TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
RADIO BLACKOUT [6 records]
Record 1 - internal organization data 2008-05-23
Record 1, English
Record 1, Subject field(s)
- Radio Waves
- Telecommunications
- Space Physics
Record 1, Main entry term, English
- polar cap absorption event
1, record 1, English, polar%20cap%20absorption%20event
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- PCA event 2, record 1, English, PCA%20event
correct
- polar cap event 3, record 1, English, polar%20cap%20event
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
polar cap absorption events: Episodes of intense absorption of HF and VHF radio waves over the polar caps caused by excess ionization resulting from an influx of solar energetic particles into the upper atmosphere. 2, record 1, English, - polar%20cap%20absorption%20event
Record number: 1, Textual support number: 1 CONT
A polar cap absorption event results from the ionisation of the D-layer of the polar ionosphere by high energy protons. A PCA causes a HF radio blackout for transpolar circuits and can last several days. PCAs are almost always preceded by a major solar flare with the time between the flare event and the onset of the PCA ranging from few minutes to several hours. 4, record 1, English, - polar%20cap%20absorption%20event
Record number: 1, Textual support number: 2 CONT
PCA events have a pronounced diurnal variation, being much more intense during daytime than at night, and typically last for two to three days. 2, record 1, English, - polar%20cap%20absorption%20event
Record 1, French
Record 1, Domaine(s)
- Ondes radioélectriques
- Télécommunications
- Physique spatiale
Record 1, Main entry term, French
- événement d'absorption dans la calotte polaire
1, record 1, French, %C3%A9v%C3%A9nement%20d%27absorption%20dans%20la%20calotte%20polaire
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- évènement d'ACP 2, record 1, French, %C3%A9v%C3%A8nement%20d%27ACP
masculine noun
- phénomène d'absorption localisé à la calotte polaire 3, record 1, French, ph%C3%A9nom%C3%A8ne%20d%27absorption%20localis%C3%A9%20%C3%A0%20la%20calotte%20polaire
masculine noun
- phénomène d'absorption dans la calotte polaire 4, record 1, French, ph%C3%A9nom%C3%A8ne%20d%27absorption%20dans%20la%20calotte%20polaire
masculine noun
- évènement d'absorption dans la calotte polaire 5, record 1, French, %C3%A9v%C3%A8nement%20d%27absorption%20dans%20la%20calotte%20polaire
masculine noun
- événement d'ACP 5, record 1, French, %C3%A9v%C3%A9nement%20d%27ACP
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
[...] événements associés à des particules puissantes provenant du Soleil [lesquelles] produisent une ionisation intense dans la région D (between 50 and 90 km altitude) de l'ionosphère au-dessus des calottes polaires. 1, record 1, French, - %C3%A9v%C3%A9nement%20d%27absorption%20dans%20la%20calotte%20polaire
Record number: 1, Textual support number: 1 CONT
[Les] événements d'absorption dans la calotte polaire [sont appelés ainsi] parce que l'ionisation accrue [dans la région D] absorbe les ondes radio HF et VHF. Les événements d'absorption dans la calotte polaire peuvent être étudiés à l'aide de riomètres. 1, record 1, French, - %C3%A9v%C3%A9nement%20d%27absorption%20dans%20la%20calotte%20polaire
Record number: 1, Textual support number: 2 CONT
Il est souvent impossible d'établir des radiocommunications à haute fréquence pendant la durée des évènements d'ACP. 2, record 1, French, - %C3%A9v%C3%A9nement%20d%27absorption%20dans%20la%20calotte%20polaire
Record number: 1, Textual support number: 1 OBS
évènement : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004). 5, record 1, French, - %C3%A9v%C3%A9nement%20d%27absorption%20dans%20la%20calotte%20polaire
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Ondas radioeléctricas
- Telecomunicaciones
- Física espacial
Record 1, Main entry term, Spanish
- efecto de absorción en el casquete polar
1, record 1, Spanish, efecto%20de%20absorci%C3%B3n%20en%20el%20casquete%20polar
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2003-11-26
Record 2, English
Record 2, Subject field(s)
- Radio Transmission and Reception
Record 2, Main entry term, English
- blackout
1, record 2, English, blackout
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- radio blackout 1, record 2, English, radio%20blackout
correct
Record 2, Key term(s)
- radio black-out
- black-out
- radio black out
- black out
Record 2, French
Record 2, Domaine(s)
- Émission et réception radio
Record 2, Main entry term, French
- interruption totale des radiocommunications
1, record 2, French, interruption%20totale%20des%20radiocommunications
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- interruption des radiocommunications 1, record 2, French, interruption%20des%20radiocommunications
correct, feminine noun
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1995-11-21
Record 3, English
Record 3, Subject field(s)
- Geophysics
- Atmospheric Physics
- Radio Waves
Record 3, Main entry term, English
- auroral absorption
1, record 3, English, auroral%20absorption
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The absorption of radio waves during auroral events leading to the complete absence of ionospheric echoes(the characteristic blackout). 1, record 3, English, - auroral%20absorption
Record 3, French
Record 3, Domaine(s)
- Géophysique
- Physique de l'atmosphère
- Ondes radioélectriques
Record 3, Main entry term, French
- absorption aurorale
1, record 3, French, absorption%20aurorale
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Absorption des ondes radioélectriques durant l'aurore conduisant à une absence complète d'échos ionosphériques (extinction caractéristique). 1, record 3, French, - absorption%20aurorale
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Geofísica
- Física de la atmósfera
- Ondas radioeléctricas
Record 3, Main entry term, Spanish
- absorción auroral
1, record 3, Spanish, absorci%C3%B3n%20auroral
