EPSG
Instituto Hidrográfico, https://www.hidrografico.pt/
2023-08-07
Hydrography and nautical charting.
Offshore of Santa Maria and Formigas islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.0m below the Cais da Vila do Porto vertical reference surface.
Portugal - eastern Azores - Santa Maria and Formigas islands - nearshore.
(0,)
Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["Cais da Vila do Porto height to ZH Portugal depth (1)", VERSION["IH-Por Santa Maria"], SOURCECRS[ VERTCRS["Cais da Vila do Porto height", VDATUM["Cais da Vila do Porto"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",6186]]], 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 Vila do Porto depth to ZH Portugal depth (1)", VERSION["IH-Por Santa Maria"], SOURCECRS[ VERTCRS["Cais da Vila do Porto depth", VDATUM["Cais da Vila do Porto"], CS[vertical,1], AXIS["depth (D)",down, LENGTHUNIT["metre",1]], ID["EPSG",10379]]], 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, LENGTHUNIT["metre",1], ID["EPSG",8603]], OPERATIONACCURACY[0.0], ID["EPSG",10391], REMARK["Offshore of Santa Maria and Formigas islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.0m below the Cais da Vila do Porto vertical reference surface."]]], OPERATIONACCURACY[0.0], USAGE[ SCOPE["Hydrography and nautical charting."], AREA["Portugal - eastern Azores - Santa Maria and Formigas islands - nearshore."], BBOX[36.87,-25.25,37.33,-24.71]], ID["EPSG",10411], REMARK["Offshore of Santa Maria and Formigas islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.0m below the Cais da Vila do Porto vertical reference surface."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ConcatenatedOperation", "name": "Cais da Vila do Porto height to ZH Portugal depth (1)", "source_crs": { "type": "VerticalCRS", "name": "Cais da Vila do Porto height", "datum": { "type": "VerticalReferenceFrame", "name": "Cais da Vila do Porto" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 6186 } }, "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 Vila do Porto depth to ZH Portugal depth (1)", "source_crs": { "type": "VerticalCRS", "name": "Cais da Vila do Porto depth", "datum": { "type": "VerticalReferenceFrame", "name": "Cais da Vila do Porto" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Depth", "abbreviation": "D", "direction": "down", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 10379 } }, "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, "unit": "metre", "id": { "authority": "EPSG", "code": 8603 } } ], "accuracy": "0.0", "id": { "authority": "EPSG", "code": 10391 }, "remarks": "Offshore of Santa Maria and Formigas islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.0m below the Cais da Vila do Porto vertical reference surface." } ], "accuracy": "0.0", "scope": "Hydrography and nautical charting.", "area": "Portugal - eastern Azores - Santa Maria and Formigas islands - nearshore.", "bbox": { "south_latitude": 36.87, "west_longitude": -25.25, "north_latitude": 37.33, "east_longitude": -24.71 }, "id": { "authority": "EPSG", "code": 10411 }, "remarks": "Offshore of Santa Maria and Formigas islands the Zero Hidrografico (CD Portugal) surface is defined to be 1.0m below the Cais da Vila do Porto vertical reference surface." }
Definition: Mapnik
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