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ANALYSIS MAGNETIC ANOMALIES [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-02-02

English

Subject field(s)
  • Plate Tectonics
CONT

Plate motion analysis has been computed in a number of different ways, from magnetic anomalies..., seismology, hotspots..., and space geodesy data... Plate movements can be described both in absolute reference frames, e. g. the hotspot reference frame..., or relative reference frames, e. g., one plate relative to another... For sake of simplicity, the motion of a plate can be described, in an analytic way, as a rigid body rotation around an Euler pole over the Earth's surface.

OBS

plate-movement analysis: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Tectonique des plaques
OBS

[...] le mouvement des plaques, au lieu de dicter celui du manteau, semble en retard sur celui-ci. L'analyse de l'image tomographique conduit à deux autres découvertes. L'intensité de l'activité à la dorsale dépend de la distance entre la zone à faible vitesse du manteau et l'axe de la dorsale. [...] Enfin, à l'intérieur de la zone à faible vitesse, on observe des variations de l'intensité de cette anomalie, qui montrent que des secteurs, régulièrement espacés d'une quinzaine de kilomètres, contiennent plus de magma.

OBS

analyse du mouvement des plaques : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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Record 2 2007-09-17

English

Subject field(s)
  • Geological Research and Exploration
  • Magnetic and Electromagnetic Prospecting
  • Magnetism
CONT

Magnetic anomaly analysis is an effective tool for investigating the subsurface structure of this ophiolite belt because ophiolitic rocks carry strong magnetization in contrast to sedimentary layers.

OBS

magnetic-anomaly analysis: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Recherches et prospections géologiques
  • Prospection magnétique et électromagnétique
  • Magnétisme
OBS

analyse des anomalies magnétiques : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 2

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