Results 81 to 90 of about 826 (151)

Assessment of the Generation of Traveling Ionospheric Disturbances by Solar Terminators

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract The generation of traveling ionospheric disturbances (TIDs) near solar terminators has been predicted, and several studies have reported the detection of TIDs associated with sunrise. However, there are also observations that do not show TID signatures at sunrise.
Hyosub Kil, Andrew K. Sun, Se‐Heon Jeong, Woo Kyoung Lee, Jeong‐Heon Kim, Jiyun Lee   +5 more
wiley   +1 more source

Freshly Generated Super Sunrise Plasma Bubbles During the Geomagnetic Storm on November 5–6, 2023

Space Weather, Volume 24, Issue 1, January 2026.
Abstract During the geomagnetic storm on November 5–6, 2023, freshly generated super sunrise equatorial plasma bubbles (EPBs) and associated irregularities over the 80°–140°E sector were observed combining ground‐based and space observations from GNSS, ionosondes, HF Doppler records, and several satellite missions (COSMIC2, Swarm, and DMSP).
Ke Li, Donghe Zhang, Yaoyu Tian, Yi Zeng, Guanglin Yang, Xiukuan Zhao, Guozhu Li, Yongqiang Hao   +7 more
wiley   +1 more source

Longitudinal Differences Observed in the Ionospheric F-Region During the Major Geomagnetic Storm of March 31, 2001 [PDF]

, 2004
A new ionospheric sounding station using a Canadian Advanced Digital Ionosonde (CADI) was established for routine measurements by the “Universidade do Vale do Paraiba (UNIVAP)” at S˜ao Jos´e dos Campos (23.2_ S, 45.9_ W), Brazil, in August 2000.
Abalde, J. R., Becher, P. F., Crowley, G., Fagundes, P. R., Miró Amarante, Gloria, Sahai, Y.   +5 more
core  

Evidence and Causes of an Unusual Super Plasma Bubble Occurrence During Weak Geomagnetic Conditions Over Europe

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Using data from a cluster of ground‐based global navigation satellite system, we observed spatially extended enhanced ROTI over the European longitudes during a weak geomagnetic storm (Dst ≈ ${\approx} $ −50 nT) on 4 November 2023. The enhanced ROTI is extended over an extensive geographical latitudinal range of 46°N.
Chandan Kapil, Mani Sivakandan, Jorge Chau, Gopi K. Seemala, David Altadill   +4 more
wiley   +1 more source

Medium-scale traveling ionospheric disturbances observed with CHAMP [PDF]

, 2016
第3回極域科学シンポジウム/第36回極域宙空圏シンポジウム 11月26日（月）、27日（火） 国立極地研究所 ...
Hermann Lühr, Jaeheung Park, Lühr Hermann, Otsuka Yuichi, Park Jaeheung, Shiokwa Kazuo, Suzuki Shin, 塩川 和夫, 大塚 雄一, 鈴木 臣   +9 more
core   +1 more source

Simultaneous Observation of Equatorial Plasma Bubbles and Traveling Ionospheric Disturbances Over Indonesia Following the 15 January 2022 Tonga Volcano Eruption

Space Weather
We report our analysis of multi‐diagnostic ionospheric observations over Indonesia following the 15 January 2022 Tonga volcano eruption. Observation data from the Indonesian global navigation satellite system (GNSS) CORS network, ionosondes, and GNSS ...
Asnawi Husin, Varuliantor Dear, Agri Faturahman, Sefria Anggarani, Annis Siradj Mardiani, Adi Purwono, Jiyo Harjosuwito, Rezy Pradipta   +7 more
doaj   +1 more source

Travelling ionospheric disturbances over Kharkiv, Ukraine, accompanying the operation of EISCAT heater facility [PDF]

, 2014
We have detected the travelling ionospheric disturbances (TIDs) over Kharkiv with periods of 40–80 min occurring in the time range between 09:00 and 10:30 UT on November 22 and between 10:00 and 12:00 UT on November 23, 2012 during and after the ...
Domnin, I. F., La Hoz, C., Panasenko, S. V., Rietveld, M. T.   +3 more
core  

Tracking traveling ionospheric disturbances through Doppler-shifted AM radio transmissions [PDF]

Atmospheric Measurement Techniques
Six specialized radio receivers were developed to measure the Doppler shift of amplitude modulation (AM) broadcast radio carrier signals due to ionospheric effects.
C. C. Trop, C. C. Trop, J. LaBelle, P. J. Erickson, S.-R. Zhang, D. McGaw, T. Kovacs   +6 more
doaj   +1 more source

Measuring Power of Earth Disturbances Using Radio Wave Phase Imager. [PDF]

J Imaging, 2023
Sharif RNK, Herring RA.
europepmc   +1 more source

Traveling Ionospheric Disturbances in the Vicinity of Storm-Enhanced Density at Midlatitudes. [PDF]

J Geophys Res Space Phys, 2022
Zhang SR, Nishimura Y, Erickson PJ, Aa E, Kil H, Deng Y, Thomas EG, Rideout W, Coster AJ, Kerr R, Kerr R, Vierinen J.   +11 more
europepmc   +1 more source