EPSG:5440

Baltic 1977 depth to Caspian depth (1)

Attributes

Geodetic CRS: Baltic 1977 height

Datum: Baltic 1977

Data source: EPSG

Information source: Hydrographic Department of Azerbaijan.

Revision date: 2018-02-16

Scope: Change of height to a different vertical reference surface.

Remarks: The Baltic 1977 vertical reference surface is 28m above the Caspian vertical reference surface.

Method: Vertical Offset

Area of use: Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore.

Description: (0,)

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SimpleMap
Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore.

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Definition: OGC Well Known Text 2 (2019)

COORDINATEOPERATION["Baltic 1977 depth to Caspian depth (1)",
    VERSION["Caspian Sea"],
    SOURCECRS[
        VERTCRS["Baltic 1977 depth",
            VDATUM["Baltic 1977"],
            CS[vertical,1],
                AXIS["depth (D)",down,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5612]]],
    TARGETCRS[
        VERTCRS["Caspian depth",
            VDATUM["Caspian Sea"],
            CS[vertical,1],
                AXIS["depth (D)",down,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5706]]],
    METHOD["Vertical Offset",
        ID["EPSG",9616]],
    PARAMETER["Vertical Offset",-28,
        LENGTHUNIT["metre",1],
        ID["EPSG",8603]],
    OPERATIONACCURACY[0.0],
    USAGE[
        SCOPE["Change of height to a different vertical reference surface."],
        AREA["Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore."],
        BBOX[37.35,46.95,46.97,53.93]],
    ID["EPSG",5440],
    REMARK["The Baltic 1977 vertical reference surface is 28m above the Caspian vertical reference surface."]]

Definition: PROJ.4

+proj=geogoffset +dh=-28

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:5440","+proj=geogoffset +dh=-28");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "Baltic 1977 depth to Caspian depth (1)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "Baltic 1977 depth",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Baltic 1977"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Depth",
                    "abbreviation": "D",
                    "direction": "down",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5612
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "Caspian depth",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Caspian Sea"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Depth",
                    "abbreviation": "D",
                    "direction": "down",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5706
        }
    },
    "method": {
        "name": "Vertical Offset",
        "id": {
            "authority": "EPSG",
            "code": 9616
        }
    },
    "parameters": [
        {
            "name": "Vertical Offset",
            "value": -28,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8603
            }
        }
    ],
    "accuracy": "0.0",
    "scope": "Change of height to a different vertical reference surface.",
    "area": "Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore.",
    "bbox": {
        "south_latitude": 37.35,
        "west_longitude": 46.95,
        "north_latitude": 46.97,
        "east_longitude": 53.93
    },
    "id": {
        "authority": "EPSG",
        "code": 5440
    },
    "remarks": "The Baltic 1977 vertical reference surface is 28m above the Caspian vertical reference surface."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=geogoffset"
	"dh=-28"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=geogoffset +dh=-28">
	<Layer srs="+proj=geogoffset +dh=-28">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 5440, 'EPSG', 5440, '+proj=geogoffset +dh=-28', 'None');