metre
Australian Vertical Working Surface
EPSG
Australian Vertical Working Surface (AVWS) Technical Implementation Plan v1.2, 26th August 2020, ANZLIC Intergovernmental Committee on Surveying and Mapping (ICSM) (http://www.icsm.gov.au).
2021-12-03
Geodesy, hydrography, transfer of accurate heights over distances greater than 10km.
For cadastral and local engineering applications see AHD height (CRS code 5711). AVWS is more accurate than AHD for applications over distances greater than 10 km.
-34.51 133.38
-60.55 93.41
-8.47 173.34
93.41 -60.55
173.34 -8.47
Definition: OGC Well Known Text 2 (2019)
VERTCRS["AVWS height", VDATUM["Australian Vertical Working Surface"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, hydrography, transfer of accurate heights over distances greater than 10km."], AREA["Australia including Lord Howe Island, Macquarie Island, Ashmore and Cartier Islands, Christmas Island, Cocos (Keeling) Islands, Norfolk Island. All onshore and offshore."], BBOX[-60.55,93.41,-8.47,173.34]], ID["EPSG",9458]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "AVWS height", "datum": { "type": "VerticalReferenceFrame", "name": "Australian Vertical Working Surface" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, hydrography, transfer of accurate heights over distances greater than 10km.", "area": "Australia including Lord Howe Island, Macquarie Island, Ashmore and Cartier Islands, Christmas Island, Cocos (Keeling) Islands, Norfolk Island. All onshore and offshore.", "bbox": { "south_latitude": -60.55, "west_longitude": 93.41, "north_latitude": -8.47, "east_longitude": 173.34 }, "id": { "authority": "EPSG", "code": 9458 } }
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 ( 9458, 'EPSG', 9458, '+vunits=m +no_defs +type=crs', 'VERT_CS["AVWS height",VERT_DATUM["Australian Vertical Working Surface",2005,AUTHORITY["EPSG","1292"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","9458"]]');