{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"CompoundCRS","name":"NAD83 / Alaska zone 1 + NAVD88 height","components":[{"type":"ProjectedCRS","name":"NAD83 / Alaska zone 1","base_crs":{"type":"GeographicCRS","name":"NAD83","datum":{"type":"GeodeticReferenceFrame","name":"North American Datum 1983","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"}]},"id":{"authority":"EPSG","code":4269}},"conversion":{"name":"SPCS83 Alaska zone 1 (meter)","method":{"name":"Hotine Oblique Mercator (variant A)","id":{"authority":"EPSG","code":9812}},"parameters":[{"name":"Latitude of projection centre","value":57,"unit":"degree","id":{"authority":"EPSG","code":8811}},{"name":"Longitude of projection centre","value":-133.666666666667,"unit":"degree","id":{"authority":"EPSG","code":8812}},{"name":"Azimuth at projection centre","value":323.130102361111,"unit":"degree","id":{"authority":"EPSG","code":8813}},{"name":"Angle from Rectified to Skew Grid","value":323.130102361111,"unit":"degree","id":{"authority":"EPSG","code":8814}},{"name":"Scale factor at projection centre","value":0.9999,"unit":"unity","id":{"authority":"EPSG","code":8815}},{"name":"False easting","value":5000000,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":-5000000,"unit":"metre","id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Easting","abbreviation":"X","direction":"east","unit":"metre"},{"name":"Northing","abbreviation":"Y","direction":"north","unit":"metre"}]}},{"type":"VerticalCRS","name":"NAVD88 height","datum":{"type":"VerticalReferenceFrame","name":"North American Vertical Datum 1988"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]}}],"scope":"Engineering survey, topographic mapping.","area":"United States (USA) - Alaska - east of 141°W; i.e. Panhandle.","bbox":{"south_latitude":54.61,"west_longitude":-141,"north_latitude":60.35,"east_longitude":-129.99},"id":{"authority":"EPSG","code":8803}}