correct, feminine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Absorción de las ondas radioeléctricas durante fenómenos aurorales que conduce a la ausencia total de ecos ionosféricos (extinción o "blackout" típico). 1, record 3, Spanish, - absorci%C3%B3n%20auroral
Record 4 - internal organization data 1992-12-31
Record 4, English
Record 4, Subject field(s)
- Telecommunications
- Weather Stations and Meteorological Instruments and Equipment
Record 4, Main entry term, English
- polar blackout
1, record 4, English, polar%20blackout
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- polar radio blackout 2, record 4, English, polar%20radio%20blackout
correct
- arctic blackout 3, record 4, English, arctic%20blackout
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
Failure of radio communication caused by polar cap absorption. 4, record 4, English, - polar%20blackout
Record number: 4, Textual support number: 1 CONT
An arctic blackout may last for days during periods of intense auroral activity. 3, record 4, English, - polar%20blackout
Record number: 4, Textual support number: 1 OBS
The K-Index is useful in determining the state of the geomagnetic field, the quality of radio signal propagation and the condition of the ionosphere.... K-index values of 7 represent Severe Storm conditions and are often accompanied by "radio blackout" conditions(particularly over higher latitudes). 5, record 4, English, - polar%20blackout
Record number: 4, Textual support number: 2 OBS
polar cap absorption: Effect on radio waves in high latitudes, caused by a sudden increase in the electron concentration in the D layer of the ionosphere. 4, record 4, English, - polar%20blackout
Record number: 4, Textual support number: 3 OBS
radio blackout : Also called arctic blackout, blackout, polar blackout. 3, record 4, English, - polar%20blackout
Record 4, Key term(s)
- polar black-out
- polar black out
- arctic black-out
- arctic black out
- polar radio black-out
- polar radio black out
- arctic radio blackout
- arctic radio black-out
- arctic radio black out
- radio black out
- radio black-out
- radio blackout
Record 4, French
Record 4, Domaine(s)
- Télécommunications
- Stations, instruments et équipements météorologiques
Record 4, Main entry term, French
- extinction polaire
1, record 4, French, extinction%20polaire
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- extinction arctique 2, record 4, French, extinction%20arctique
feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Défaillance des communications radioélectriques causée par l'absorption au-dessus de la calotte polaire. 1, record 4, French, - extinction%20polaire
Record number: 4, Textual support number: 1 OBS
absorption au-dessus de la calotte polaire : Effet sur les ondes radioélectriques aux hautes latitudes, causé par l'augmentation soudaine de la concentration électronique dans la couche D de l'ionosphère. 1, record 4, French, - extinction%20polaire
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Telecomunicaciones
- Estaciones, instrumentos y equipos meteorológicos
Record 4, Main entry term, Spanish
- extinción polar
1, record 4, Spanish, extinci%C3%B3n%20polar
feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Fallo de las comunicaciones por radio debido a la absorción en el casquete polar. 1, record 4, Spanish, - extinci%C3%B3n%20polar
Record number: 4, Textual support number: 1 OBS
absorción en el casquete polar: Efecto en las altas latitudes sobre las ondas radioeléctricas, ocasionado por un aumento repentino de la concentración de electrones en la capa D de la ionosfera. 1, record 4, Spanish, - extinci%C3%B3n%20polar
Record 5 - internal organization data 1986-06-02
Record 5, English
Record 5, Subject field(s)
- CBRNE Weapons
- Wireless Telegraphy
- Radiotelephony
Record 5, Main entry term, English
- nuclear radio blackout
1, record 5, English, nuclear%20radio%20blackout
correct, officially approved
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
The disruption of the ionosphere's or atmosphere's capability to sustain radio wave propagation subsequent to the explosion of a nuclear weapon. Nuclear blackout effects are not permanent. 1, record 5, English, - nuclear%20radio%20blackout
Record number: 5, Textual support number: 1 OBS
Term and definition officialized by the Army Doctrine and Tactics Board. 2, record 5, English, - nuclear%20radio%20blackout
Record 5, French
Record 5, Domaine(s)
- Armes CBRNE
- Radiotélégraphie
- Radiotéléphonie
Record 5, Main entry term, French
- interruption radio nucléaire
1, record 5, French, interruption%20radio%20nucl%C3%A9aire
correct, feminine noun, officially approved
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Perturbation de forte intensité de l'ionosphère et de l'atmosphère à la suite d'une explosion nucléaire, qui a pour effet de bloquer la propagation des ondes radioélectriques. Ce phénomène n'est pas permanent. 1, record 5, French, - interruption%20radio%20nucl%C3%A9aire
Record number: 5, Textual support number: 1 OBS
Terme et définition uniformisés par le Sous-comité de terminologie française du Conseil de doctrine et de tactique de l'Armée de terre. 2, record 5, French, - interruption%20radio%20nucl%C3%A9aire
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1975-03-11
Record 6, English
Record 6, Subject field(s)
- Aerodynamics and Theory of Gases
Record 6, Main entry term, English
- plume
1, record 6, English, plume
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Radio blackout due to critical-frequency effects alone is possible only in those regions of the plume where the collision frequency is less than about 10 ’ex’8. 1, record 6, English, - plume
Record 6, French
Record 6, Domaine(s)
- Théorie des gaz et aérodynamique
Record 6, Main entry term, French
- traînée
1, record 6, French, tra%C3%AEn%C3%A9e
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
La coupure radioélectrique due aux seuls effets de fréquence critique n'est possible que dans les régions de la traînée où la fréquence des collisions est inférieure à 10 'ex'8. 1, record 6, French, - tra%C3%AEn%C3%A9e
Record 6, Spanish
Record 6, Textual support, Spanish
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