vertical datum
C27982
concept
A vertical datum is a reference surface or level used as a baseline for measuring elevations or depths in geospatial and surveying applications.
Observed surface forms (4)
| Surface form | Occurrences |
|---|---|
| United States vertical reference system | 1 |
| geopotential datum | 1 |
| height reference system | 1 |
| vertical reference system | 1 |
Instances (5)
| Instance | Via concept surface |
|---|---|
| NAVD 88 | — |
| North American Vertical Datum of 1988 | — |
|
Danish Normal Null (DNN)
surface form:
Danish Normal Null
|
vertical reference system |
| North American-Pacific Geopotential Datum of 2022 | — |
| National Geodetic Vertical Datum of 1929 | — |