Investigation of ionospheric disturbances by continuous HF Doppler sounding

0521254 - ÚFA 2020 BE eng A - Abstrakt
Chum, Jaroslav - Laštovička, Jan - Rusz, Jan
Investigation of ionospheric disturbances by continuous HF Doppler sounding.
16th European Space Weather Week. Brussels: Solar-Terrestrial Centre of Excellence (STCE), 2019.
[European Space Weather Week /16./. 18.11.2019-22.11.2019, Liège]
Institucionální podpora: RVO:68378289
Klíčová slova: ionosphere * travelling ionospheric disturbances * Continuous Doppler sounding (CDS)
Obor OECD: Meteorology and atmospheric sciences
http://www.stce.be/esww2019/program/session_details.php?nr=6#

Continuous Doppler sounding (CDS) is a useful tool to investigate short-time fluctuations of plasma at specific heights in the ionosphere; its time resolution is about 10 s, which is much higher than the time resolution of ionospheric sounders that measure ionospheric profile. On the other hand, CDS cannot determine the height of observation. It is therefore useful to combine measurements by CDS and by a nearby ionospheric sounder that can be used to estimate the reflection height of the CDS. Examples of analysis and detection of various ionospheric disturbances such as medium scale travelling ionospheric disturbances caused by gravity waves or infrasound, sudden ionospheric disturbances caused by solar flares or movement of ionospheric plasma induced by electric fields associated with sudden storm commencements and geomagnetic activity will be presented.
Trvalý link: http://hdl.handle.net/11104/0305882