NWC Transmitter Effects on the Nightside Upper Ionosphere Observed by a Low-Altitude Satellite
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423296" target="_blank" >RIV/00216208:11320/20:10423296 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=HZLYwQcRPa" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=HZLYwQcRPa</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2020JA028660" target="_blank" >10.1029/2020JA028660</a>
Alternative languages
Result language
angličtina
Original language name
NWC Transmitter Effects on the Nightside Upper Ionosphere Observed by a Low-Altitude Satellite
Original language description
NWC is an extremely powerful very low frequency (19.8 kHz) transmitter located in the north-west Australia. Although the transmitter typically operates continuously, it was off during the second half of 2007. This allows for a direct comparison of an ionospheric situation at the times when the transmitter is on with the times when the transmitter is off. We use electromagnetic wave and plasma measurements performed by the Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions spacecraft at an altitude of about 660 km. Given that the transmitter signal is significantly attenuated in lower ionospheric layers during the daytime and, moreover, the dayside ionosphere is controlled primarily by the solar radiation, concealing possible transmitter-related effects, we focus exclusively on the nightside. We show that although the NWC transmitter signal does not significantly change the mean plasma density and only slightly increases the electron temperature, it causes significant perturbations of both these quantities at distances up to about 200 km. The wave intensity is considerably enhanced in the same spatial region close to the transmitter in a large range of frequencies above about 14 kHz. Finally, clear signatures of transmitter induced electron precipitation are detected to the east of the transmitter at somewhat larger L- shells, consistent with a gyroresonance condition.
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/GA18-00844S" target="_blank" >GA18-00844S: Quasiperiodic modulation of magnetospheric plasma waves</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Geophysical Research. Space Physics
ISSN
2169-9380
e-ISSN
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Volume of the periodical
125
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
e2020JA028660
UT code for WoS article
000603639900004
EID of the result in the Scopus database
2-s2.0-85098060325