Geodesy.
Published 2002-01-01; adopted by the Canadian federal government (2002) and the provincial governments of British Columbia (for mainland only, not Victoria Island) (2005) and Alberta (2004). Replaces NAD83(CSRS)v3. Replaced by NAD83(CSRS)v5.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "North American Datum of 1983 (CSRS) version 4", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 }, "scope": "Geodesy.", "area": "Canada - onshore and offshore - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon.", "bbox": { "south_latitude": 38.21, "west_longitude": -141.01, "north_latitude": 86.46, "east_longitude": -40.73 }, "id": { "authority": "EPSG", "code": 1195 } }