TERMIUM Plus®

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

DEPTH BELOW DATUM [2 records]

Record 1 2024-03-28

English

Subject field(s)
  • Hydrology and Hydrography
  • Cartography
  • River and Sea Navigation
DEF

... the plane of vertical reference to which all charted depths and drying heights are related.

OBS

In non-tidal waters, it's also the vertical datum for elevations and clearances. It's chosen to show the least depth of water found in any place under ’normal' meteorological conditions. It will be a plane so low that the water level will seldom fall below it.

OBS

chart datum: designation officially approved by the Naval Terminology Standardization Committee.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Cartographie
  • Navigation fluviale et maritime
DEF

Niveau de référence des profondeurs indiquées sur les cartes marines, qui est également celui des hauteurs de marée prédites dans les annuaires des marées.

OBS

Dans les eaux sans marées, le zéro des cartes correspond approximativement aux basses eaux normales en période d'étiage et en considérant la période de navigation.

OBS

zéro des cartes : désignation uniformisée par le Comité de normalisation de la terminologie navale.

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Cartografía
  • Navegación fluvial y marítima
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Record 2 2021-04-09

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Archaeology
DEF

A measurement below the datum on an archaeological site.

OBS

It is usually used to plot the vertical location of artifacts, features or soil layers in individual square units, then changed to a measurement above sea level for records.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Archéologie
DEF

Mesure de ce qui se situe sous le plan de référence d'un site archéologique.

OBS

Généralement utilisée pour déterminer l'emplacement vertical des artefacts, des vestiges ou des couches du sol d'un carré donné, elle est ensuite convertie en mesure de l'altitude au-dessus du niveau marin.

Spanish

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