Results 121 to 130 of about 5,130 (219)

Data selection techniques for non-comprehensive global geomagnetic field models [PDF]

, 2006
The geomagnetic field contains contributions from various time-varying, spatially complex, sources external to the solid Earth. Non-comprehensive geomagnetic field models may fail to reflect the characteristics of these sources and lead to inaccurate ...
Thomson, Alan, Lesur, Vincent
core  

Statistical Study on Pulsating Auroras and High‐Latitude Propagation of Chorus Waves Based on Conjugate Observations of Ground‐Based Imagers and Arase Satellite

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Pulsating aurora (PsA) is one of the common diffuse auroras typically generated by ∼10 keV electron precipitation. Precipitating electrons are scattered via wave‐particle interactions with whistler‐mode chorus waves in the magnetosphere. Previous studies have observationally demonstrated that, during PsAs, highly energetic electrons with ...
Y. Ito, Y. Ogawa, M. Fukizawa, Y. Tanaka, A. Kadokura, Y. Miyoshi, K. Hosokawa, A. Shinbori, T. Hori, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara   +16 more
wiley   +1 more source

The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica

, 2007
Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given ...
De Michelis, P., Tozzi, R., Meloni, A., Cafarella, L.   +3 more
core   +1 more source

A Statistical Study of Warm Plasma Cloak Particles Using Van Allen Probe Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The Warm Plasma Cloak (WPC) consists of ions in the inner magnetosphere with energies between 10 eV and 1 keV and showing a bidirectional pitch angle distribution of particles. These particles play an important role in wave–particle interactions and in controlling the dayside reconnection rate at the magnetopause.
Bhairavi Apte, Hyomin Kim, Konstantin Gamayunov   +2 more
wiley   +1 more source

Global Geomagnetic Field Models

Progress Code: completedStatement: Operators of the global network of geomagnetic observatories (including Geoscience Australia) The European Space Agency and the Danish Meteorological Institute as the operators of geomagnetic field satellites.

core  

Application of Deep Learning and Explainable AI to NIR Auroral Detection in Satellite Time‐Series Images

Space Weather, Volume 24, Issue 7, July 2026.
Abstract In this study, we employ a deep learning approach to detect auroras from near‐infrared (NIR) sequential images captured by the satellite‐based imager, the Enhanced Polar Outflow Probe (e‐POP)/Fast Auroral Imager (FAI). We also apply the Eigen‐Class Activation Map (Eigen‐CAM), an explainable AI technique in a broad sense, as a post‐hoc ...
Junmu Youn, Serin Jeon, Woong Jeon, Se‐Heon Jeong, Jeong‐Heon Kim, Woo Kyoung Lee, Yong‐Jae Moon, Geonhwa Jee   +7 more
wiley   +1 more source

Advancements in low Earth orbit satellite magnetic field measurements and global geomagnetic field modeling

地球与行星物理论评
Low Earth orbit (LEO) satellites have emerged as a primary tool for global geomagnetic field detection and model refinement, owing to their wide coverage, high resolution, and absence of geographical limitations.
Yanyan Yang, Jie Wang, Zhima Zeren, Xuhui Shen, Bin Zhou, Shigeng Yuan, Yuanqing Miao, Yue Xu   +7 more
doaj   +1 more source

Global Effect of Long‐Lasting 07–12 October 2024 Geomagnetic Storms During the Transition From a Strong (G3) to a Severe (G4) on the Geomagnetic Field and Ionospheric Parameters Distribution

Space Weather, Volume 24, Issue 7, July 2026.
Abstract This study investigates the co‐evolution of geomagnetic field disturbances with ionospheric parameters and their characteristic latitudinal signatures by conducting a location and time‐dependent analysis of the 07–12 October 2024 events, to fill crucial gaps in understanding the coupled response of the magnetosphere‐ionosphere system. This has
Yekoye Asmare Tariku
wiley   +1 more source

Magnetospheric Mapping with Quantitative Geomagnetic Field Models

, 1973
The Mead-Fairfield geomagnetic field models have been used to trace field lines between the outer magnetosphere and the earth\u27s surface. The results are presented in terms of ground latitude and local time contours projected to the equatorial plane ...
Mead, Gilbert D., Fairfield, Donald H., Mead, G. D., Fairfield, D. H.   +3 more
core  

Variability modes in core flows inverted from geomagnetic field models

, 2014
33 pagesInternational audienceThe flow of liquid metal inside the Earth's core produces the geomagnetic field and its time variations. Understanding the variability of those deep currents is crucial to improve the forecast of geomagnetic field variations,
Anna Morozova, Alexandra Pais, Nathanaël Schaeffer, Pais, M. A., Morozova, Anna, L., Schaeffer, Nathanaël, Pais, Alexandra   +6 more
core   +1 more source