Engineering survey.
Kumul 34 height = WGS 84 ellipsoid height - value of geoid undulation derived by bilinear interpolation of EGM96 geoid model - 0.87m = EGM96 height - 0.87m. See CRS code 5773 and transformation code 10084.
-6.93 143.5
-8.28 142.24
-5.59 144.75
142.24 -8.28
144.75 -5.59
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Kumul 34 height", VDATUM["Kumul 34"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey."], AREA["Papua New Guinea - Papuan fold and thrust belt."], BBOX[-8.28,142.24,-5.59,144.75]], ID["EPSG",7651]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Kumul 34 height", "datum": { "type": "VerticalReferenceFrame", "name": "Kumul 34" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Engineering survey.", "area": "Papua New Guinea - Papuan fold and thrust belt.", "bbox": { "south_latitude": -8.28, "west_longitude": 142.24, "north_latitude": -5.59, "east_longitude": 144.75 }, "id": { "authority": "EPSG", "code": 7651 } }
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 ( 7651, 'EPSG', 7651, '+vunits=m +no_defs +type=crs', 'VERT_CS["Kumul 34 height",VERT_DATUM["Kumul 34",2005,AUTHORITY["EPSG","1150"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","7651"]]');