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travelling ionospheric disturbance [1 record]
Record 1 - internal organization data 2004-10-12
Record 1, English
Record 1, Subject field(s)
- Atmospheric Physics
Record 1, Main entry term, English
- travelling ionospheric disturbance
1, record 1, English, travelling%20ionospheric%20disturbance
correct
Record 1, Abbreviations, English
- TID 2, record 1, English, TID
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
High-altitude atmospheric wave produced by auroral heating and propagated from high latitudes towards the equator. 3, record 1, English, - travelling%20ionospheric%20disturbance
Record number: 1, Textual support number: 1 CONT
Travelling ionospheric disturbances ... are probably a cause of focusing and defocusing of radio waves. The disturbance usually appears at higher frequencies, gradually affecting lower frequencies. Some are associated with magnetic storms and originate in the auroral zone. These may travel great distances. Others appear to be more localised, originating in the troposphere in local weather. 4, record 1, English, - travelling%20ionospheric%20disturbance
Record number: 1, Textual support number: 2 CONT
Travelling Ionospheric Disturbance (TID) is a ripple or wave in the electron density structure that propagates horizontally which affects the refraction of radiowaves and so degrades directional finders. There are two main types: .large-scale TID with 1000 km or more between wave crests usually moving from pole to equator and generated by auroral activity; .medium-scale TID with hundreds of km wavelengths thought to be generated by thunderstorm activity. 5, record 1, English, - travelling%20ionospheric%20disturbance
Record 1, Key term(s)
- traveling ionospheric disturbance
Record 1, French
Record 1, Domaine(s)
- Physique de l'atmosphère
Record 1, Main entry term, French
- perturbation ionosphérique migratoire
1, record 1, French, perturbation%20ionosph%C3%A9rique%20migratoire
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- perturbation ionosphérique itinérante 2, record 1, French, perturbation%20ionosph%C3%A9rique%20itin%C3%A9rante
feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Onde atmosphérique de haute altitude produite par un réchauffement auroral et qui se propage des latitudes élevées vers l'équateur. 3, record 1, French, - perturbation%20ionosph%C3%A9rique%20migratoire
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Física de la atmósfera
Record 1, Main entry term, Spanish
- perturbación móvil en la ionosfera
1, record 1, Spanish, perturbaci%C3%B3n%20m%C3%B3vil%20en%20la%20ionosfera
feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Onda atmosférica a niveles altos que se propaga desde las latitudes altas hacia el Ecuador, originada por el calentamiento producido por las auroras. 1, record 1, Spanish, - perturbaci%C3%B3n%20m%C3%B3vil%20en%20la%20ionosfera
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