EPSG
Instituto Hidrográfico, https://www.hidrografico.pt/
2023-08-07
Hydrography and nautical charting.
Offshore of Madeira, Desertas and Selvagens islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.4m below the Cais da Pontinha vertical reference surface.
Portugal - Madeira and Desertas islands - nearshore.
(0,)
Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["Cais da Pontinha height to ZH Portugal depth (1)", VERSION["IH-Por Madeira"], SOURCECRS[ VERTCRS["Cais da Pontinha height", VDATUM["Cais da Pontinha"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",6178]]], 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["Cais da Pontinha depth to ZH Portugal depth (1)", VERSION["IH-Por Madeira"], SOURCECRS[ VERTCRS["Cais da Pontinha depth", VDATUM["Cais da Pontinha"], CS[vertical,1], AXIS["depth (D)",down, LENGTHUNIT["metre",1]], ID["EPSG",10370]]], 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",-1.4, LENGTHUNIT["metre",1], ID["EPSG",8603]], OPERATIONACCURACY[0.0], ID["EPSG",10382], REMARK["Offshore of Madeira, Desertas and Selvagens islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.4m below the Cais da Pontinha vertical reference surface."]]], OPERATIONACCURACY[0.0], USAGE[ SCOPE["Hydrography and nautical charting."], AREA["Portugal - Madeira and Desertas islands - nearshore."], BBOX[32.35,-17.33,32.93,-16.4]], ID["EPSG",10394], REMARK["Offshore of Madeira, Desertas and Selvagens islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.4m below the Cais da Pontinha vertical reference surface."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ConcatenatedOperation", "name": "Cais da Pontinha height to ZH Portugal depth (1)", "source_crs": { "type": "VerticalCRS", "name": "Cais da Pontinha height", "datum": { "type": "VerticalReferenceFrame", "name": "Cais da Pontinha" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 6178 } }, "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": "Cais da Pontinha depth to ZH Portugal depth (1)", "source_crs": { "type": "VerticalCRS", "name": "Cais da Pontinha depth", "datum": { "type": "VerticalReferenceFrame", "name": "Cais da Pontinha" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Depth", "abbreviation": "D", "direction": "down", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 10370 } }, "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": -1.4, "unit": "metre", "id": { "authority": "EPSG", "code": 8603 } } ], "accuracy": "0.0", "id": { "authority": "EPSG", "code": 10382 }, "remarks": "Offshore of Madeira, Desertas and Selvagens islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.4m below the Cais da Pontinha vertical reference surface." } ], "accuracy": "0.0", "scope": "Hydrography and nautical charting.", "area": "Portugal - Madeira and Desertas islands - nearshore.", "bbox": { "south_latitude": 32.35, "west_longitude": -17.33, "north_latitude": 32.93, "east_longitude": -16.4 }, "id": { "authority": "EPSG", "code": 10394 }, "remarks": "Offshore of Madeira, Desertas and Selvagens islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.4m below the Cais da Pontinha vertical reference surface." }
Definition: Mapnik
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