Czech-lead international network of ionospheric Doppler shift measurements and results towards gravity and infrasonic waves

0445403 - ÚFA 2016 CZ eng A - Abstrakt
Laštovička, Jan - Chum, Jaroslav - Burešová, Dalia - Baše, Jiří - Hruška, František - Šindelářová, Tereza
Czech-lead international network of ionospheric Doppler shift measurements and results towards gravity and infrasonic waves.
26th IUGG General Assembly 2015. Earth and Environmental Sciences for Future Generations : abstracts. Prague: International Union of Geodesy and Geophysics, 2015. A12p-152.
[Earth and Environmental Sciences for Future Generations. General Assembly of International Union of Geodesy and Geophysics /26./. 22.06.2015-02.07.2015, Prague]
Institucionální podpora: RVO:68378289
Klíčová slova: gravity waves * infrasonic waves * ionosphere
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie
http://www.iugg2015prague.com/abstractcd/data/HtmlApp/main.html#0

In the last couple of years we developed, constructed and installed several ionospheric Doppler shift measuring systems. They are devoted to studies of short-period gravity waves and long-period infrasound in the ionosphere. The system in the Czech Republic covers western part of the country and consists of five 3.59 MHz, and three 4.65 and 7.04 MHz transmitters and three central receivers in Prague. Transmitting frequencies of individual transmitters are shifted by 4 Hz in order to avoid overlap. A system, which consists of three radio paths with central receiver in Hermanus (3.59 MHz), was installed in the southernmost South Africa in 2010. Another three-path system was installed in Tucuman (4.65 MHz) in the northwestern Argentina in 2012. The newest system consisting of three transmitters and two well-spaced receivers was installed in the northern half of Taiwan (6.57 MHz) in October 2013. Examples of results, which illustrate mainly penetration of short-period gravity and long-period infrasonic waves from the lower atmosphere into the ionosphere, will be presented.
Trvalý link: http://hdl.handle.net/11104/0248273