Results 61 to 70 of about 5,479 (219)

Vertical and Oblique Ionosphere Sounding During the 21 August 2017 Solar Eclipse

Geophysical Research Letters, 2018
On 21 August 2017, a total solar eclipse crossed North America. Two Vertical Incident Pulsed Ionospheric Radar ionosondes were operated, one deployed under totality at Lusk, Wyoming, and another south of totality, 313 km away from the geomagnetic ...
Terence Bullett, Justin Mabie
doaj   +1 more source

Solar Flare Effects Observed over Mexico during 30–31 March 2022

Remote Sensing, 2023
Manifestations of two solar flares of March 2022 were studied over Mexico. The flare effects in the lower ionosphere had a ~3 min delay from the X1.3-flare onset and ~5 min from the M9.6-flare onset. The maximal impact on the HF signal amplitude was ~(14–
Maria A. Sergeeva, Olga A. Maltseva, Artem M. Vesnin, Donat V. Blagoveshchensky, Victor J. Gatica-Acevedo, J. Americo Gonzalez-Esparza, Aleksandr G. Chernov, Isaac D. Orrala-Legorreta, Angela Melgarejo-Morales, Luis Xavier Gonzalez, Mario Rodriguez-Martinez, Ernesto Aguilar-Rodriguez, Ernesto Andrade-Mascote, Pablo Villanueva   +13 more
doaj   +1 more source

Imprint of the Quasi‐Biennial Oscillation on the Ionosphere and Thermosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) is a dominant mode of stratospheric variability and is known to modulate the variability of the ionosphere‐thermosphere (IT) system. However, the extent of its influence on the ionosphere‐thermosphere system remains uncertain due to weak signals and confounding with similar periodicities in solar flux.
D. Singh, L. P. Goncharenko, S. R. Zhang
wiley   +1 more source

ION-FAST as the NIRFI’s Ionospheric Diagnostic Platform

Atmosphere
In December 2021, we presented a prototype of a fast ionosonde for vertical sounding based on the usage of publicly available radio-electronic components. This approach led to a major reduction in the cost of the created device. We called our development
Sergey P. Moiseev, Alexei V. Shindin, Kseniya K. Grekhneva, Viktoriya A. Pavlova, Nikita S. Timukin   +4 more
doaj   +1 more source

Ionospheric Changes over the Western Pacific Ocean near and after the End of Annular Solar Eclipse on 21 June 2020

Remote Sensing, 2023
The center path of the 21 June 2020 solar eclipse, which passed through Guam (13.62°N, 144.86°E, 94.6% obscuration), United States, at the end of its journey, provides a peculiar opportunity to study the ionospheric changes as the moon shadow moves into ...
Jin Wang, Tao Yu, Yu Liang, Xiangxiang Yan, Chunliang Xia, Yifan Qi   +5 more
doaj   +1 more source

Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002 [PDF]

, 2009
Unlike the geomagnetic storms produced by coronal mass ejections (CMEs), the storms generated by corotating interaction regions (CIRs) are not manifested by dramatic enhancements of the ring current. The CIR-driven storms are however capable of producing
Borovsky, Borovsky, Bust, Bust, C. N. Mitchell, Crowley, D. Pokhotelov, Denton, Foster, Foster, Gonzalez, J. W. MacDougall, Jayachandran, Lunt, Lunt, M. H. Denton, MacDougall, Mannucci, Mannucci, Mitchell, P. T. Jayachandran, Pokhotelov, Richardson, Sojka, Spencer, Su, Thomsen, Tsurutani, Tsurutani, Tsurutani, Turner, Weimer, Yizengaw, Zhang   +33 more
core   +1 more source

Ionospheric Response to the 8 April 2024 Total Solar Eclipse: Plasma Depletion and Eclipse‐Driven MsTIDs

Space Weather, Volume 24, Issue 4, April 2026.
Abstract The total solar eclipse on 8 April 2024 provided a unique opportunity to investigate the three‐dimensional (3‐D) ionospheric response under enhanced solar activity over North America. In this study, we processed high‐density GNSS observations from ∼1,700 stations to derive vertical total electron content and applied a multi‐term sinusoidal ...
Wenbin Liang, Xiyan Sun, Yuanfa Ji, Xiaodong Ren   +3 more
wiley   +1 more source

Unraveling Super Equatorial Plasma Bubbles (EPBs) Evolution During the 23 April 2023 Storm: Multi‐Instrument Observations and GITM‐SAMI3 Simulation

Space Weather, Volume 24, Issue 4, April 2026.
Abstract Storm‐time equatorial plasma bubble (EPB) dynamics play a critical role in space weather impacts on communication and navigation systems, yet the mechanisms governing their formation and evolution under storm conditions remain poorly understood.
Shasha Zou, Yulu Peng, Mary Smirnova, Grace Kwon, Zihan Wang, Joseph Huba, Aaron Ridley   +6 more
wiley   +1 more source

Analysis of the Relation Between Solar Activity and Parameters of the Sporadic E Layer

Atmosphere
Based on the ionosonde data from stations at different latitudes in high- and low-solar-activity years, the effects of solar activity on the parameters of the Es layer and the foE amplitude spectrum are analyzed.
Yabin Zhang, Xiaobao Zheng, Zonghua Ding, Shuji Sun, Jian Wu, Longjiang Chen   +5 more
doaj   +1 more source

Thousand‐Kilometer‐Scale Wavelike Undulations in Ionospheric Plasma Bubble Lifetime and Development Over Wide Longitudes

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract The irregularities of ionospheric plasma bubbles (EPBs) sequentially generated over wide longitudes are expected to share similar lifetime under normal conditions. In this study, we report a special case where the EPB irregularity lifetime over wide longitudes showed a quasi‐wavelike undulation pattern with wavelength of ∼3,000 km, that is ...
Wenjie Sun, Yuichi Otsuka, Guozhu Li, Prayitno Abadi, Zequan Wang, Guofeng Dai, Lianhuan Hu, Biqiang Zhao, Jianfei Liu, Haiyong Xie, Xiukuan Zhao, Yi Li, Baiqi Ning, Atsuki Shinbori, Michi Nishioka, Septi Perwitasari   +15 more
wiley   +1 more source