Results 51 to 60 of about 130 (107)

Estimating Electron Temperature and Density Using Van Allen Probe Data: Typical Behavior of Energetic Electrons in the Inner Magnetosphere

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, C. E. J. Watt, C. Forsyth, A. W. Smith, C. J. Lao, S. Chakraborty, J. C. Holmes, G. L. Delzanno   +7 more
wiley   +1 more source

Hilbert-Huang Transform Analysis of Intradecadal Variations in the Length of Earth's Day

Edinburgh Student Journal of Science
Intradecadal periods in the length of Earth's day (∆LOD) reveal angular momentum exchanges as a result of processes in the Earth's core. The properties of two previously identified intradecadal oscillations in the ∆LOD signal with periods of ...
Isobel Howard, Imogen Buckroyd, Alexandra Mohn, Frederik Dahl Madsen   +3 more
doaj   +1 more source

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, C. Forsyth, M. P. Freeman, J. W. Gjerloev   +3 more
wiley   +1 more source

Heterogeneous Driver‐Aware Vehicle Trajectory Reconstruction and Fusion for Multiple Long‐Range Traffic Detectors

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, Yu‐Tao Liu, Er‐Long Tan, Li‐Yong Zheng, Run‐Min Wang   +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, Ulrich Brose, Myriam R. Hirt, Remo Ryser, Violette Silve, Georg Albert, Russell Arnott, Emilio Berti, Alyssa Cirtwill, Alexander Dyer, Benoit Gauzens, Anhubav Gupta, Hsi‐Cheng Ho, Sébastien M. J. Portalier, Danielle Wain, Kate Wootton   +15 more
wiley   +1 more source

Main Oscillatory Polar Motion of the Earth and Its Excitation: Investigation in Both the Frequency and Time Domains

Journal of Astronomy and Space Sciences
Two main components of polar motion are Chandler wobble and annual wobble. Annual wobble is obviously caused by the seasonal perturbations on the Earth – such was suspected as well as readily confirmed in unison.
Sung-Ho Na, Yu Yi
doaj   +1 more source

Space Weather Forecasts of Ground Level Space Weather in the UK: Evaluating Performance and Limitations

Space Weather, Volume 22, Issue 11, November 2024.
Abstract Geomagnetically Induced Currents (GICs) are a severe space weather hazard, driven through coupling between the solar wind and magnetosphere. GICs are rarely measured directly, instead the ground magnetic field variability is often used as a proxy.
A. W. Smith, I. J. Rae, C. Forsyth, J. C. Coxon, M.‐T. Walach, C. J. Lao, D. S. Bloomfield, S. A. Reddy, M. K. Coughlan, A. Keesee, S. Bentley   +10 more
wiley   +1 more source

Obtaining High‐Resolution Magnetic Records From Speleothems Using Magnetic Microscopy

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 10, October 2024.
Abstract Speleothems are mineral deposits capable of recording detrital and/or chemical remanent magnetization at annual timescales. They can offer high‐resolution paleomagnetic records of short‐term variations in Earth's magnetic field, crucial for understanding the evolution of the dynamo.
Cauê S. Borlina, Eduardo A. Lima, Joshua M. Feinberg, Plinio Jaqueto, Ioan Lascu, Ricardo I. F. Trindade, Eric Font, Elisa M. Sánchez‐Moreno, Luca Antonio Dimuccio, Yusuke Yokoyama, Josep M. Parés, Benjamin P. Weiss, Jeffrey A. Dorale   +12 more
wiley   +1 more source

Geomagnetic jerks [PDF]

, 2007
Macmillan, Susan, British Geological Survey   +1 more
openaire   +3 more sources

MECHANISM OF GEOMAGNETIC JERKS

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017
Mechanism of geomagnetic jerks evident from the model of the hot Earth magnetic field is discussed here. Similar in their principle, reversals, excursions and jerks result from auto adjusting of temperature of the phase change (PC) “evaporation-condensation” at the F-layer of the Earth inner core border.
openaire   +1 more source