TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
LONG WAVE [2 records]
Record 1 - internal organization data 2012-09-21
Record 1, English
Record 1, Subject field(s)
- Remote Sensing
- Radio Waves
Record 1, Main entry term, English
- low frequency
1, record 1, English, low%20frequency
correct, United States, standardized, officially approved
Record 1, Abbreviations, English
- LF 1, record 1, English, LF
correct, United States, standardized, officially approved
Record 1, Synonyms, English
- kilometric wave 2, record 1, English, kilometric%20wave
correct
- long wave 3, record 1, English, long%20wave
correct, less frequent
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
In the communication spectrum of frequencies or wavelengths, that portion which lies between 30 and 300 kilohertz (kHz) or between 1 and 10 kilometres (km). 4, record 1, English, - low%20frequency
Record number: 1, Textual support number: 1 OBS
Designations are classed as follows - 1. ITU band designator and name: LF - low frequency; 3. Metric subdivision: kilometric waves. 4, record 1, English, - low%20frequency
Record number: 1, Textual support number: 2 OBS
Dictionaries vary in their definition of "long wave." For some, it is synonymous with "low frequency (LF)," for others, it refers to all wavelengths greater than 1000 metres, and finally one source claims that it refers to all frequencies below the standard broadcast band, e.g. 535 kHz. 4, record 1, English, - low%20frequency
Record number: 1, Textual support number: 3 OBS
kilometric wave: term usually used in the plural. 5, record 1, English, - low%20frequency
Record number: 1, Textual support number: 4 OBS
low frequency; LF: term and abbreviation standardized by the Glossary for Pilots and Air Traffic Services Personnel Committee and officially approved by the RADARSAT-2 Terminology Approval Group (RTAG). 6, record 1, English, - low%20frequency
Record 1, Key term(s)
- kilometric waves
- long waves
Record 1, French
Record 1, Domaine(s)
- Télédétection
- Ondes radioélectriques
Record 1, Main entry term, French
- onde kilométrique
1, record 1, French, onde%20kilom%C3%A9trique
correct, feminine noun, officially approved
Record 1, Abbreviations, French
- O.km 2, record 1, French, O%2Ekm
correct, feminine noun, officially approved
Record 1, Synonyms, French
- fréquence kilométrique 1, record 1, French, fr%C3%A9quence%20kilom%C3%A9trique
correct, feminine noun
- f.km 2, record 1, French, f%2Ekm
correct, feminine noun
- f.km 2, record 1, French, f%2Ekm
- bande kilométrique 1, record 1, French, bande%20kilom%C3%A9trique
correct, feminine noun
- B.km 2, record 1, French, B%2Ekm
correct, feminine noun
- B.km 2, record 1, French, B%2Ekm
- onde longue 1, record 1, French, onde%20longue
avoid, feminine noun
- grande onde 1, record 1, French, grande%20onde
avoid, feminine noun
- basse fréquence 3, record 1, French, basse%20fr%C3%A9quence
feminine noun, standardized
- BF 2, record 1, French, BF
avoid, feminine noun
- BF 2, record 1, French, BF
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dans le spectre des rayonnements radioélectriques, fréquence ou longueur d'onde qui occupe la bande située entre 30 et 300 kilohertz (kHz) ou entre 1 et 10 kilomètres. 4, record 1, French, - onde%20kilom%C3%A9trique
Record number: 1, Textual support number: 1 OBS
Les désignations, dans les divers systèmes de classement, sont les suivantes - 1) Désignation de l'UIT : 5; 2) Désignation américaine : LF; 3) Nomenclature adoptée pour la langue française - a) subdivision métrique : ondes kilométriques, b) abréviation métrique de la bande de fréquences : B.km; 4) Appellations et abréviation désuètes et déconseillées : ondes longues, grandes ondes, basses fréquences, BF. 4, record 1, French, - onde%20kilom%C3%A9trique
Record number: 1, Textual support number: 2 OBS
Dans certains milieux opérationnels, il faudra tolérer l'abréviation américaine «LF», mais «basses fréquences» et «BF» sont des expressions déconseillées car elles correspondent aux termes anglais «audio frequency (AF)» et «low frequency (LF)», c'est-à-dire deux notions différentes. 4, record 1, French, - onde%20kilom%C3%A9trique
Record number: 1, Textual support number: 3 OBS
onde kilométrique; onde longue; grande onde; basse fréquence : termes habituellement utilisés au pluriel. 5, record 1, French, - onde%20kilom%C3%A9trique
Record number: 1, Textual support number: 4 OBS
onde kilométrique; O.km : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR). 5, record 1, French, - onde%20kilom%C3%A9trique
Record number: 1, Textual support number: 5 OBS
basse fréquence; LF : terme et abréviation normalisés par le Comité sur le Glossaire à l'intention des pilotes et du personnel des services de la circulation aérienne. 6, record 1, French, - onde%20kilom%C3%A9trique
Record 1, Key term(s)
- ondes kilométriques
- ondes longues
- grandes ondes
- basses fréquences
- Bkm
- Okm
- fkm
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Teledetección
- Ondas radioeléctricas
Record 1, Main entry term, Spanish
- frecuencia baja
1, record 1, Spanish, frecuencia%20baja
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Radiofrecuencia comprendida entre los 30 y los 300 kilohertz. Corresponde a longitudes de onda entre 104 y 103 m. Se designa como LF. 1, record 1, Spanish, - frecuencia%20baja
