Engineering survey.
Kiunga height = WGS 84 ellipsoid height - value of geoid undulation derived by bilinear interpolation of EGM2008 geoid model - 3.0m = EGM2008 height - 3.0m. See CRS code 3855 and transformation code 3858.
-7.17 142.43
-9.35 140.85
-5.0 144.01
140.85 -9.35
144.01 -5.0
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Kiunga height", VDATUM["Kiunga"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey."], AREA["Papua New Guinea - onshore south of 5°S and west of 144°E."], BBOX[-9.35,140.85,-5,144.01]], ID["EPSG",7652]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Kiunga height", "datum": { "type": "VerticalReferenceFrame", "name": "Kiunga" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Engineering survey.", "area": "Papua New Guinea - onshore south of 5°S and west of 144°E.", "bbox": { "south_latitude": -9.35, "west_longitude": 140.85, "north_latitude": -5, "east_longitude": 144.01 }, "id": { "authority": "EPSG", "code": 7652 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+vunits=m +no_defs +type=crs"> <Layer srs="+vunits=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 7652, 'EPSG', 7652, '+vunits=m +no_defs +type=crs', 'VERT_CS["Kiunga height",VERT_DATUM["Kiunga",2005,AUTHORITY["EPSG","1151"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","7652"]]');