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Geodetic CRS: Nahrwan 1934
Datum: Nahrwan 1934
Ellipsoid: Clarke 1880 (RGS)
Prime meridian: Greenwich
Data source: EPSG
Information source: Ministry of Oil 2008 licence round.
Revision date: 2015-02-06
Scope: Approximate transformation of seismic data acquired before 1985 to CRS used post 1985.
Remarks: May be emulated using geocentric translations from Nahrwan 1934 to Karbala 1979 of dX=-324, dY=178 and dZ=154m.
Method: Cartesian Grid Offsets
Description: (0,)
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Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Nahrwan 1934 / UTM zone 38N to Karbala 1979 / UTM zone 38N (21)", VERSION["MoO-Irq map B sheet 21"], SOURCECRS[ PROJCRS["Nahrwan 1934 / UTM zone 38N", BASEGEOGCRS["Nahrwan 1934", DATUM["Nahrwan 1934", ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4744]], CONVERSION["UTM zone 38N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",45, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], ID["EPSG",7006]]], TARGETCRS[ PROJCRS["Karbala 1979 / UTM zone 38N", BASEGEOGCRS["Karbala 1979", DATUM["Karbala 1979", ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4743]], CONVERSION["UTM zone 38N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",45, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], ID["EPSG",3392]]], METHOD["Cartesian Grid Offsets", ID["EPSG",9656]], PARAMETER["Easting offset",355, LENGTHUNIT["metre",1], ID["EPSG",8728]], PARAMETER["Northing offset",185, LENGTHUNIT["metre",1], ID["EPSG",8729]], OPERATIONACCURACY[5.0], USAGE[ SCOPE["Approximate transformation of seismic data acquired before 1985 to CRS used post 1985."], AREA["Iraq - between UTM 3290000mN and 3470000mN (approximately 29°47'N and 31°21'N) and between UTM 600000mE (approximately 46°04'E) and 48°E."], BBOX[29.72,46.03,31.37,48]], ID["EPSG",7028], REMARK["May be emulated using geocentric translations from Nahrwan 1934 to Karbala 1979 of dX=-324, dY=178 and dZ=154m."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "Nahrwan 1934 / UTM zone 38N to Karbala 1979 / UTM zone 38N (21)", "source_crs": { "type": "ProjectedCRS", "name": "Nahrwan 1934 / UTM zone 38N", "base_crs": { "type": "GeographicCRS", "name": "Nahrwan 1934", "datum": { "type": "GeodeticReferenceFrame", "name": "Nahrwan 1934", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4744 }, "remarks": "In Iran, replaced by FD58. In Iraq, replaced by Karbala 1979." }, "conversion": { "name": "UTM zone 38N", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 45, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 7006 } }, "target_crs": { "type": "ProjectedCRS", "name": "Karbala 1979 / UTM zone 38N", "base_crs": { "type": "GeographicCRS", "name": "Karbala 1979", "datum": { "type": "GeodeticReferenceFrame", "name": "Karbala 1979", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4743 }, "remarks": "Geodetic network established by Polservice consortium. Replaces Nahrwan 1934 (CRS code 4744). Replaced by IGRS (CRS code 3889). At time of record population, information regarding usage within oil sector is not available." }, "conversion": { "name": "UTM zone 38N", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 45, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 3392 } }, "method": { "name": "Cartesian Grid Offsets", "id": { "authority": "EPSG", "code": 9656 } }, "parameters": [ { "name": "Easting offset", "value": 355, "unit": "metre", "id": { "authority": "EPSG", "code": 8728 } }, { "name": "Northing offset", "value": 185, "unit": "metre", "id": { "authority": "EPSG", "code": 8729 } } ], "accuracy": "5.0", "scope": "Approximate transformation of seismic data acquired before 1985 to CRS used post 1985.", "area": "Iraq - between UTM 3290000mN and 3470000mN (approximately 29°47'N and 31°21'N) and between UTM 600000mE (approximately 46°04'E) and 48°E.", "bbox": { "south_latitude": 29.72, "west_longitude": 46.03, "north_latitude": 31.37, "east_longitude": 48 }, "id": { "authority": "EPSG", "code": 7028 }, "remarks": "May be emulated using geocentric translations from Nahrwan 1934 to Karbala 1979 of dX=-324, dY=178 and dZ=154m." }
Definition: Mapnik
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