Results 61 to 70 of about 737 (157)
Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.Abstract This comprehensive study focuses on interannual oscillations from 1 to 25 years in the F, E, and D region ionosphere. By leveraging longterm (1960–2018) continuous ground‐based ionosonde and phase height measurements in northern Germany, we have identified the peak periods and temporal variations of these oscillations using advanced analysis ...
Mani Sivakandan +5 more
wiley +1 more source
Annals of Geophysics, 2009 Earth is a complex dynamic system and study of the geomagnetic field can provide<br />insight to the dynamic processes operative in the outer core where the main field is<br />produced by a geo-dynamo mechanism.
Baldev Arora +2 more
doaj +1 more source
Geomagnetic jerks during the Swarm era and impact on IGRF-12 [PDF]
, 2018 Global geomagnetic field models can be used to study the dynamics of the core, aid satellite operation and make global digital navigation possible – from smartphones to guided drilling.
Brown, William, Macmillan, Susan
core
Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.Abstract The Earth's inner magnetosphere contains multiple electron populations influenced by different factors. The cold electrons of the plasmasphere, warm plasma that contributes to the ring current, and the relativistic plasma of the radiation belts often seem to behave independently.
D. Rasinskaite +7 more
wiley +1 more source
Prandtl-number dependence of convection-driven dynamos in rotating spherical fluid shells [PDF]
, 2005 The value of the Prandtl number P exerts a strong influence on convection-driven dynamos in rotating spherical shells filled with electrically conducting fluids.
Busse, F.H., Simitev, R.
core +3 more sources
Separating DP1 and DP2 Current Pattern Contributions to Substorm‐Like Intensifications in SML
Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.Abstract Substorms have been identified from negative bays in the AL/SML index, which traces the minimum northward ground magnetic deflection at auroral latitudes, produced by enhancements of the westward electrojet. For substorms, negative bays are caused by the closure of the Substorm Current Wedge through the ionosphere, typically localized to the ...
C. J. Lao +3 more
wiley +1 more source
IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.A trajectory reconstruction method based on long‐range traffic detectors is proposed, which combines Newell car‐following models, the whale optimisation algorithm and particle filters to achieve trajectory reconstruction and fusion. The experimental results show that the method can effectively improve the reconstruction accuracy.
Li Li +4 more
wiley +1 more source
The environment to the rescue: can physics help predict predator–prey interactions?
Biological Reviews, Volume 99, Issue 6, Page 1927-1947, December 2024.ABSTRACT Understanding the factors that determine the occurrence and strength of ecological interactions under specific abiotic and biotic conditions is fundamental since many aspects of ecological community stability and ecosystem functioning depend on patterns of interactions among species.
Mehdi Cherif +15 more
wiley +1 more source
Earth and Planetary PhysicsThe Low Earth Orbit (LEO) geomagnetic satellites provide a large number of high-precision measurements, which are crucial for researching the Secular Variation (SV) of the geomagnetic field.
Jiang Li, Bin Chen
doaj +1 more source
The dynamics and excitation of torsional waves in geodynamo simulations [PDF]
, 2013 The predominant force balance in rapidly rotating planetary cores is between Coriolis, pressure, buoyancy and Lorentz forces. This magnetostrophic balance leads to a Taylor state where the spatially averaged azimuthal Lorentz force is compelled to vanish
Jones, Chris A. +2 more
core +2 more sources