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).
2020-08-29
Geodesy, hydrography, transfer of accurate heights over distances greater than 10km.
Normal heights. Extends gravity-related heights to offshore. See AHD (datum code 5111) for cadastral survey or local engineering survey including construction or mining.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Australian Vertical Working Surface", "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": 1292 } }