The relationship between the GRS80 ellipsoid and the New Zealand Vertical Datum 2016 (NZVD2016) is modelled by the New Zealand Quasigeoid 2016 (NZGeoid2016). The relationship value is represented by the attribute “N”, in metres.
This relationship and NZVD2016 is formally defined in the LINZ standard LINZS25009.
NZGeoid2016 can be used to convert New Zealand Geodetic Datum 2000 (NZGD2000) ellipsoidal heights to NZVD2016 normal-orthometric heights.
The conversion value is represented by the attribute “N”, in metres.
NZGeoid2016 is published on a one arc-minute grid (approximately 1.8 kilometres) over the New Zealand continental shelf (160° E to 170° W, 25° S to 60° S).
NZGeoid2016 was calculated by enhancing the EIGEN-6C4 global gravity model with, terrestrial, ship-track, satellite and airborne gravity data. GPS-levelling observations were not used to compute NZGeoid2016.
Users may also be interested in transforming heights to any of the 13 historic local vertical datums used in New Zealand using the appropriate datum relationship grid displayed in the NZ Height Conversion Index.
More information on these transformations is available on the LINZ website.
You may use this work for commercial purposes.
You must attribute the creator in your own works.
|Category||Geodetic > Vertical Datum 2016|
|Tags||LAND-Cadastre, LAND-Geodesy, LAND-Topography, New Zealand|
|Metadata||Dublin Core, ISO 19115/19139|
|Data type||Vector point||Feature count||3783901|
|Attributes||longitude, latitude, N|
|Services||Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|