Data source: EPSG
Information source: OGP
Revision date: 2012-08-10
Scope: Hydrography, drilling, marine geophysics.
Remarks: Not specific to any location or epoch.
Area of use: World.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Instantaneous Water Level", "scope": "Hydrography, drilling, marine geophysics.", "area": "World.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 5113 } }