troughs interpreted as significant fluctuations in global subduction flux.
Jean Besse, Yves Gallet
doaj   +1 more source

Turbulence in Earth’s core generates large topographic torques on the mantle

Communications Earth & Environment
e Seismic and geodynamic studies indicate that the boundary between the Earth’s liquid outer core and solid mantle is not spherical, but is likely characterized by topography in the form of inverted mountains and valleys that have typical amplitudes of ...
Tobias G. Oliver, Eric G. Blackman, John A. Tarduno, Michael A. Calkins   +3 more
doaj   +1 more source

How P‐Wave Scattering Throughout the Entire Mantle Mimics the High‐Frequency Pdiff and Its Coda

Geophysical Research Letters
We document the arrival of seismic energy in the core shadow zone up to large distances beyond 150° more than 100 s prior to the core phases. Numerical simulations of the energy transport in an established heterogeneity model show that scattering ...
Tuo Zhang, Christoph Sens‐Schönfelder, Marcelo Bianchi, Klaus Bataille   +3 more
doaj   +1 more source

Tomographic consistency in imaging lower-mantle plumes and their link to European Cenozoic Rift Volcanism

Earth and Planetary Physics
A wide northeast-trending belt of intraplate alkaline volcanism, exhibiting similar geochemical characteristics, stretches from the Eastern Atlantic Ocean to the Cenozoic rift system in Europe.
Chiara Civiero, Angelo De Min
doaj   +1 more source

Teleseismic Array Studies of Earth’s Core-Mantle Boundary

, 2011
Bibliography: p.
openaire   +2 more sources

A model for the geomagnetic field reversal rate and constraints on the heat flux variations at the core-mantle boundary. [PDF]

Sci Rep, 2020
Carbone V, Alberti T, Lepreti F, Vecchio A.   +3 more
europepmc   +1 more source