low-water datum

См. также в других словарях:

• low water line — the line where the established low water datum intersects the shore …   Dictionary of ichthyology

• Datum (geodesy) — Geodesy Fundamentals Geodesy · …   Wikipedia

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• Chart datum — US civil and maritime uses of tidal data A chart datum is the level of water that charted depths displayed on a nautical chart are measured from. A chart datum is generally a tidal datum; that is, a datum derived from some phase of the tide.… …   Wikipedia

• Ordnance Datum — In the British Isles, an Ordnance Datum or OD is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as AOD for above ordnance datum . Usually mean sea level (MSL) is used for… …   Wikipedia

• tidal datum — (in a hydrographic survey) a curved surface representing one phase of a tide, usually mean low water, taken as a datum level. * * * …   Universalium

• tidal datum — (in a hydrographic survey) a curved surface representing one phase of a tide, usually mean low water, taken as a datum level …   Useful english dictionary

• chart datum — noun the level below which depths are indicated and above which heights of the tides are expressed; usually mean level of low water at a spring tide …   Wiktionary

• LWD — • low water datum …   Maritime acronyms and abbreviations

• Great Lakes — This article is about the Great Lakes of North America. For the region, see Great Lakes region (North America). For other uses of this term, see Great Lakes (disambiguation). A rare cloudless satellite view of the entire Great Lakes region, April …   Wikipedia

• foreshore — That portion of a beach extending from the low water (datum) shoreline to the limit of normal high water wave wash …   Military dictionary