TERMIUM Plus®

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

FREE AIR ANOMALY [1 record]

Record 1 2002-01-08

English

Subject field(s)
  • Gravity (Physics)
  • Geophysics
DEF

The difference at any point on the earth between the measured gravity and the gravity calculated for the theoretical gravity at sea level and a free-air coefficient determined only by the elevation of the station with respect to sea level.

French

Domaine(s)
  • Pesanteur (Physique)
  • Géophysique
DEF

En géodésie, différence entre la correction à l'air libre et l'anomalie calculée.

OBS

L'attraction de la pesanteur change si la distance [...] du point de mesure au centre de la terre varie, elle décroît avec la hauteur du point de mesure par rapport à la surface terrestre. Si la station de mesure A et la station de base B ont une différence de niveau [...], il y aura une variation de g entre les deux stations même si leur distance de séparation N-S est zéro.

Spanish

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