Choose Index below for a list of all words and phrases defined in this glossary.
tidal datum - [geodesy] A vertical datum in which zero height is defined by a particular tidal surface, often mean sea level. Examples of tidal surfaces include mean sea level, mean low water springs, and mean lower low water. Most traditional vertical geodetic datums are tidal datums.
[Category=Geospatial ]
Source: esri, 12 September 2012 09:06:17, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation
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