Record 2 - internal organization data 2005-04-08
Record 2, English
Record 2, Subject field(s)
- Atmospheric Physics
- Climatology
Record 2, Main entry term, English
- long wave
1, record 2, English, long%20wave
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- Rossby wave 2, record 2, English, Rossby%20wave
correct
- planetary wave 3, record 2, English, planetary%20wave
correct
- major wave 4, record 2, English, major%20wave
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Wave in the atmospheric circulation, in one of the principal zones of the westerly winds, characterized by a great length and a significant amplitude. 5, record 2, English, - long%20wave
Record number: 2, Textual support number: 1 CONT
The jet streams, especially the polar front jet streams, are very dynamic features, which exhibit long wavelength meanders known as "long waves" or "planetary waves". These are also commonly known as "Rossby waves" ... Strictly speaking, Rossby waves are a particular kind of long wave, which migrates upstream relative to the fluid flow (i.e. from east to west in the case of the sub-tropical and polar jet streams). In fact, planetary waves may be stationary or migrate slowly eastward or westward. 6, record 2, English, - long%20wave
Record number: 2, Textual support number: 2 CONT
Long wave is a synoptic scale, natural wave pattern in the westerlies. They are also called "Rossby Waves" or "Planetary Waves". Long waves separate cold Polar air from warm air at the Equator and are caused by the shape and rotation of the Earth. ... The wavelength of long waves may vary from 60 to 180 degrees of longitude. ... There are usually three (3) to six (6) long waves in the westerlies in each hemisphere during any given season. ... The speed that long waves move at is generally very slow, 1-3 degrees longitude a day. 7, record 2, English, - long%20wave
Record number: 2, Textual support number: 3 CONT
Long wave [is] a large wave in the polar jet stream and the westerlies that extends from the middle to the upper troposphere. Often associated with the formation of a mid-latitude cyclone at the ground surface. ... Also called Rossby waves. 8, record 2, English, - long%20wave
Record number: 2, Textual support number: 1 OBS
The wave length is typically longer than that of the rapidly moving individual cyclonic and anticyclonic disturbances of the lower troposphere. The angular wavenumber of long waves is generally taken to be from 1 to 5. 9, record 2, English, - long%20wave
Record 2, French
Record 2, Domaine(s)
- Physique de l'atmosphère
- Climatologie
Record 2, Main entry term, French
- onde de Rossby
1, record 2, French, onde%20de%20Rossby
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- onde planétaire de Rossby 2, record 2, French, onde%20plan%C3%A9taire%20de%20Rossby
correct, feminine noun
- grande onde 3, record 2, French, grande%20onde
feminine noun
- onde majeure 3, record 2, French, onde%20majeure
feminine noun
- onde planétaire 3, record 2, French, onde%20plan%C3%A9taire
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Onde de la circulation atmosphérique dans une des zones principales de vent d'ouest, caractérisée par une grande longueur d'onde et une amplitude significative. 4, record 2, French, - onde%20de%20Rossby
Record number: 2, Textual support number: 1 CONT
[...] la circulation aux latitudes moyennes est caractérisée par des séquences transitoires creux-crête-creux-onde très importantes. C'est ce qu'on appelle les «ondes de Rossby», d'après Carl-Gustave Rossby, qui a élaboré sa théorie en 1937. Les ondes de Rossby sont principalement inclinées du nord-est au sud-ouest dans l'hémisphère Nord. [...] Les ondes planétaires sont les ondes de Rossby [...] Les crêtes ont tendance à se former au-dessus de grandes chaînes de montagne, comme les Rocheuses, et au-dessus de surfaces constamment chaudes. Les creux ont tendance à se former en aval des chaînes de montagne et au-dessus de surfaces froides. 5, record 2, French, - onde%20de%20Rossby
Record number: 2, Textual support number: 2 CONT
[...] des constituants majeurs, comme l'ozone, admettent leurs sources et leurs puits dans la moyenne atmosphère, alors que le transport et le mélange des masses d'air et des constituants chimiques y sont contrôlés par la propagation des ondes de grandes échelles, comme les ondes planétaires de Rossby, et par des ondes de petites échelles comme les ondes de gravité et la turbulence. 2, record 2, French, - onde%20de%20Rossby
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Física de la atmósfera
- Climatología
Record 2, Main entry term, Spanish
- onda larga
1, record 2, Spanish, onda%20larga
feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
- onda de Rossby 2, record 2, Spanish, onda%20de%20Rossby
feminine noun
- onda planetaria 1, record 2, Spanish, onda%20planetaria
feminine noun
- onda mayor 1, record 2, Spanish, onda%20mayor
feminine noun
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Onda en la circulación de la atmósfera en una de las zonas principales de los vientos del oeste, caracterizada por una gran longitud de onda y una amplitud notable. 1, record 2, Spanish, - onda%20larga
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