TERMIUM Plus®

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

M-DISCONTINUITY [1 record]

Record 1 2004-11-03

English

Subject field(s)
  • Vulcanology and Seismology
DEF

The boundary surface or sharp seismic-velocity discontinuity that separates the Earth's crust from the subjacent mantle ...

OBS

... the discontinuity should be defined by seismic velocities alone ...

OBS

Mohorovicic discontinuity; Moho; M discontinuity: term(s) extracted from the "Disarmament and Peace Keeping" glossary with the permission of the United Nations Office at Geneva.

French

Domaine(s)
  • Volcanologie et sismologie
DEF

Discontinuité définissant la transition entre la croûte et le manteau, où l'on observe une augmentation brutale des vitesses des ondes sismiques longitudinales qui passent de 6-7 km/s à 8 km/s environ.

CONT

[...] l'usage est de placer la limite supérieure du manteau et la base de l'écorce au niveau de la discontinuité de Mohorovicic, où la vitesse des ondes longitudinales subit une augmentation rapide [...]

OBS

discontinuité de Mohorovicic; Moho; discontinuité M :terme(s) tiré(s) du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.

Spanish

Campo(s) temático(s)
  • Vulcanología y sismología
DEF

Límite entre la corteza terrestre y el manto, a 30 km [de profundidad].

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