EPSG
Instituto Hidrográfico, https://www.hidrografico.pt/
2023-08-07
Hydrography and nautical charting.
The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface off mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10393).
Portugal - mainland - nearshore.
(0,)
Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["Cascais height to ZH Portugal depth (1)", VERSION["IH-Por mainland"], SOURCECRS[ VERTCRS["Cascais height", VDATUM["Cascais"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",5780]]], TARGETCRS[ VERTCRS["ZH Portugal depth", VDATUM["Chart Datum Portugal "], CS[vertical,1], AXIS["depth (D)",down, LENGTHUNIT["metre",1]], ID["EPSG",10349]]], STEP[ CONVERSION["Height <> Depth Conversion", METHOD["Height Depth Reversal", ID["EPSG",1068]], ID["EPSG",7812]]], STEP[ 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], 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)."]]], OPERATIONACCURACY[0.0], USAGE[ SCOPE["Hydrography and nautical charting."], AREA["Portugal - mainland - nearshore."], BBOX[36.9,-9.57,41.88,-7.39]], ID["EPSG",10392], REMARK["The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface off mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10393)."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ConcatenatedOperation", "name": "Cascais height to ZH Portugal depth (1)", "source_crs": { "type": "VerticalCRS", "name": "Cascais height", "datum": { "type": "VerticalReferenceFrame", "name": "Cascais" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5780 } }, "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 } }, "steps": [ { "type": "Conversion", "name": "Height <> Depth Conversion", "method": { "name": "Height Depth Reversal", "id": { "authority": "EPSG", "code": 1068 } }, "id": { "authority": "EPSG", "code": 7812 } }, { "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", "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)." } ], "accuracy": "0.0", "scope": "Hydrography and nautical charting.", "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": 10392 }, "remarks": "The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface off mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10393)." }
Definition: Mapnik
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