Results 81 to 90 of about 4,233 (235)
Reversals in nature and the nature of reversals [PDF]
, 2007 The asymmetric shape of reversals of the Earth's magnetic field indicates a possible connection with relaxation oscillations as they were early discussed by van der Pol.
Aubert J +34 more
core +2 more sources
Pattern of Inner‐Core Differential Rotation From Long‐Term Earthquake Sequences and USArray Network
Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.Abstract How the differential rotation of the Earth's inner core (IC) has changed over time provides insights into the dynamics of the Earth's interior. Analyses of repeating earthquakes (doublets) have yielded different models. Here we present an event‐based investigation using individual events from long‐term earthquake sequences, which improves ...
Kaixin Wu, Xiaodong Song, Yi Yang
wiley +1 more source
Estimates of Quantities in a Hall Effect Geodynamo Theory
Advances in Electrical and Electronic Engineering, 2008 Currents, resistances, dynamo constant, Hall voltage coefficient and inductances are estimated for the author’s geodynamo theory incorporating the Hall Effect.
Annraoi M de Paor
doaj
Transport properties for liquid silicon-oxygen-iron mixtures at Earth's core conditions [PDF]
, 2012 We report on the thermal and electrical conductivities of two liquid silicon-oxygen-iron mixtures (Fe$_{0.82}$Si$_{0.10}$O$_{0.08}$ and Fe$_{0.79}$Si$_{0.08}$O$_{0.13}$), representative of the composition of the Earth's outer core at the relevant ...
Alfè, Dario +3 more
core +2 more sources
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.Abstract Bulk (whole sample) magnetic properties of three‐hundred‐sixty‐two samples from five North Atlantic Ocean sediment cores are compared to the magnetic properties of five grain‐size fractions separated from the same samples. The relative abundance and magnetic properties of the size fractions are highly variable both within a core and among ...
R. G. Hatfield +5 more
wiley +1 more source
Scaling laws in spherical shell dynamos with free-slip boundaries
, 2013 Numerical simulations of convection driven rotating spherical shell dynamos have often been performed with rigid boundary conditions, as is appropriate for the metallic cores of terrestrial planets.
Christensen, Ulrich R. +2 more
core +1 more source
Visualization of Geodynamo Simulations [PDF]
Proceedings of the XSEDE16 Conference on Diversity, Big Data, and Science at Scale, 2016 Earth's magnetic field undergoes striking variations in direction and strength on a vast spectrum of time scales. Complex motions of the liquid iron core maintain the magnetic field, but the inner workings of this so-called dynamo process are obscured from direct observation and pose significant challenges for theoretical and computational modeling ...
Amit Chourasia +6 more
openaire +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.Abstract Natural volcanic glasses are well represented in the geologic record, and typically contain near‐ideal single‐domain particles required for standard Thellier‐type absolute paleointensity experiments. Young (<∼50–100 ka) glasses have been demonstrated to reliably record Earth's magnetic field.
Julie A. Bowles +3 more
wiley +1 more source
Reversals in the six-jet Geodynamo model
E3S Web of Conferences, 2016 We describe a large-scale geodynamo model based on hypothesis about 6-cells convection in the Earth’s core. This hypothesis suggests indirect data of inhomogeneities in the density of the Earth?s core.
Vodinchar Gleb, Feshchenko Lyubov
doaj +1 more source
Brunhes Paleomagnetic Directions and Paleointensities From Northern Hainan Island
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.Abstract Paleomagnetic studies typically assume that the long‐term, time‐averaged geomagnetic field behaves as a geocentric axial dipole (GAD). While paleodirectional data over the past five million years generally agree with GAD predictions, mid‐to‐low latitude paleointensity records fail to show GAD, with high values from Hawaii.
Mengqing Wang +7 more
wiley +1 more source