Results 71 to 80 of about 265 (151)

Observation of daytime medium-scale traveling ionospheric disturbances using GNSS systems

Учёные записки Казанского университета: Серия Физико-математические науки, 2018
The paper considers the problems of detecting midlatitude MSTIDs with a low intensity of disturbance ∆N/N using the method of transionospheric sounding with GNSS signals.
R.O. Sherstyukov, A.D. Akchurin
doaj  

Simultaneous Observations of Quasi‐Orthogonal Nighttime MSTIDs at Conjugate African‐European Midlatitude Stations on 4 October 2018

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract Two quasi‐orthogonal nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) were observed by conjugate midlatitude all‐sky imagers in Sutherland (32.4° ${}^{\circ}$S, 20.8° ${}^{\circ}$E; magnetic latitude: ∼ ${\sim} $−40.9° ${}^{\circ}$) and Asiago (45.87° ${}^{\circ}$N, 11.53° ${}^{\circ}$E; magnetic latitude: ∼40.3° ${\sim} 40.3{
Zama T. Katamzi‐Joseph, Carlos Martinis, Jonathan J. Makela, Yuichi Otsuka, John Bosco Habarulema, Alicreance Hiyadutuje, Shai Toledano, Mark B. Moldwin, Jeffrey Baumgardner   +8 more
wiley   +1 more source

Climatology of Nighttime Medium‐Scale Traveling Ionospheric Disturbances at Mid and Low Latitudes Observed by the DEMETER Satellite in the Topside Ionosphere During the Period 2005–2010

, 2022
International audienceThermal ion measurements from the French Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions micro-satellite have been used to study the climatology of nighttime Medium-scale traveling ionospheric ...
M. Petitdidier, Nguyen, Chien-Thang, C. T. Nguyen, Huy, Minh Le, M. Le Huy, J.‐J. Berthelier, C. Amory‐Mazaudier, Amory-Mazaudier, Christine, Petitdidier, Monique, Berthelier, Jean-Jacques   +9 more
core   +1 more source

The Analysis of the Ionospheric Radio Occultation Data Coverage for ANCHOR Ionospheric Data Assimilation

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC‐1 and COSMIC‐2) missions provide global observations of atmospheric and ionospheric conditions using Global Navigation Satellite System (GNSS) radio occultation (RO).
Victoriya V. Forsythe, Jan‐Peter Weiss, Irfan Azeem, William Gullotta, Sarah E. McDonald, Katherine A. Zawdie, Emily C. Morgan, Douglas P. Drob   +7 more
wiley   +1 more source

Ionospheric Density Variations Observed by the Radio Receiver Instrument on e‐POP/Swarm‐E

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Ionospheric density variations can be inferred by studying the effects of electron density structures on transionospheric High Frequency (HF) radio wave propagation. The Radio Receiver Instrument (RRI) on the Enhanced Polar Outflow Probe (e‐POP)/Swarm‐E is used to detect HF radio waves during transionospheric experiments conducted between the ...
E. C. Kalafatoglu Eyiguler, D. W. Danskin, G. C. Hussey, R. G. Gillies, A. G. Burrell, A. J. Coster, K. Pandey, A. W. Yau   +7 more
wiley   +1 more source

Midnight Simultaneous Observations of Spread‐F and Multiple F‐Layer Stratifications During the 11–12 May 2024 Geomagnetic Superstorm

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract A geomagnetic superstorm occurred from May 10 to 12, 2024, producing significant spatial and temporal disturbances in the ionosphere. Ground‐based ionosonde and GPS‐TEC data enabled the identification, analysis, and possible interpretation of a unique event: the simultaneous occurrence of Spread‐F and multiple F‐layer stratifications during ...
P. R. Fagundes, V. G. Pillat, C. M. Anoruo, G. A. S. Picanço, M. Pezzopane, J. B. Habarulema, K. Venkatesh, A. Tardelli, A. L. Christovam, F. Vieira   +9 more
wiley   +1 more source

Seasonal dependence of MSTIDs obtained from 630.0 nm airglow imaging at Arecibo

Geophysical Research Letters, 2010
All‐sky imaging data of 630.0 nm airglow emissions are used to study the seasonal and solar activity dependence of medium‐scale traveling ionospheric disturbances (MSTIDs) over Arecibo, Puerto Rico (18.3° N, 66.7° W, 28° N mag lat). MSTIDs are typical F‐region signatures at midlatitudes, yet limited statistical results in the American sector hindered ...
C. Martinis, J. Baumgardner, J. Wroten, M. Mendillo   +3 more
openaire   +1 more source

Insights Into Seismic‐Induced Ionospheric Perturbation Following the 2025 Myanmar Earthquake

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract A major earthquake with a magnitude of MW = 7.7, followed by several aftershocks, occurred in Mandalay, Myanmar, on 28 March 2025. This study aims to report on the co‐seismic ionospheric disturbances caused by the event, based on a multi‐instrument approach that was adopted to examine co‐seismic effects.
Trisani Biswas, Mefe Moses, Haris Haralambous, Md. Golam Mostafa   +3 more
wiley   +1 more source

Characteristics of Nighttime Medium‐Scale Traveling Ionospheric Disturbances: Longitudinal Comparison of Their Seasonal and Local Time Variations

Space Weather
This study presents a statistical analysis of the occurrence rate of midlatitude nighttime medium scale traveling ionospheric disturbances (MSTIDs) that were detected in Swarm plasma density measurements from 2014 to 2023.
Zama T. Katamzi‐Joseph, John Bosco Habarulema, Yuichi Otsuka, Tshimangadzo M. Matamba, Amoré E. Nel   +4 more
doaj   +1 more source

Climatology of the spread F over Roquetes, Spain: Impact of the medium scale traveling ionospheric disturbances

Journal of Space Weather and Space Climate
Understanding the long-term variability of nighttime Spread F (SF) and its drivers is crucial for improving the knowledge of ionospheric disturbances, which impact radio communication, GNSS positioning, and space weather forecasting.
Paul Krishnendu Sekhar, Haralambous Haris, Altadill David, Segarra Antoni, Navas-Portella Víctor, de Paula Víctor   +5 more
doaj   +1 more source