Results 61 to 70 of about 1,787 (204)

Sulfur‐Bearing hcp Iron for Earth's Inner Core

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Earth's iron core is believed to contain light impurities which should have been included during core formation. In order to place constraints on core composition, here we report the effect of sulfur on density of hexagonal close‐packed (hcp) iron which was not previously examined, using laser‐heated diamond anvil cells with in situ ...
Emiko Sugimura‐Komabayashi, Samuel Thompson, Tetsuya Komabayashi, Damien Freitas, Mark Robertson, Nico Giordano, Anna Pakhomova, Hanns‐Peter Liermann   +7 more
wiley   +1 more source

Determining Magnetic Field Intensity and Direction From the Anisotropy of Magnetic Remanence in Sediments

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Anisotropy of magnetic remanence (AMR) holds promise for quantifying relative paleointensity values from sedimentary rocks. A proof of concept was established for applied fields that exceeded the intensity of the geomagnetic field. Under Earth‐like fields, large uncertainties necessitate the development of a new approach to improve the ...
Felix K. Ostermeier, Stuart A. Gilder, Michael R. Wack, Josef Ježek, Kuang He, David Finn   +5 more
wiley   +1 more source

Geodynamo Simulations with XSHELLS + SHTns

, 2015
Details concerning the Spherical Harmonic Transform library SHTns and the geodynamo simulation code XSHELLS. Insights into a big simulation using XSHELLS and SHTns are given at the end.
Nathanael Schaeffer (474534)
core   +1 more source

База данных параметров базисных мод и коэффициентов cпектральных моделей геодинамо

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki
Спектральные модели геодинамо строятся на основании конечного набора базисных стационарных полей (мод). Поля скорости, температуры и магнитной индукции представляются в моделях в виде линейных комбинаций базисных мод с коэффициентами (амплитудами ...
Водинчар, Г.М., Казаков, Е.А., Лисюткин, С.С.   +2 more
doaj   +1 more source

An Ensemble Algorithm Based Component for Geomagnetic Data Assimilation

Terrestrial, Atmospheric and Oceanic Sciences, 2015
Geomagnetic data assimilation is one of the most recent developments in geomagnetic studies. It combines geodynamo model outputs and surface geomagnetic observations to provide more accurate estimates of the core dynamic state and provide accurate ...
Zhibin Sun and Weijia Kuang
doaj   +1 more source

Electronic correlations and transport in iron at Earth’s core conditions

Nature Communications, 2020
The heat and electrical conductivity of Earth’s core matter represent key input quantities for geophysical models of the Earth’s core evolution and geodynamo.
L. V. Pourovskii, J. Mravlje, M. Pozzo, D. Alfè   +3 more
doaj   +1 more source

Pressure Dependence of Liquid Iron Viscosity From Machine‐Learning Molecular Dynamics

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract We have developed a machine‐learning potential that accurately models the behavior of iron under the conditions of Earth's core. By performing numerous nanosecond scale equilibrium molecular dynamics simulations, the viscosities of liquid iron for the whole outer core conditions are obtained with much less uncertainty.
Kai Luo, Xuyang Long, R. E. Cohen
wiley   +1 more source

High Geomagnetic Reversal Frequency During the Middle to Late Ediacaran (∼570 Ma) Constrained by Integrated Magneto‐ and Cyclostratigraphy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Ediacaran–Cambrian (∼635–539 Ma) geomagnetic field is characterized by unusually high reversal rates and markedly weakened field strength. Estimates of these reversal frequencies can reveal key aspects of deep Earth dynamics and their potential influence on surface environments and early complex life.
J. W. L. Afonso, R. M. Rocha, D. R. Franco, N. B. Dos Santos, C. G. Leandro, P. Franceschinis, A. E. Rapalini, M. J. Arrouy, L. E. Gómez‐Peral, D. G. Poiré, S. Caetano‐Filho, H. D. Brito, R. I. F. Trindade   +12 more
wiley   +1 more source

Current state of Computational Geodynamo

, 2016
This project describes the physical and mathematical framework for simulating Earth's dynamo using Magneto-Hydrodynamics. Description of the technique can be found in review papers on geodynamo by Gltazmaier and Roberts and Kono.
arushi saxena (3371474)
core   +1 more source

Testing the Accuracy of Paleointensity Estimates Using Experimental Pottery Assemblages

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Paleointensity estimates from archaeological pottery represent a key source of information on Holocene variations in geomagnetic field intensity. Yet, pottery rarely exhibits ideal single‐domain behavior that fully satisfies the theoretical assumptions underlying absolute paleointensity methods.
Lior Bar‐Sovik, Ron Shaar, Agnès Genevey, Yves Gallet, Yoav Vaknin, Yuval Goren   +5 more
wiley   +1 more source