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-› mean sea level
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Geography Categories
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mean sea level
Tidal datum that is the arithmetic mean of the hourly water elevations observed over a specific 19-year Metonic cycle (National Tidal Datum Epoch). Shorter series are specified in the name; that is, monthly mean sea level and yearly mean sea level. See: datum
See also: map, land use , chart, nautical , national geodetic vertical datum of 1929 , hydrography , high water |
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Dictionary of Cartography INDEX:List of Terms: Terms beginning with "A", Page 1 |
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Page Number:
1 A: Page 1 of 1.
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