HR: 1400h
AN: SA33B-04    [Abstracts]
TI: Wavelet-based Analysis of Sporadic E Layer Variability in Midlatidutes
AU: * Šauli, P
EM: PKN@UFA.CAS.CZ
AF: Institute of Atmospheric Physics ASCR, Boční II/1401, Prague 4, 14131, Czech Republic
AU: Bourdillon, A
EM: alain.bourdillon@univ-rennes1.fr
AF: IETR - Université de Rennes1, Bāt 11D, Campus de Beaulieu, Rennes Cedex, 35042, France
AU: Kouba, D
EM: kouba@ufa.cas.cz
AF: Institute of Atmospheric Physics ASCR, Boční II/1401, Prague 4, 14131, Czech Republic
AU: Boška, J
EM: boska@ufa.cas.cz
AF: Institute of Atmospheric Physics ASCR, Boční II/1401, Prague 4, 14131, Czech Republic
AB: We apply wavelet analysis to time series describing state of ionosphere at heights of E region. Our study focuses mainly on occurrence of sporadic E layer and corresponding changes in plasma motion as measured by digisonde DPS4. This analysis involves vertical ionospheric sounding measurements recorded during period of low solar activity during summer time. Two high sampling rate campaigns were performed in Pruhonice Observatory (50N, 14.6E). Using DPS 4 equipment two types of the data, ionograms and plasma drift, were recorded and further analysed. Our data sets consist of time series of critical frequencies foEs, corresponding maxima hEs and particle drifts at two frequencies in the height range 90 km - 150 km. Dominant oscillation modes, their persistence and prevailing plasma motion are discussed.
DE: 2437 Ionospheric dynamics
DE: 2439 Ionospheric irregularities
DE: 2443 Midlatitude ionosphere
DE: 2463 Plasma convection (2760)
DE: 2487 Wave propagation (0689, 3285, 4275, 4455, 6934)
SC: SPA-Aeronomy [SA]
MN: 2007 Joint Assembly