Computer Science – Sound
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsa33b..04s&link_type=abstract
American Geophysical Union, Spring Meeting 2007, abstract #SA33B-04
Computer Science
Sound
2437 Ionospheric Dynamics, 2439 Ionospheric Irregularities, 2443 Midlatitude Ionosphere, 2463 Plasma Convection (2760), 2487 Wave Propagation (0689, 3285, 4275, 4455, 6934)
Scientific paper
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.
Boška J.
Bourdillon Alain
Kouba D.
Šauli P.
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