Results 101 to 110 of about 71,920 (208)
Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract Equatorial electrojet (EEJ) and solar quiet (Sq) currents with one vortex each in either hemisphere are key components of the ionospheric dynamo currents, driving geomagnetic diurnal variations observed at Earth's surface. However, the physical coupling between EEJ and Sq westward currents on the polar side of the vortex focus remains poorly ...
Xiaocan Liu +3 more
wiley +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 3, 16 February 2026.Abstract In this study, we use the Specified Dynamics Whole Atmosphere Community Climate Model with thermosphere‐ionosphere eXtension (SD‐WACCM‐X) to investigate how the migrating solar semidiurnal tide (SW2) in the mesosphere and lower thermosphere (MLT) responds to the strength of Arctic and Antarctic Stratospheric Polar Vortices (SPVs).
Sunil Kumar, Jens Oberheide, Xian Lu
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Magnetic material in mean-field dynamos driven by small scale helical flows
New Journal of Physics, 2014 We perform kinematic simulations of dynamo action driven by a helical small scale flow of a conducting fluid in order to deduce mean-field properties of the combined induction action of small scale eddies.
A Giesecke, F Stefani, G Gerbeth
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Nonlinearity in Turbulent Diffusion as a Possible Cause of Stellar Flares
AstronomyExtremely powerful flares releasing energy well above 1032 erg are rare compared to the typical manifestations of solar activity, which are already being routinely monitored by the existing Space Weather network—with some level of predictability. However,
Elena Popova
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Influence of magnetic anisotropy on flux density changes in dynamo steel sheets
Archives of Electrical Engineering, 2015 Magnetic measurements, carried out by means of the Epstein frame, have shown that most typical dynamo steel sheets have certain anisotropic properties.
Mazgaj Witold +2 more
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ParticlesWe investigate the α and β effects in a rotating spherical plasma system relevant to astrophysical contexts. In particular, we focus on how kinetic and magnetic (current) helicities influence the magnetic diffusivity β.
Kiwan Park
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Magnetic Field Signatures of Craters on Mars
Geophysical Research LettersCraters on Mars are a window into Mars' past and the time they were emplaced. Because the crust is heated and shocked during impact, craters can demagnetize or magnetize the crust depending on the presence or absence of a dynamo field at the time of ...
A. Mittelholz +5 more
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Quantitative magnetohydrodynamic modelling of flux pumping in ASDEX Upgrade
Nuclear FusionThe sawtooth-free hybrid scenario has been achieved recently in ASDEX Upgrade (AUG) with applied non-inductive current sources and auxiliary heating (Burckhart et al 2023 Nucl. Fusion 63 126056).
Haowei Zhang +11 more
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Methodological Framework for Semiconductor Fab Design Using Dynamo-Based Generative Design
Applied SciencesThe rapid growth of the semiconductor industry has created a bottleneck in which traditional manual methods for designing fabrication plants (fabs) cannot keep pace with their high complexity and short technological lifecycles.
Yeongyu Hwang +4 more
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How to interpret near-infrared polarisation spectra of active M dwarfs?
Astronomy & AstrophysicsContext. Analyses of global magnetic fields in M dwarfs rely on many approximations regarding the derivation of average line profiles from spectropolarimetric data, interpreting them with analytical functions and modelling them using Zeeman Doppler ...
Kochukhov Oleg
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