Results 51 to 60 of about 14,504 (230)

Relative Contributions of Lower‐Atmosphere Tidal and Solar‐Magnetospheric Forcings to the Day‐to‐Day Variability of F‐Region Electron Density

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We use Thermosphere Ionosphere Electrodynamics General Circulation Model simulations nudged to realistic tides and their statistical day‐to‐day variabilities (DTDVs), derived from Michelson Interferometer for Global High‐Resolution Thermospheric Imaging/Ionospheric Connection Explorer observations, to estimate the relative importance of tidal ...
Xian Lu, Jens Oberheide, Deepali Aggarwal   +2 more
wiley   +1 more source

Insights into Conjugate Hemispheric Ionospheric Disturbances Associated with the Beirut Port Explosion on 4 August 2020 Using Multi Low-Earth-Orbit Satellites

Remote Sensing
In this study, we analysed remote sensing data collected during the Beirut port explosion on 4 August 2020 at 15.08 UT. For this purpose, we selected three Low-Earth-Orbit (LEO) satellite missions that passed near the Beirut port explosion site ...
Adel Fathy, Yuichi Otsuka, Essam Ghamry, Dedalo Marchetti, Rezy Pradipta, Ahmed I. Saad Farid, Mohamed Freeshah   +6 more
doaj   +1 more source

Wavelet analysis of the LF radio signals collected by the European VLF/LF network from July 2009 to April 2011 [PDF]

, 2012
In 2008, a radio receiver that works in very low frequency (VLF; 20-60 kHz) and LF (150-300 kHz) bands was developed by an Italian factory. The receiver can monitor 10 frequencies distributed in these bands, with the measurement for each of them of the ...
Arabelos, D.N., Bezzeghoud, M., Biagi, F., Buyuksarac, A., Contadakis, M.E., Ermini, A., Ligonzo, T., Maggipinto, T., Moldovan, A.S., Moldovan, I.A., Righetti, F., Schiavulli, L., Silva, H.G., Xenos, T.   +13 more
core   +2 more sources

Detection of Equatorial Plasma Bubbles Using the COSMIC‐2 Rate of TEC Index

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Equatorial plasma bubbles (EPBs) are large‐scale plasma depletion structures that can disrupt Global Navigation Satellite Systems (GNSS) and other space‐based technologies. Several instruments have been employed to study EPB dynamics, with Total Electron Content (TEC) and Rate of TEC change Index (ROTI) data standing out as valuable parameters
Ana L. Christovam, Fabricio S. Prol, Marcio T. A. H. Muella   +2 more
wiley   +1 more source

Effect of Field Line Torsion on the Polarization of ULF Waves

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract In this paper we suggest a simple modification of the dipole magnetic field which introduces field‐aligned currents and torsion to the field lines. The resulting field lines are not contained in the meridional planes and have resemblance to the geomagnetic field lines in the dawn and dusk flanks of the magnetosphere. We analyze polarization of
K. Kabin, A. W. Degeling, R. Rankin
wiley   +1 more source

Ionospheric disturbances in Japan detected by ALOS-2 subband azimuth offset

Earth, Planets and Space
Global Navigation Satellite Systems (GNSS) and synthetic aperture radar (SAR) are valuable tools for observing ionospheric disturbances. While GNSS provides continuous temporal data with limited spatial resolution, SAR offers high-resolution spatial ...
Yu Morishita, Ryu Sugimoto, Toru Kouyama, Chiaki Tsutsumi   +3 more
doaj   +1 more source

Insights into the nature of northwest-to-southeast aligned ionospheric wavefronts from contemporaneous Very Large Array and ionosondes observations

, 2012
The results of contemporaneous summer nighttime observations of midlatitude medium scale traveling ionospheric disturbances (MSTIDs) with the Very Large Array (VLA) in New Mexico and nearby ionosondes in Texas and Colorado are presented.
Cohen, Cosgrove, Cosgrove, Cotton, Emmert, Helmboldt, Helmboldt, Hernández-Pajares, J. F. Helmboldt, Kassim, Kelley, Ogawa, Park, Perkins, Shiokawa, Shiokawa, Tsugawa, Tsunoda, Yokoyama   +18 more
core   +1 more source

The Extreme GIC Occurrence During 11 years of Observations in the North‐West of Russia

Space Weather, Volume 24, Issue 5, May 2026.
Abstract For the first time, events with extreme magnitudes of geomagnetically induced currents (GICs) in the power lines during the quasi‐solar cycle (2012–2022) at auroral and subauroral latitudes are analyzed. GIC recordings from auroral Vykhodnoy (Murmansk region) and subauroral Kondopoga (Karelia) sub‐stations together with data from near‐by ...
V. B. Belakhovsky, V. A. Pilipenko, V. N. Selivanov, Ya. A. Sakharov, J. J. Zhang, V. V. Kolobov   +5 more
wiley   +1 more source

Ionospheric Rayleigh Wave Disturbances Following the 2018 Alaska Earthquake from GPS Observations

Remote Sensing, 2019
Big earthquakes often excite the acoustic resonance between the earth’s surface and the lower atmosphere. The perturbations can propagate upward into the ionosphere and trigger ionospheric anomalies detected by dual-frequency GPS observations, but ...
Yuhan Liu, Shuanggen Jin
doaj   +1 more source

Inhomogeneous structure of the high-latitude ionosphere as observed at Norilsk [PDF]

, 2001
In March and August/September 1995, February 1996, and in March-April 1998, observations of the inhomogeneous structure of the high-latitude ionosphere were carried out at Norilsk (geomagnetic latitude and longitude are 64.2 N and 160.4 E, and L=5.2 ...
Lipko, Yu. V.
core   +4 more sources