Cascais depth to ZH Portugal depth (1)

Attributes

Data source: EPSG

Information source: Instituto Hidrográfico, https://www.hidrografico.pt/

Revision date: 2023-08-07

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

Remarks: The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface offshore mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10381).

Method: Vertical Offset

Area of use: Portugal - mainland - nearshore.

Description: (0,)

Covered area powered by MapTiler

Portugal - mainland - nearshore.

Definition: OGC Well Known Text 2 (2019)

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COORDINATEOPERATION["Cascais depth to ZH Portugal depth (1)",
    VERSION["IH-Por mainland"],
    SOURCECRS[
        VERTCRS["Cascais depth",
            VDATUM["Cascais"],
            CS[vertical,1],
                AXIS["depth (D)",down,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",10364]]],
    TARGETCRS[
        VERTCRS["ZH Portugal depth",
            VDATUM["Chart Datum Portugal "],
            CS[vertical,1],
                AXIS["depth (D)",down,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",10349]]],
    METHOD["Vertical Offset",
        ID["EPSG",9616]],
    PARAMETER["Vertical Offset",-2,
        LENGTHUNIT["metre",1],
        ID["EPSG",8603]],
    OPERATIONACCURACY[0.0],
    USAGE[
        SCOPE["Change of depth to a different vertical reference surface."],
        AREA["Portugal - mainland - nearshore."],
        BBOX[36.9,-9.57,41.88,-7.39]],
    ID["EPSG",10380],
    REMARK["The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface offshore mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10381)."]]

Definition: PROJ.4

+proj=geogoffset +dh=-2

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:10380","+proj=geogoffset +dh=-2");

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "Cascais depth to ZH Portugal depth (1)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "Cascais depth",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Cascais"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Depth",
                    "abbreviation": "D",
                    "direction": "down",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 10364
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "ZH Portugal depth",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Chart Datum Portugal "
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Depth",
                    "abbreviation": "D",
                    "direction": "down",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 10349
        }
    },
    "method": {
        "name": "Vertical Offset",
        "id": {
            "authority": "EPSG",
            "code": 9616
        }
    },
    "parameters": [
        {
            "name": "Vertical Offset",
            "value": -2,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8603
            }
        }
    ],
    "accuracy": "0.0",
    "scope": "Change of depth to a different vertical reference surface.",
    "area": "Portugal - mainland - nearshore.",
    "bbox": {
        "south_latitude": 36.9,
        "west_longitude": -9.57,
        "north_latitude": 41.88,
        "east_longitude": -7.39
    },
    "id": {
        "authority": "EPSG",
        "code": 10380
    },
    "remarks": "The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface offshore mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10381)."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=geogoffset"
	"dh=-2"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=geogoffset +dh=-2">
	<Layer srs="+proj=geogoffset +dh=-2">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10380, 'EPSG', 10380, '+proj=geogoffset +dh=-2', 'None');

EPSG:10380