Results 21 to 30 of about 458,084 (142)

Identification of potential precursors for the occurrence of Large-Scale Traveling Ionospheric Disturbances in a case study during September 2017 [PDF]

Journal of Space Weather and Space Climate, 2020
Traveling Ionospheric Disturbances (TIDs) reflect changes in the ionospheric electron density which are caused by atmospheric gravity waves. These changes in the electron density impact the functionality of different applications such as precise ...
Ferreira Arthur Amaral, Borries Claudia, Xiong Chao, Borges Renato Alves, Mielich Jens, Kouba Daniel   +5 more
doaj   +2 more sources

Global Observational Comparison of Large‐Scale Traveling Atmospheric and Ionospheric Disturbances During the May 2024 Geomagnetic Storm

Geophysical Research Letters
During the geomagnetic storm on 10 May 2024, neutral density measurements from 14 Tianmu, Swarm, and GRACE‐FO satellites at ∼510 km altitude, combined with total electron content (TEC) observations, enabled the first global observational comparison of ...
Xiaolong Wei, Guoying Jiang, Yajun Zhu, Yongping Li, Jiangzhao Ai, Tingwei Han, Huijun Le, Aibin Zhang, Jiyao Xu   +8 more
doaj   +2 more sources

A large-scale traveling ionospheric disturbance during the magnetic storm of 15 September 1999 [PDF]

, 2002
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/94957/1/jgra16176 ...
Shiokawa, K., Saito, A., Knipp, D. J., Igarashi, K., Yumoto, K., Otsuka, Y., Ridley, A.J., Ridley, A. J., Knipp, D.J., Ogawa, T., Balan, N., K. Shiokawa   +11 more
core   +5 more sources

The Observation of Traveling Ionospheric Disturbances Using the Sanya Incoherent Scatter Radar

Remote Sensing
In this study, we used the Sanya Incoherent Scatter Radar (SYISR) to observe the altitude profiles of traveling ionospheric disturbances (TIDs) during a moderate magnetic storm from 13 to 15 March 2022. Three TIDs were recorded, including two large-scale
Xu Zhou, Ding Feng, Yihui Cai
exaly   +3 more sources

Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster [PDF]

Annales Geophysicae, 2023
Abstract. Atmospheric gravity waves and traveling ionospheric disturbances can be observed in the neutral atmosphere and the ionosphere at a wide range of spatial and temporal scales. Especially at medium scales, these oscillations are often not resolved in general circulation models and are parameterized.
F. Günzkofer, D. Pokhotelov, G. Stober, I. Mann, S. L. Vadas, E. Becker, A. Tjulin, A. Kozlovsky, M. Tsutsumi, M. Tsutsumi, N. Gulbrandsen, S. Nozawa, M. Lester, E. Belova, J. Kero, N. J. Mitchell, N. J. Mitchell, C. Borries   +17 more
openaire   +5 more sources

Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]

, 2006
International audienceObservations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
Tim K. Yeoman (7583066), A. Senior, M. J. Kosch (7595327), I. W. McCrea, M. T. Rietveld (7594184), Rietveld, M. T., Senior, A., T. K. Yeoman, I. W. McCrea (7594871), M. T. Rietveld, Kosch, M. J., M. J. Kosch, A. Senior (3255282), McCrea, I. W., Yeoman, T. K.   +14 more
core   +6 more sources

Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfvén waves coupling to the dayside magnetosphere [PDF]

Annales Geophysicae, 2022
During minor to moderate geomagnetic storms, caused by corotating interaction regions (CIRs) at the leading edge of high-speed streams (HSSs), solar wind Alfvén waves modulated the magnetic reconnection at the dayside magnetopause.
P. Prikryl, R. G. Gillies, D. R. Themens, D. R. Themens, J. M. Weygand, E. G. Thomas, S. Chakraborty   +6 more
doaj   +1 more source

Ionospheric Disturbances Observed Following the Ridgecrest Earthquake of 4 July 2019 in California, USA

Remote Sensing, 2022
Earthquakes are known to generate disturbances in the ionosphere. Such disturbances, referred to as co-seismic ionospheric disturbances, or ionoquakes, were previously reported for large earthquakes with magnitudes Mw≥ 6.6.
Saul A. Sanchez, Esfhan A. Kherani, Elvira Astafyeva, Eurico R. de Paula   +3 more
doaj   +1 more source

The synthesis of travelling ionospheric disturbance (TID) signatures in HF radar observations using ray tracing [PDF]

Annales Geophysicae, 2000
Abstract. Characteristic signatures are often observed in HF radar range-time-intensity plots when travelling ionospheric disturbances (TIDs) are present. These signatures, in particular the variation of the F-region skip distance, have been synthesised using a ray tracing model. The magnitude of the skip variation is found to be a function of the peak
A. J. Stocker, A. J. Stocker, N. F. Arnold, T. B. Jones   +3 more
openaire   +5 more sources

The Persistent Ionospheric Responses Over Japan After the Impact of the 2011 Tohoku Earthquake

Space Weather, 2020
In this study, we report the persistent impacts of the 2011 Tohoku earthquake/tsunami on the ionosphere using the ground‐based Global Navigation Satellite System and FORMOSAT‐3/COSMIC total electron content.
Min‐Yang Chou, Iurii Cherniak, Charles C.H. Lin, N.M. Pedatella   +3 more
doaj   +1 more source