EPSG:10655

GR96 to GLLAT(2023) depth (1)

Attributes

Geodetic CRS: GR96

Datum: Greenland 1996

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Agency for Data Supply and Infrastructure; https://www.sdfi.dk

Revision date: 2024-07-30

Scope: Derivation of depths from GNSS observations.

Remarks: For reversible alternative to this transformation see GR96 to GR96 + GLLAT(2023) depth (1) (code 10656).

Method: Geographic3D to Depth (gtg)

Area of use: Greenland - offshore.

Description: (0,)

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Greenland - offshore.

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Definition: OGC Well Known Text 2 (2019)

COORDINATEOPERATION["GR96 to GLLAT(2023) depth (1)",
    VERSION["SDFI-Grl 2023"],
    SOURCECRS[
        GEOGCRS["GR96",
            DATUM["Greenland 1996",
                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",4909]]],
    TARGETCRS[
        VERTCRS["GLLAT(2023) depth",
            VDATUM["Greenland Lowest Astronomic Tide (2023)"],
            CS[vertical,1],
                AXIS["depth (D)",down,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",10650]]],
    METHOD["Geographic3D to Depth (gtg)",
        ID["EPSG",1127]],
    PARAMETERFILE["Geoid (height correction) model file","gllat_2023.tif"],
    OPERATIONACCURACY[0.1],
    USAGE[
        SCOPE["Derivation of depths from GNSS observations."],
        AREA["Greenland - offshore."],
        BBOX[56.38,-75,87.03,7.99]],
    ID["EPSG",10655],
    REMARK["For reversible alternative to this transformation see GR96 to GR96 + GLLAT(2023) depth (1) (code 10656)."]]

Definition: PROJ.4

+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=dk_sdfi_gllat_2023.tif +multiplier=1 +step +proj=axisswap +order=1,2,-3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:10655","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=dk_sdfi_gllat_2023.tif +multiplier=1 +step +proj=axisswap +order=1,2,-3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "GR96 to GLLAT(2023) depth (1)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "GR96",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Greenland 1996",
            "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": 4909
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "GLLAT(2023) depth",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Greenland Lowest Astronomic Tide (2023)"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Depth",
                    "abbreviation": "D",
                    "direction": "down",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 10650
        }
    },
    "method": {
        "name": "Geographic3D to Depth (gtg)",
        "id": {
            "authority": "EPSG",
            "code": 1127
        }
    },
    "parameters": [
        {
            "name": "Geoid (height correction) model file",
            "value": "gllat_2023.tif",
            "id": {
                "authority": "EPSG",
                "code": 8666
            }
        }
    ],
    "accuracy": "0.1",
    "scope": "Derivation of depths from GNSS observations.",
    "area": "Greenland - offshore.",
    "bbox": {
        "south_latitude": 56.38,
        "west_longitude": -75,
        "north_latitude": 87.03,
        "east_longitude": 7.99
    },
    "id": {
        "authority": "EPSG",
        "code": 10655
    },
    "remarks": "For reversible alternative to this transformation see GR96 to GR96 + GLLAT(2023) depth (1) (code 10656)."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=pipeline"
	"step"
	"proj=axisswap"
	"order=2,1"
	"step"
	"proj=unitconvert"
	"xy_in=deg"
	"xy_out=rad"
	"step"
	"inv"
	"proj=vgridshift"
	"grids=dk_sdfi_gllat_2023.tif"
	"multiplier=1"
	"step"
	"proj=axisswap"
	"order=1,2,-3"
	"step"
	"proj=unitconvert"
	"xy_in=rad"
	"xy_out=deg"
	"step"
	"proj=axisswap"
	"order=2,1"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=dk_sdfi_gllat_2023.tif +multiplier=1 +step +proj=axisswap +order=1,2,-3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	<Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=dk_sdfi_gllat_2023.tif +multiplier=1 +step +proj=axisswap +order=1,2,-3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10655, 'EPSG', 10655, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=dk_sdfi_gllat_2023.tif +multiplier=1 +step +proj=axisswap +order=1,2,-3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');