Results 61 to 70 of about 1,386 (209)

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

Mercury's Tectonic and Geodynamic History: 1. Contractional Tectonic Landform Analysis and Tectonic Strain Using Machine Learning

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Mercury's tectonic record is dominated by shortening landforms, including lobate scarps, high‐relief ridges and wrinkle ridges. Previous analyses of these structures have used displacement–length ratios to constrain the planet's global contraction to a range of either no more than 2 km or up to 7 km.
A. Broquet, J. C. Andrews‐Hanna
wiley   +1 more source

Motional Induction in Ganymede's Ocean

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract We investigate the magnetic signature of oceanic circulation in Ganymede's subsurface ocean using kinematic induction modeling. Our approach couples zonal jet flows from rotating thermal convection simulations with magnetic field models incorporating Ganymede's internal dynamo and external contributions from Jupiter.
Simon Cabanes, Thomas Gastine, Alexandre Fournier   +2 more
wiley   +1 more source

Magnetic effects on fields morphologies and reversals in geodynamo simulations

, 2020
International audienceThe dynamo eect is the most popular candidate to explain the non-primordial magnetic elds of astrophysical objects. Although many systematic studies of parameters have already been made to determine the dierent dynamical regimes ...
Petitdemange, Ludovic, Menu, Mélissa, D, Galtier, Sebastien   +2 more
core   +1 more source

Scaling of Latitude‐Dependent Heat Transport in Geostrophic Convection

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Latitudinal variations in heat transport shape the thermal and magnetic evolution of rapidly rotating planets, stars, and icy moons. Although global simulations have revealed strong equatorial–polar contrasts, a predictive scaling theory has been lacking.
Veeraraghavan Kannan, Varghese Mathai, Xiaojue Zhu   +2 more
wiley   +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

Decadal Stability of Multi‐Scale Core‐Mantle Boundary in Core‐Reflections of Repeating Earthquakes

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Temporal changes near the core‐mantle boundary (CMB) would trigger insights into ongoing thermal and chemical interactions between the Earth's core and mantle. Here, we search for multidecadal temporal changes in the CMB topography and heterogeneity using waveform similarity analysis of core‐reflected phases (PcP, ScP, and ScS) from global ...
Tianyu Cui, Wei Wang, John E. Vidale, Hao Zhang, Hao Luo, Yinshuang Ai   +5 more
wiley   +1 more source

Preface to the Special Issue of Initial Scientific Results of MSS-1

Earth and Planetary Physics
The scientific research of geomagnetism has been largely driven by new geomagnetic data that are available to scientists. Macau Science Satellite-1 (MSS-1) was successfully launched on 21st May 2023 into a near-circular orbit of altitude of about 450 km ...
Keke Zhang, PengFei Liu, YongXin Pan
doaj   +1 more source

PSVM: A Global Database for the Miocene Indicating Elevated Paleosecular Variation Relative to the Last 10 Myrs

Geochemistry, Geophysics, Geosystems, 2022
Statistical studies of paleosecular variation (PSV) are used to infer the structure and behavior of the geomagnetic field. This study presents a new database, paleosecular variation of the Miocene (PSVM), of high‐quality directional data from the Miocene
Y. A. Engbers, R. K. Bono, A. J. Biggin
doaj   +1 more source