Geodesy, engineering survey.
The adjustment also included the Czech and Slovak Republics but not adopted there, with earlier 1957 adjustment remaining in use: see CRS code 8357.
58.52 105.3
35.14 -168.97
81.91 19.57
19.57 35.14
-168.97 81.91
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Baltic 1977 height", VDATUM["Baltic 1977"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey."], AREA["Armenia; Azerbaijan; Belarus; Estonia - onshore; Georgia - onshore; Kazakhstan; Kyrgyzstan; Latvia - onshore; Lithuania - onshore; Moldova; Russian Federation - onshore; Tajikistan; Turkmenistan; Ukraine - onshore; Uzbekistan."], BBOX[35.14,19.57,81.91,-168.97]], ID["EPSG",5705]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Baltic 1977 height", "datum": { "type": "VerticalReferenceFrame", "name": "Baltic 1977" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, engineering survey.", "area": "Armenia; Azerbaijan; Belarus; Estonia - onshore; Georgia - onshore; Kazakhstan; Kyrgyzstan; Latvia - onshore; Lithuania - onshore; Moldova; Russian Federation - onshore; Tajikistan; Turkmenistan; Ukraine - onshore; Uzbekistan.", "bbox": { "south_latitude": 35.14, "west_longitude": 19.57, "north_latitude": 81.91, "east_longitude": -168.97 }, "id": { "authority": "EPSG", "code": 5705 } }
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 ( 5705, 'EPSG', 5705, '+vunits=m +no_defs +type=crs', 'VERT_CS["Baltic 1977 height",VERT_DATUM["Baltic 1977",2005,AUTHORITY["EPSG","5105"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5705"]]');