Results 71 to 80 of about 14,504 (230)

Solar Wind‐Magnetosphere‐Ionosphere Coupling During the October 2024 Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Two geomagnetic storms occurred in October 2024 (Oct 6‐9 and 10–12), driven by the impact of a series of interplanetary coronal mass ejections on the magnetosphere. The first was a moderate storm, with peak Sym‐H near −150 nT, whereas the second was intense, Sym‐H reaching −340 nT.
S. E. Milan, M. K. Mooney, G. E. Bower, R. M. Hodnett, U. V. Amerstorfer, C. Möstl, A. Samsonov, B. J. Anderson, J. Gjerloev, S. K. Vines   +9 more
wiley   +1 more source

How the Ionosphere Responds Dynamically to Magnetospheric Forcing

Geophysical Research Letters
Ground magnetic field variations have been used to investigate ionospheric dynamics for more than a century. They are usually explained in terms of an electric circuit in the ionosphere driven by an electric field, but this is insufficient to explain how
K. M. Laundal, S. M. Hatch, J. P. Reistad, A. Ohma, P. Tenfjord, M. Madelaire   +5 more
doaj   +1 more source

Method and apparatus for calibrating the ionosphere and application to surveillance of geophysical events [PDF]

, 1984
The columnar electron content of the ionosphere between a spacecraft and a receiver is measured in realtime by cross correlating two coherently modulated signals transmitted at different frequencies (L1,L2) from the spacecraft to the receiver using a ...
Macdoran, P. F.
core   +1 more source

Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch, Sven Simon, Peter Kollmann, C. Michael Haynes   +3 more
wiley   +1 more source

A multi-instrumental study of ionospheric disturbances associated with the 2024 Mw 7.4 Hualien earthquake

Earth, Planets and Space
This study investigates the ionospheric disturbances triggered by the 2024 Mw 7.4 Hualien earthquake using a dense network of ground-based GNSS receivers and space-borne FORMOSAT-7/COSMIC-2 (F7/C2) radio occultation (RO) data.
Chia-Hung Chen, Yung-Ming Wang, I.-Te Lee   +2 more
doaj   +1 more source

A LOFAR observation of ionospheric scintillation from two simultaneous travelling ionospheric disturbances

Journal of Space Weather and Space Climate, 2020
This paper presents the results from one of the first observations of ionospheric scintillation taken using the Low-Frequency Array (LOFAR). The observation was of the strong natural radio source Cassiopeia A, taken overnight on 18–19 August 2013, and ...
Fallows Richard A., Forte Biagio, Astin Ivan, Allbrook Tom, Arnold Alex, Wood Alan, Dorrian Gareth, Mevius Maaijke, Rothkaehl Hanna, Matyjasiak Barbara, Krankowski Andrzej, Anderson James M., Asgekar Ashish, Avruch I. Max, Bentum Mark, Bisi Mario M., Butcher Harvey R., Ciardi Benedetta, Dabrowski Bartosz, Damstra Sieds, de Gasperin Francesco, Duscha Sven, Eislöffel Jochen, Franzen Thomas M.O., Garrett Michael A., Grießmeier Jean-Matthias, Gunst André W., Hoeft Matthias, Hörandel Jörg R., Iacobelli Marco, Intema Huib T., Koopmans Leon V.E., Maat Peter, Mann Gottfried, Nelles Anna, Paas Harm, Pandey Vishambhar N., Reich Wolfgang, Rowlinson Antonia, Ruiter Mark, Schwarz Dominik J., Serylak Maciej, Shulevski Aleksander, Smirnov Oleg M., Soida Marian, Steinmetz Matthias, Thoudam Satyendra, Toribio M. Carmen, van Ardenne Arnold, van Bemmel Ilse M., van der Wiel Matthijs H.D., van Haarlem Michiel P., Vermeulen René C., Vocks Christian, Wijers Ralph A.M.J., Wucknitz Olaf, Zarka Philippe, Zucca Pietro   +57 more
doaj   +1 more source

Magnetic Signatures of a Plasma Wake Behind the Swarm Satellites

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract This study provides first observational evidence of a plasma wake behind ESA's Swarm satellites, manifesting itself by a brief magnetic field strength spike and bipolar field variations in transverse direction. These magnetic signatures occur only near the dip‐equator where the magnetic declination is close to zero.
Chao Xiong, Xinyi Rang, Hermann Lühr, Fan Yin   +3 more
wiley   +1 more source

The Performance of DIXSG on Characterizing Global and Regional Ionospheric Disturbances Utilizing Geodetic Receiver Network‐A Case Study

Space Weather
As the 25th solar cycle enters a highly active phase, the resulting ionospheric irregularities induce disturbances in signals of Global Navigation Satellite System (GNSS), significantly disrupting its global stable positioning, navigation, and timing ...
Dongsheng Zhao, Xueli Zhang, Peicheng Zhang, Hao Liu, Kefei Zhang, Wang Li, Andong Hu, Longjiang Li, Shuanglei Cui, Yuhao Hou, Craig M. Hancock, Andrzej Krankowski   +11 more
doaj   +1 more source

Analysis of Ionospheric Disturbances in China During the December 2023 Geomagnetic Storm Using Multi-Instrument Data

Remote Sensing
This study investigates the ionospheric response over China during the geomagnetic storm that occurred on 1–2 December 2023. The data used include GPS measurements from the Crustal Movement Observation Network of China, BDS-GEO satellite data from IGS ...
Jun Tang, Sheng Wang, Jintao Wang, Mingxian Hu, Chaoqian Xu   +4 more
doaj   +1 more source

Electron production by solar Ly-{\alpha} line radiation in the ionospheric D-region

, 2014
The hydrogen Ly-{\alpha} line has a dominant influence in photo-ionization processes in the unperturbed terrestrial ionospheric D region. In this paper, we present a procedure of calculating the rate of photo-ionization induced by Ly-{\alpha} photons ...
Nina, Aleksandra, Čadež, Vladimir M.
core   +1 more source