Generation of secondary waves due to intensive large-scale AGW traveling

Autor:	S. V. Voeykov, Edward L. Afraimovich, E. I. Astafyeva
Rok vydání:	2008
Předmět:	Geomagnetic storm Physics Atmospheric Science Total electron content TEC Aerospace Engineering Astronomy and Astrophysics Geodesy Atmospheric sciences Intensity (physics) Geophysics Earth's magnetic field Space and Planetary Science General Earth and Planetary Sciences
Zdroj:	Advances in Space Research. 41:1459-1462
ISSN:	0273-1177
DOI:	10.1016/j.asr.2007.03.059
Popis:	By using data from GPS receivers we detected huge-amplitude solitary large-scale traveling acoustic-gravity waves (LS AGW) which manifested themselves as perturbations of total electron content (TEC) of duration of about 40 min. Originated in the auroral area after significant alterations of geomagnetic field intensity during geomagnetic storms on 29–30 October 2003, LS disturbances propagated with a velocity about 1000–1200 m/s and caused generation of secondary small-scale (SS) waves with time period of 2–10 min. Such SS structure followed the solitary intensive AGW at a distance more than 4000 km. However, we observed such phenomenon only within the territory with high values of “vertical” TEC and steep gradients of TEC. Apparently, these conditions are necessary for generation of SS waves due to propagation of LS AGW.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::22dde95489e6b84f68df2cfd197e4591 https://doi.org/10.1016/j.asr.2007.03.059 Zobrazit plný text záznamu Full Text from ScienceDirect