Propagation of Gravity waves in the ionosphere from multi-point Doppler sounding

0426474 - ÚFA 2014 RIV MX eng O - Others
Chum, Jaroslav - Burešová, Dalia - Laštovička, Jan - Šindelářová, Tereza - Baše, Jiří - Hruška, František - McKinnell, L. A. - Cabrera, M. A.
Propagation of Gravity waves in the ionosphere from multi-point Doppler sounding.
2013
R&D Projects: GA MŠMT 7AMB12AR018
Institutional support: RVO:68378289
Keywords : gravity waves * ionosphere * wave propagation * remote sensing
Subject RIV: DG - Athmosphere Sciences, Meteorology
https://www.iaga2013.org.mx/public/1/merida-yucatan-mexico.jsf

Multi-point observations by Doppler sounding system makes it possible to investigate propagation of Gravity Waves (GWs) in the ionosphere. The system operating at two different frequencies (~3.59 MHz and ~4.27 MHz) is located in the Central Europe, Czech Republic. Similar multi-point system operating at only one frequency was also installed in Western Cape in South Africa (f~3.59 MHz) and in Northern Argentina, in the vicinity of Tucuman (f~4.63 MHz). Simultaneous measurements of near-by ionosondes are used to estimate reflection heights of the transmitted frequency . The largest fluctuations of Doppler shift (wave activity) are observed when the sounding radio waves reflect at altitudes from ~150 to ~250 km (sometimes up to 300 km), i.e. mainly in the F layer.
Permanent Link: http://hdl.handle.net/11104/0232193