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MICROSEISMIC NOISE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-04-02

English

Subject field(s)
  • Geophysics
  • Vulcanology and Seismology
  • Surveillance, Detection and Reconnaissance (Military)
CONT

The resolution of seismic signals with intermediate frequencies... is hindered by the presence in this range of a natural form of seismic background noise. The noise derives from a nearly continuous succession of small ground movements that are referred to as microseisms. Some microseismic noise is of local origin, related to such effects as vehicular traffic, rainfall, wind action on trees, etc. However, an important source is the action of storm waves at sea, which is detectable on seismic records far inland.

French

Domaine(s)
  • Géophysique
  • Volcanologie et sismologie
  • Surveillance, détection et reconnaissance (Militaire)
CONT

De nombreuses études permettent [...] d'attribuer le bruit microsismique à l'action des vagues océaniques sur les côtes (ressac) et à la pression des vagues stationnaires de l'océan (clapotis). Ce bruit, qui semble être plus élevé dans le Pacifique que dans l'Atlantique ou l'Arctique, est vraisemblement engendré par des effets météorologiques ou océaniques très éloignés [...]

Spanish

Save record 1

Record 2 2000-05-25

English

Subject field(s)
  • Vulcanology and Seismology
  • Surveillance, Detection and Reconnaissance (Military)
DEF

A network of seismographs arranged in a special pattern and connected to a central computer so as to enable the signal from earthquake and explosion ground motion to be processed and enhanced with respect to the noise of microseismic ground motion.

French

Domaine(s)
  • Volcanologie et sismologie
  • Surveillance, détection et reconnaissance (Militaire)
OBS

Posés à la surface du sol d'une station sismographique (Fascicule no 2, NY, 1990).

OBS

Reproduit du lexique «Disarmament and Peace Keeping/Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.

Key term(s)
  • nappe de séismographes
  • ensemble séismologique
  • ensemble de séismographes

Spanish

Save record 2

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