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Geodetic CRS: Nahrwan 1967
Datum: Nahrwan 1967
Ellipsoid: Clarke 1880 (RGS)
Prime meridian: Greenwich
Data source: EPSG
Information source: Ministry of Oil 2008 licence round.
Revision date: 2010-03-31
Scope: Approximate transformation of seismic data acquired before 1985 to CRS used post 1985.
Remarks: There is some doubt as to whether source CRS is Nahrwan 1967 or Nahrwan 1934. May be emulated using geocentric translations from Nahrwan 1967 to Karbala 1979 of dX=-313, dY=203 and dZ=173m.
Method: Cartesian Grid Offsets
Area of use: Iraq - north of UTM 3650000mN (approximately 32°58'N) and west of UTM zone 37 600000mE (approximately 40°04'E).
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Nahrwan 1967 / UTM zone 37N to Karbala 1979 / UTM zone 37N (8)", VERSION["MoO-Irq map B sheet 8"], SOURCECRS[ PROJCRS["Nahrwan 1967 / UTM zone 37N", BASEGEOGCRS["Nahrwan 1967", DATUM["Nahrwan 1967", ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4270]], CONVERSION["UTM zone 37N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",39, 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",27037]]], TARGETCRS[ PROJCRS["Karbala 1979 / UTM zone 37N", 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 37N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",39, 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",3391]]], METHOD["Cartesian Grid Offsets", ID["EPSG",9656]], PARAMETER["Easting offset",355, LENGTHUNIT["metre",1], ID["EPSG",8728]], PARAMETER["Northing offset",208, 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 - north of UTM 3650000mN (approximately 32°58'N) and west of UTM zone 37 600000mE (approximately 40°04'E)."], BBOX[32.98,38.79,33.99,40.09]], ID["EPSG",5085], REMARK["There is some doubt as to whether source CRS is Nahrwan 1967 or Nahrwan 1934. May be emulated using geocentric translations from Nahrwan 1967 to Karbala 1979 of dX=-313, dY=203 and dZ=173m."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "Nahrwan 1967 / UTM zone 37N to Karbala 1979 / UTM zone 37N (8)", "source_crs": { "type": "ProjectedCRS", "name": "Nahrwan 1967 / UTM zone 37N", "base_crs": { "type": "GeographicCRS", "name": "Nahrwan 1967", "datum": { "type": "GeodeticReferenceFrame", "name": "Nahrwan 1967", "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": 4270 } }, "conversion": { "name": "UTM zone 37N", "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": 39, "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": 27037 } }, "target_crs": { "type": "ProjectedCRS", "name": "Karbala 1979 / UTM zone 37N", "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 37N", "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": 39, "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": 3391 } }, "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": 208, "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 - north of UTM 3650000mN (approximately 32°58'N) and west of UTM zone 37 600000mE (approximately 40°04'E).", "bbox": { "south_latitude": 32.98, "west_longitude": 38.79, "north_latitude": 33.99, "east_longitude": 40.09 }, "id": { "authority": "EPSG", "code": 5085 }, "remarks": "There is some doubt as to whether source CRS is Nahrwan 1967 or Nahrwan 1934. May be emulated using geocentric translations from Nahrwan 1967 to Karbala 1979 of dX=-313, dY=203 and dZ=173m." }
Definition: Mapnik
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