Statistical investigation of gravity wave characteristics in the ionosphere
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F21%3A00540569" target="_blank" >RIV/68378289:_____/21:00540569 - isvavai.cz</a>
Result on the web
<a href="https://earth-planets-space.springeropen.com/articles/10.1186/s40623-021-01379-3" target="_blank" >https://earth-planets-space.springeropen.com/articles/10.1186/s40623-021-01379-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1186/s40623-021-01379-3" target="_blank" >10.1186/s40623-021-01379-3</a>
Alternative languages
Result language
angličtina
Original language name
Statistical investigation of gravity wave characteristics in the ionosphere
Original language description
Propagation of medium-scale gravity waves (GWs) in the thermosphere/ionosphere is observed remotely, using multi-frequency and multi-point continuous Doppler sounding system located in the western part of Czechia. Reflection heights of the sounding radio waves are determined from a nearby ionosonde. Phase velocity vectors of GWs are calculated from time/phase delays between signals corresponding to different transmitter–receiver pairs that reflect in the ionosphere at different locations. As various frequencies reflect at different heights, reflection points of radio signals are separated both horizontally and vertically, and the investigation of GW propagation in the ionosphere is performed in three dimensions. Results obtained for two 1-year periods representing the solar maximum (July 2014–June 2015) and current solar minimum (September 2018–August 2019) are presented. It is shown that GWs in the ionosphere usually propagated with wave vectors directed obliquely downward. A statistical distribution of wave vector elevation angles is presented. A model of neutral winds is used to estimate the wave characteristics in the wind-rest frame. It is found that the distribution of elevation angles is narrower in the wind-rest frame than in the Earth frame. Seasonal and diurnal changes of propagation directions and attenuations of GWs are discussed. The wind-rest frame wavelengths of the analyzed GWs were usually from ~ 80 to 300 km, and the propagation velocities were mostly between ~ 100 and ~ 220 m/s.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/GA18-01969S" target="_blank" >GA18-01969S: Atmospheric waves: dynamics and vertical coupling</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Earth, Planets and Space
ISSN
1880-5981
e-ISSN
1880-5981
Volume of the periodical
73
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
16
Pages from-to
60
UT code for WoS article
000625387100001
EID of the result in the Scopus database
2-s2.0-85102078925