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hydrographic datum

См. также в других словарях:

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

  • 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

  • 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

  • depth — In maritime/hydrographic use, the vertical distance from the plane of the hydrographic datum to the bed of the sea, lake, or river …   Military dictionary

  • depth contour — A line connecting points of equal depth below the hydrographic datum. Also called bathymetric contour or depth curve …   Military dictionary

  • Nautical chart — A nautical chart is a graphic representation of a maritime area and adjacent coastal regions. Depending on the scale of the chart, it may show depths of water and heights of land (topographic map), natural features of the seabed, details of the… …   Wikipedia

  • map — mappable, adj. mapper, n. /map/, n., v., mapped, mapping. n. 1. a representation, usually on a flat surface, as of the features of an area of the earth or a portion of the heavens, showing them in their respective forms, sizes, and relationships… …   Universalium

  • Map — /map/, n. Walter, c1140 1209?, Welsh ecclesiastic, poet, and satirist. Also, Mapes /mayps, may peez/. * * * I Graphic representation, drawn to scale and usually on a flat surface, of features usually geographic, geologic, or geopolitical of an… …   Universalium

  • MAP — See modified American plan. * * * I Graphic representation, drawn to scale and usually on a flat surface, of features usually geographic, geologic, or geopolitical of an area of the Earth or of any celestial body. Globes are maps represented on… …   Universalium

  • surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …   Universalium

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