NZGD2000 deformation model version 2013-08-01 reverse patch coordinate shifts contours
Toitū Te Whenua Land Information New Zealand
The deformation model associated with the NZGD2000 datum was updated, nominally at 1 August 2013. The actual update of LINZ data took place on 14-15 December 2013. This update involved reverse patches, which means that the "reference coordinates" of features were updated. The main updates relate to the Christchurch earthquakes. The patch also updated coordinates affected by other South Island earthquakes since 2000.
These updates have been incorporated into Landonline and resulted in spatial updates to all features in the affected areas.
This data set contains contours indicating the extent and magnitude of the coordinate changes to assist in assessing the impact of this update on client data sets. This dataset is also available as a [multipolygon](http://data.linz.govt.nz/#/layer/1685-nzgd2000-deformation-model-version-2013-08-01-reverse-patch-coordinate-shifts-filled-contours/).
For more information see [here](http://www.landonline.govt.nz/landonline-system-updates/south-island-coordinate-update)
This data has been compiled by contouring the magnitude of the coordinate shifts that will be applied in Landonline. This is based on a provisional version of the deformation model, but it will not be significantly different from the final version.