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Vertical Datum (VDT)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: vdt.ttl
- Name
verticalDatum- Datatype
- Enumeration
- Definition
- A reference surface with respect to which elevations and/or depths are specified.
- Description
- The values of elevation (or sometimes equivalently, height) and depth are determined along the direction of the reference surface normal.
- Accepted
- 2013-10-18
- Defined by
- DFDD
- Values
- VDT_1 WGS 84 Ellipsoid
- VDT_2 WGS 84 EGM96 Geoid
- VDT_3 Mean Sea Level (MSL)
- VDT_4 North American Vertical Datum (NAVD) 1988
- VDT_5 National Geodetic Vertical Datum (NGVD) 1929
- VDT_6 Ground Level
- VDT_7 WGS 84 EGM08 Geoid
- Used by
- ZI011 Vertical Coordinate Metadata
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.