Results 71 to 80 of about 348 (165)

Equatorial Plasma Bubble Occurrence Under Propagation of MSTID and MLT Gravity Waves

Journal of Geophysical Research: Space Physics, 2020
AbstractWe observed a signature of equatorial plasma bubbles (EPBs) followed by a medium‐scale traveling ionospheric disturbance (MSTID) crossing the solar terminator over the geomagnetic equator during the period of post‐sunset rise (PSSR) of the F layer.
H. Takahashi, C. M. Wrasse, C. A. O. B. Figueiredo, D. Barros, I. Paulino, P. Essien, M. A. Abdu, Y. Otsuka, K. Shiokawa   +8 more
openaire   +2 more sources

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

Generation of Quasi‐Periodic Dayside Medium Scale Traveling Ionospheric Disturbances (MSTIDs) by Intermittent Lobe Reconnection

Geophysical Research Letters
The medium‐scale traveling ionospheric disturbances (MSTIDs) can be excited by many sources. Among those magnetic reconnection has been proposed as a potential driver for dayside MSTIDs, but direct evidence has been limited. Using ground‐based radar data
Yating Xiong, Huixin Liu, Run Shi, Zanyang Xing, Sheng Lu, Qiang Zhang, Zhiwei Wang, Desheng Han   +7 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

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

Observations and numerical simulations of electrified, medium-scale traveling ionospheric disturbances (MSTIDs) in the nighttime, mid-latitude ionosphere [PDF]

, 2014
This work will present an advancement of the physical understanding of medium-scale traveling ionospheric disturbances (MSTIDs). This will be accomplished primarily through an observational study and with the aid of numerical simulations.
Duly, Timothy
core  

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

First simultaneous observations of daytime MSTIDs over North America using GPS-TEC and DEMETER satellite data

, 2009
International audienceWe present simultaneous observations of daytime medium-scale traveling ionospheric disturbances (MSTIDs) over North America, using measurements of the Total Electron Content (TEC) by the US GPS network and ionospheric plasma data ...
Lebreton, Jean-Pierre, Otsuka, Yuichi, Onishi, Tatsuo, Berthelier, Jean-Jacques, Tsugawa, Takuya   +4 more
core   +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