EPSG:10808

NKG land uplift (deformation) model NKG_RF17vel

Attributes

Geodetic CRS: ETRF2014

Datum: European Terrestrial Reference Frame 2014

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Häkli et al., "NKG2020 transformation: An updated transformation between dynamic and static reference frames in the Nordic and Baltic countries"; Journal of Geodetic Science 2023; 13: 20220155, https://doi.org/10.1515/jogs-2022-0155.

Revision date: 2025-08-29

Scope: Change of coordinate epoch in 3-dimensions (φλh).

Remarks: Replaces NKG_RF03vel model. Accuracy estimated as 0.1, 0.1, and 0.4 mm/year for the North, East, and Up components, respectively. Because the difference in coordinates that results from application of the model is small (under a decimetre), although the interpolation CRS is given as ETRF2014 any realization of ETRS89 (including NKG_ETRF14) may be used as the interpolation CRS.

Method: Point motion (geocen domain) using NEU velocity grid (Gravsoft)

Area of use: Denmark, Estonia, Finland, Latvia, Lithuania, and Sweden - onshore and offshore; Norway - onshore, nearshore, and offshore southeast of a line joining Haugesund and the western limit of the Norway-Denmark maritime boundary.

Description: (0,)

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Definition: OGC Well Known Text 2 (2019)

POINTMOTIONOPERATION["NKG land uplift (deformation) model NKG_RF17vel",
    VERSION["NKG_RF17vel"],
    SOURCECRS[
        GEOGCRS["ETRF2014",
            DYNAMIC[
                FRAMEEPOCH[1989]],
            DATUM["European Terrestrial Reference Frame 2014",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,3],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["ellipsoidal height (h)",up,
                    ORDER[3],
                    LENGTHUNIT["metre",1]],
            ID["EPSG",8403]]],
    METHOD["Point motion (geocen domain) using NEU velocity grid (Gravsoft)",
        ID["EPSG",1139]],
    PARAMETERFILE["Point motion velocity north grid file","NKG_RF17vel_N.GRI"],
    OPERATIONACCURACY[0.001],
    USAGE[
        SCOPE["Change of coordinate epoch in 3-dimensions (φλh)."],
        AREA["Denmark, Estonia, Finland, Latvia, Lithuania, and Sweden - onshore and offshore; Norway - onshore, nearshore, and offshore southeast of a line joining Haugesund and the western limit of the Norway-Denmark maritime boundary."],
        BBOX[53.89,3.24,71.39,31.77]],
    ID["EPSG",10808],
    REMARK["Replaces NKG_RF03vel model. Accuracy estimated as 0.1, 0.1, and 0.4 mm/year for the North, East, and Up components, respectively. Because the difference in coordinates that results from application of the model is small (under a decimetre), although the interpolation CRS is given as ETRF2014 any realization of ETRS89 (including NKG_ETRF14) may be used as the interpolation CRS."]]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "PointMotionOperation",
    "name": "NKG land uplift (deformation) model NKG_RF17vel",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "ETRF2014",
        "datum": {
            "type": "DynamicGeodeticReferenceFrame",
            "name": "European Terrestrial Reference Frame 2014",
            "frame_reference_epoch": 1989,
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                },
                {
                    "name": "Ellipsoidal height",
                    "abbreviation": "h",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 8403
        }
    },
    "method": {
        "name": "Point motion (geocen domain) using NEU velocity grid (Gravsoft)",
        "id": {
            "authority": "EPSG",
            "code": 1139
        }
    },
    "parameters": [
        {
            "name": "Point motion velocity north grid file",
            "value": "NKG_RF17vel_N.GRI",
            "id": {
                "authority": "EPSG",
                "code": 1072
            }
        }
    ],
    "accuracy": "0.001",
    "scope": "Change of coordinate epoch in 3-dimensions (φλh).",
    "area": "Denmark, Estonia, Finland, Latvia, Lithuania, and Sweden - onshore and offshore; Norway - onshore, nearshore, and offshore southeast of a line joining Haugesund and the western limit of the Norway-Denmark maritime boundary.",
    "bbox": {
        "south_latitude": 53.89,
        "west_longitude": 3.24,
        "north_latitude": 71.39,
        "east_longitude": 31.77
    },
    "id": {
        "authority": "EPSG",
        "code": 10808
    },
    "remarks": "Replaces NKG_RF03vel model. Accuracy estimated as 0.1, 0.1, and 0.4 mm/year for the North, East, and Up components, respectively. Because the difference in coordinates that results from application of the model is small (under a decimetre), although the interpolation CRS is given as ETRF2014 any realization of ETRS89 (including NKG_ETRF14) may be used as the interpolation CRS."
}

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10808, 'EPSG', 10808, 'None', 'None');