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MOMENT SISMIQUE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-10-24

English

Subject field(s)
  • System Names
  • Vulcanology and Seismology

French

Domaine(s)
  • Noms de systèmes
  • Volcanologie et sismologie
Key term(s)
  • Système d’évaluation en temps réel des risques de tsunamis par le moment sismique

Spanish

Campo(s) temático(s)
  • Nombres de sistemas
  • Vulcanología y sismología
Save record 1

Record 2 2010-12-22

English

Subject field(s)
  • Vulcanology and Seismology
DEF

A quantity used by earthquake seismologists to measure the amount of energy released by an earthquake.

OBS

Seismic moment is the basis of the moment magnitude scale introduced by Hiroo Kanamori, which is often used to compare the size of different earthquakes.

OBS

Symbol: MO

OBS

seismic moment: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Volcanologie et sismologie
DEF

Mesure de l'énergie d'un séisme.

OBS

Depuis les années soixante, les sismologues préfèrent cette mesure à la magnitude sismique car le moment sismique est directement lié aux paramètres de la source sismique.

OBS

Symbole : MO

OBS

moment sismique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 2

Record 3 1989-09-29

English

Subject field(s)
  • Geology
  • Vulcanology and Seismology
CONT

The first of these shocks took place in 1980 (...). It measured 7.3 on the moment-magnitude scale (a successor to the Richter scale, designated M), (...).

OBS

[The seismic moment is] a measure of the strength of an earthquake, particularly of the low-frequency wave motion. The seismic moment is equal to the product of the force and the moment arm of the double-couple system of forces that produces ground displacements equivalent to that produced by the actual earthquake dislocation.

French

Domaine(s)
  • Géologie
  • Volcanologie et sismologie
OBS

K. AKI (1980) considère que le moment sismique est peut-être le meilleur paramètre pour mesurer la grandeur d'un tremblement de terre provoqué par un glissement de faible.

OBS

L'échelle de moment sismique est logarithmique.

Spanish

Save record 3

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