TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MAGNETIC CONJUGATE [3 records]

Record 1 2004-11-09

English

Subject field(s)
  • Space Physics
CONT

The interplanetary magnetic field(IMF) is a part of the Sun's magnetic field that is carried into interplanetary space by the solar wind. The interplanetary mangetic field lines are said to be "frozen in" to the solar wind plasma. Because of the Sun's rotation, the IMF, like the solar wind, travels outward in a spiral pattern that is often compared to the pattern of water sprayed from a rotating lawn sprinkler. The IMF originates in regions on the Sun where the magnetic field is "open" that is, where field lines emerging from one region do not return to a conjugate region but extend virtually indefinitely into space. The direction(polarity, sense) of the field in the Sun's northern hemisphere is opposite to that of the field in the southern hemisphere.(The polarities reverse with each solar cycle).

French

Domaine(s)
  • Physique spatiale
CONT

Le champ magnétique interplanétaire [comporte un] champ magnétique faible remplissant l'espace interplanétaire, les lignes de ce champ magnétique sont habituellement reliées au Soleil. L'IMF est gardé hors de la majeur partie de la magnétosphère, mais l'interaction des deux jouent un rôle important dans l'écoulement de l'énergie du vent solaire vers l'environnement de la Terre.

Spanish

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Record 2 2002-11-13

English

Subject field(s)
  • Astrophysics and Cosmography
  • Electromagnetic Radiation
CONT

When these particles drift around the Earth, they do not remain on common field lines unless the geomagnetic field distribution is axially symmetric. This effect has been called "drift shell splitting"... A drift shell is uniquely determined by the coordinate pair(Bm, Lm) as a surface formed by segments of magnetic field lines between conjugate mirror points. Therefore, drift shells which are tangent to one another or cut one another at a given longitude or local time where they have a common segment of field line, generally are separate from one another at a different longitude or local time---in Roederer's terms these drift shells "split". But since these drift shells are different entities from the outset, there is no real need to infer a notion of splitting.

French

Domaine(s)
  • Astrophysique et cosmographie
  • Rayonnements électromagnétiques

Spanish

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Record 3 1991-11-18

English

Subject field(s)
  • Geophysics
CONT

Magnetic Conjugate.-A high-altitude detonation... generates beta particles, or free electrons, that spiral along the Earth's magnetic field lines. This creates an increase in the ionization of the D layer of the atmosphere not only at the local area, but also in the area known as the magnetic conjugate in the opposite hemisphere!

French

Domaine(s)
  • Géophysique
CONT

(...) le champ moyen à l'intérieur de la magnétosphère est donné avec une bonne approximation par le développement complet de Gauss, à partir duquel, par exemple, on définit des points "conjugués magnétiques" qui se trouvent aux extrémités d'une même ligne de force du champ moyen réel.

Spanish

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