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secular variation [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1999-12-06

English

Subject field(s)
  • Atmospheric Physics
  • Aircraft Piloting and Navigation
  • Space Physics
DEF

In general, a slow trend, the actual time scale implied being different for different contexts.

DEF

secular trend: In statistics, a persistent tendency for a variate to increase or decrease with the passage of time, apart from irregular variations of shorter period. A secular trend is generally revealed more clearly if the data are smoothed.

OBS

secular variations: term standardized by ISO.

Key term(s)
  • secular variation

French

Domaine(s)
  • Physique de l'atmosphère
  • Pilotage et navigation aérienne
  • Physique spatiale
OBS

variations séculaires : terme normalisé par l'ISO.

Key term(s)
  • variation séculaire

Spanish

Save record 1

Record 2 1992-05-15

English

Subject field(s)
  • Geophysics
  • Magnetism
  • Astrophysics and Cosmography
DEF

The changes, measured in hundred of years, in the magnetic field of the earth.

CONT

Changes in the earth's field which are progressive for decades or centuries are known as secular variations.

French

Domaine(s)
  • Géophysique
  • Magnétisme
  • Astrophysique et cosmographie
DEF

Variations dont les périodes embrassent plusieurs siècles et sont, de ce fait, représentées sur un court intervalle de temps par une fonction constamment croissante ou décroissante.

OBS

Variations de la direction du champ. - La variation lente des valeurs moyennes des éléments magnétiques n'est connue [...] que pour un intervalle de quelques siècles. Son ampleur pendant cette courte durée est très grande par rapport à celle des autres variations qu'on a pu constater dans les propriétés générales du globe.

Spanish

Save record 2

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TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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