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.
All labels observed (5)
| Label | Occurrences |
|---|---|
| vertical datum canonical | 4 |
| United States vertical reference system | 1 |
| geopotential datum | 1 |
| height reference system | 1 |
| vertical reference system | 1 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: vertical datum
Generated description
A vertical datum is a reference surface or level used as a baseline for measuring elevations or depths in geospatial and surveying applications.
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 | — |