Geodesy, topographic mapping.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Petrels 1972", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Geodesy, topographic mapping.", "area": "Antarctica - Adelie Land - Petrels island.", "bbox": { "south_latitude": -66.78, "west_longitude": 139.44, "north_latitude": -66.1, "east_longitude": 141.5 }, "id": { "authority": "EPSG", "code": 6636 } }