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Ionospheric Vertical Drifts Obtained by Digisonde DPS4D and other Different Techniques
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SYSNO ASEP 0477985 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Ionospheric Vertical Drifts Obtained by Digisonde DPS4D and other Different Techniques Tvůrce(i) Kouba, Daniel (UFA-U) RID, ORCID
Boška, Josef (UFA-U) RID, ORCIDCelkový počet autorů 2 Zdroj.dok. Papers from URSI: XXXIInd General Assembly and Scientific Symposium (URSI GASS). - Ghent : URSI, 2017
G36-2, G23P-6Poč.str. 1 s. Forma vydání Nosič - C Akce URSI General Assembly and Scientific Symposium (URSI GASS) 2017 /32./ Datum konání 19.08.2017 - 26.08.2017 Místo konání Montreal Země CA - Kanada Typ akce WRD Jazyk dok. eng - angličtina Země vyd. BE - Belgie Klíč. slova Pruhonice ionospheric observatory ; ionospheric E layer ; ionospheric F layer ; ionospheric drifts measurement Vědní obor RIV DG - Vědy o atmosféře, meteorologie Institucionální podpora UFA-U - RVO:68378289 Anotace Since 2004 the ionospheric observatory in Pruhonice (Czech Republic, 50N, 14.9E) provides regular ionospheric sounding using Digisonde DPS4D. Pruhonice ionospheric station also perform F region drift soundings in autodrift mode. Since 2005 E region drifts measurement, using fixed frequencies and F region soundings in autodrift mode with 15 minutes sampling for each region are measured routinely. The vertical velocity is thus estimated according to the change of characteristics scaled from the classical quarter-hour ionograms. In present paper the direct drift measurement is compared with technique based on measuring of the virtual height at fixed frequency from the F-layer trace on ionogram, technique based on variation of h’F and hmF.
Different methods of vertical drift velocity estimation give different results, probably for these main reasons: Single-point calculation (hmF2, h'F2) is often loaded with big error (uncertainty, misinterpretation). The classic time difference of 15 minutes between ionograms is probably too large for indirect methods. Much better agreement of results is for smaller steps (7.5 or 5 minutes).Distinctly different results can sometimes be calculated using integral methods (ionogram F-trace, electron density profile) for single measurement and different parts of profile/trace (height dependence?).The integration method (density profile, F-trace) are less prone to big errors than the one point methods (hmF2, h’F2).It is necessary to compare in details different methods for different latitudes, various cadence of ionograms and different daytime. It is also appropriate to explore statistical properties of the obtained results – despite significant differences of individual results, similar statistical properties occurred.Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2018
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