Results 71 to 80 of about 336 (149)

Traveling ionospheric disturbances propagating ahead of the Tohoku-Oki tsunami: a case study,

, 2016
International audienceWe document two kinds of traveling ionospheric disturbances, namely, CTIDs (Co-tsunami-Traveling-Ionospheric-disturbances) and ATIDs (Ahead-of-Tsunami-Traveling-Ionospheric-disturbances) related to the Tohoku-Oki tsunami of 2011 ...
Klausner, V., Kherani, E. A., de Paula, E.R., Lognonne, Ph., Sladen, A., Rolland, L.   +5 more
core   +1 more source

Measurement of the Characteristics of TIDs Using Small and Regional Networks of GPS Receivers during the Campaign of 17–30 July of 2008

International Journal of Geophysics, 2012
This scientific report presents the results of a dedicated experiment that was conducted within the framework of the Low-latitude ionospheric Sensor Network (LISN) observatory to measure the characteristics of medium-scale (hundreds of km) Traveling ...
Cesar E. Valladares, Matthew A. Hei
doaj   +1 more source

Application of Singular Spectrum Analysis (SSA) for Delineating Geomagnetic and Lithospheric Signatures Associated With M7.6 Japan Earthquake

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract In this paper, Singular Spectral Analysis (SSA) is applied to the geomagnetic field to delineate signatures from different sources, such as geomagnetic variability and lithospheric processes. We performed SSA on the Y component of the Swarm satellite magnetic field By during the period from September 2023 to January 2024. Eigen values obtained
Amrita Yadav, Jayashree Bulusu, Essam Ghamry, Dedalo Marchetti, A. P. Dimri   +4 more
wiley   +1 more source

Traveling ionospheric disturbances and ionospheric perturbations associated with solar flares in September 2017 [PDF]

, 2019
Solar flares provide strong impulsive radiation and energy injection to the sunlit upper atmosphere. The impact on the ionosphere is immense in spatial scale, and therefore, it is not immediately evident if dramatically elevated neutral heating can lead ...
Erickson, Philip j., Zhang, Shun-Rong, Goncharenko, Larisa, Shun‐Rong Zhang, Larisa P. Goncharenko, Coster, Anthea, Rideout, William, Philip J. Erickson, Goncharenko, Larisa P., Coster, Anthea J., Anthea J. Coster, Zhang, Shun‐Rong, Vierinen, Juha, Juha Vierinen, William Rideout   +14 more
core   +1 more source

When Plasma Streams Tie up Equatorial Plasma Irregularities with Auroral Ones

Space Weather, 2020
We present a new pattern of storm‐induced ionospheric irregularities behavior at midlatitudes—poleward‐streaming plasma density depletions. Under disturbed conditions, they appear at North America low latitudes as a part of extended postsunset equatorial
Irina Zakharenkova, Iurii Cherniak
doaj   +1 more source

Global GNSS Observation of Mesoscale Ionospheric Irregularities (2006–2024)

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Mesoscale ionospheric irregularities are statistically investigated using an unprecedented 19‐year long‐term global GNSS (Global Navigation Satellite System) TEC (total electron content) data set. These irregularities are represented by ionospheric fluctuations within a 5°× ${}^{\circ}\times $ 3.75° ${}^{\circ}$ (latitude by longitude) region ...
Shun‐Rong Zhang, Jing Liu, Anthea J. Coster, Sevag Derghazarian, Philip J. Erickson, Larisa P. Goncharenko, Nestor Aponte, William Rideout   +7 more
wiley   +1 more source

Ionosphere‐Thermosphere Coupling in the Northern Polar Region During the May 2024 Geomagnetic Superstorm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The May 2024 superstorm, as the most intense geomagnetic storm since 2003, caused a variety of disturbances in the magnetosphere‐ionosphere‐thermosphere system. This study investigates the long‐lasting electron density depletion in the polar region and the underlying ionosphere‐thermosphere coupling, based on a comprehensive set of ...
Lei Cai, Anita Aikio, G. P. Geethakumari, Heikki Vanhamäki, I. I. Virtanen, Shin‐ichiro Oyama, Yongliang Zhang, Jiaojiao Zhang, Marc Hairston   +8 more
wiley   +1 more source

Poleward Disturbances in Thermospheric Winds During the 3–4 November 2021 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract This study focuses on ionosphere‐thermosphere coupling over North America during the 3–4 November 2021 strong geomagnetic storm (Kp 8−). We comprehensively analyze storm‐time ionospheric and thermospheric disturbances using data from ground‐based instruments at Poker Flat, Millstone Hill, and Urbana, as well as satellite observations and model
Jonna Wehmeyer, Yoshihiro Tomikawa, Takanori Nishiyama, Yasunobu Ogawa, Eframir Franco‐Diaz   +4 more
wiley   +1 more source

Properties of traveling ionospheric disturbances (TIDs) over the Western Cape, South Africa

, 2015
Travelling Ionospheric Disturbances (TIDs) are said to be produced by atmospheric gravitational waves propagating through the neutral ionosphere. These are smaller in amplitude and period when compared to most ionospheric disturbances and hence more ...
Tyalimpi, Vumile Mike
core  

Merging of Storm Time Midlatitude Traveling Ionospheric Disturbances and Equatorial Plasma Bubbles [PDF]

, 2019
Postsunset midlatitude traveling ionospheric disturbances (TIDs) and equatorial plasma bubbles (EPBs) were simultaneously observed over American sector during the geomagnetic storm on 8 September 2017.
Erickson, Philip J., Ren, Jiaen, Ridley, Aaron, Shunrong Zhang, Philip J. Erickson, Coster, Anthea J., Anthea J. Coster, Jiaen Ren, Aaron Ridley, Liu, Siqing, Zhang, Shunrong, Aa, Ercha, Shasha Zou, Siqing Liu, Ercha Aa, Zou, Shasha   +15 more
core   +1 more source