Results 81 to 90 of about 40,340 (249)

An Ensemble Multivariate Multiscale Framework for Prediction of Long‐Term Solar Activity With Nonstationary Oscillations

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Solar activity is usually characterized by different indices from different perspectives, which are commonly interconnected and contain nonstationary oscillations (NSOs). Given the significant influence of solar activity on space weather, the Earth and humans, it is of great significance to predict solar activity for better understanding not ...
Shan Jiang, Zu‐Guo Yu, Vo Van Anh, Taesam Lee, Yu Zhou   +4 more
wiley   +1 more source

Ukrainian geomagnetic repeat station network and results of the field work reduced to the epoch 2005.5

Annals of Geophysics, 2013
The results of geomagnetic field components of the renewed Ukrainian repeat stations (RS) network are presented. The methods of absolute geomagnetic and astro-geodetic measurements are described.
Valentyn Maksymchuk, Myxailo Orlyuk, Viktor Tregybenko, Yurij Horodyskyy, Dmytro Marchenko   +4 more
doaj   +1 more source

The use of geomagnetic field models in magnetic surveys [PDF]

The importance of global geomagnetic field models for the reduction of magnetic surveys is discussed. It is demonstrated that a numerical model with adequate secular variation correction, provides a suitable representation of the regional field.
Gain, J. C., Regan, R. D.
core   +1 more source

Universal Time Influence on Stormtime Magnetosphere Ionosphere Coupling

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract The offset between Earth's magnetic and rotational axes introduces a diurnal dependence in the high‐latitude EUV exposure of the northern hemisphere (NH) and southern hemisphere (SH). This variation raises the question: Does the Universal Time (UT) of geomagnetic storm onset impact its geospace consequences?
Kalpesh Ghag, William Lotko, Kevin Pham, Dong Lin, Viacheslav Merkin, Anil Raghav, Michael Wiltberger   +6 more
wiley   +1 more source

A Variational Approach for Modeling the Inductive Response of Earth's Mantle to Time‐Varying External Geomagnetic Source

Earth and Space Science
A mathematical and numerical framework is developed for modeling Earth's magnetic field and optimizing the trajectory of the whole system using geomagnetic observations.
Kuan Li
doaj   +1 more source

A new high-resolution geomagnetic field model for southern Africa

South African Journal of Science
Earth’s magnetic field is a dynamic, changing phenomenon. The geomagnetic field consists of contributions from several sources, of which the main field originating in Earth’s core makes up the bulk.
Amore E. Nel, Achim Morschhauser, Foteini Vervelidou, Jürgen Matzka   +3 more
doaj   +1 more source

Statistical relationships between variations of the geomagnetic field, auroral electrojet, and geomagnetically induced currents

Solar-Terrestrial Physics, 2019
Using observations from the IMAGE magnetic observatories and the station for recording geomagnetically induced currents (GIC) in the electric transmission line in 2015, we examine relationships between geomagnetic field and GIC variations.
Vorobev A.V., Pilipenko V.A., Sakharov Ya.A., Selivanov V.N.   +3 more
doaj   +1 more source

Japanese MAGSAT team [PDF]

Construction of a model of the regional magnetic field and investigation of the local magnetic anomalies and their origin were approaches used in attempts to study the crustal structure near Japan and its Antarctic bases.
Fukushima, N., Kawamura, M., Kobayashi, K., Maeda, H., Miyazaki, Y., Ogawa, K., Oshima, S., Tanaka, M., Uyeda, S., Yukutake, T.   +9 more
core   +1 more source

Long Period Magnetotellurics (MT) using Geomagnetically Induced Currents in the Scottish Power Network [PDF]

, 2007
Geomagnetically Induced Currents (GIC) which flow in technological systems such as power transmission grids, are a consequence of the geoelectric field induced at the surface of the Earth during geomagnetic storms. We use an electrical model of the power
McKay, Allan, Pulkkinen, Antti, Thomson, Alan   +2 more
core  

A New Global Climatological Model of the Equatorial Ionospheric Vertical E × B Drift: Integrating Ground‐Based Magnetometer, Radar, and Satellite Data Sets

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract We present a new empirical vertical E×B $\mathbf{E}\times \mathbf{B}$ drift model developed using ground‐based magnetometer, radar, and satellite data over equatorial latitude regions. We first implement an algorithm relating magnetometer derived equatorial electrojet (EEJ) and vertical ion plasma drift (equivalent to vertical E×B $\mathbf{E ...
John Bosco Habarulema, Daniel Okoh, Endawoke Yizengaw, Valence Habyarimana, Michael Pezzopane, Paulo Roberto Fagundes, Zama Katamzi‐Joseph, Mark B. Moldwin, Claudio Cesaroni, Danny Scipion   +9 more
wiley   +1 more source