below datum
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Datum (geodesy) — Geodesy Fundamentals Geodesy · … 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
Sea Level Datum of 1929 — Geodesy Fundamentals Geodesy · … Wikipedia
National Register of Historic Places listings in Manhattan below 14th Street — Main article: National Register of Historic Places listings in New York County, New York List of the National Register of Historic Places listings in Manhattan below 14th Street Map of all coordinates from Google … Wikipedia
altitude datum — The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 29.92… … Military dictionary
altitude datum — The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 1013.2… … Aviation 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
Lake Michigan — Landsat … Wikipedia
Geology of Mars — Mars Mars as seen by the Hubble Space Telescope Designations … Wikipedia
Diacria quadrangle — Map of Diacria quadrangle from Mars Orbiter Laser Altimeter (MOLA) data. The highest elevations are red and the lowest are blue Coordinates … Wikipedia
Olympia Undae — Mars Global Digital Dune Database MC 1 map showing the North Polar Sand Sea. Olympia Undae is the area with dune coverage between 120° to 240°E longitude … Wikipedia
