Engineering survey.
POM96 height = WGS 84 ellipsoid height - value of geoid undulation derived by bilinear interpolation of EGM96 geoid model - 1.58m = EGM96 height - 1.58m. See CRS code 5773 and transformation code 10084.
-8.54 147.03
-10.42 144.4
-6.67 149.67
144.4 -10.42
149.67 -6.67
Definition: OGC Well Known Text 2 (2019)
VERTCRS["POM96 height", VDATUM["Port Moresby 1996"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey."], AREA["Papua New Guinea - onshore - Gulf province east of 144°24'E, Central province and National Capital District."], BBOX[-10.42,144.4,-6.67,149.67]], ID["EPSG",7832]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "POM96 height", "datum": { "type": "VerticalReferenceFrame", "name": "Port Moresby 1996" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Engineering survey.", "area": "Papua New Guinea - onshore - Gulf province east of 144°24'E, Central province and National Capital District.", "bbox": { "south_latitude": -10.42, "west_longitude": 144.4, "north_latitude": -6.67, "east_longitude": 149.67 }, "id": { "authority": "EPSG", "code": 7832 } }
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 ( 7832, 'EPSG', 7832, '+vunits=m +no_defs +type=crs', 'VERT_CS["POM96 height",VERT_DATUM["Port Moresby 1996",2005,AUTHORITY["EPSG","1171"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","7832"]]');