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This report compares currently available transformation parameters for converting between NZGD49 (New Zealand Geodetic Datum 1949) and WGS84 (World Geodetic System 1984) coordinates.

With the establishment of a new datum comes a need to transform coordinates from one datum to the other as only a small number of marks have been surveyed in terms of both datums.

The 4 September 2010 Darfield (Canterbury) earthquake resulted in up to 5 metres of lateral slip along the previously unknown Greendale Fault (Figure 1) and associated ground surface displacements of up to about 2.5 metres within the surrounding region (Quigley et al., 2010, 2012; Beavan et al., 2010). Land Information New Zealand (LINZ) requires a way to correct and update the survey system for the effects of the earthquake.

These specifications relate to the provision of geodetic control maintenance to support the geodetic programme as required by the Cadastral Survey Act 2002 sec 7(1)(a) and (b).

This report examines height datum technologies and also looks at current international practice with respect to height datum issues. It presents some wider user perspectives before looking more specifically at the physical characteristics of New Zealand and the particular problems that it faces.

This report is the response to a brief from Land Information New Zealand (LINZ) to establish the economic foundation for funding a modern geodetic system for New Zealand.

This specification details the requirements for the reinstatement or replacement of marks identified as needing protection.

PowerNet field crews in New Zealand use SouthPAN to capture high-accuracy asset location data, reducing reliance on specialist surveyors and improving efficiency.

Page Bloomer make use of SouthPAN to consistently monitor, map, and manage their research and trial sites with greater efficiency and lower costs.

Information for Controllers, Recovery Managers, Intelligence Functions and GIS Teams.

The Official Information Act response provides details of LINZ confirming a datums height discrepancy and how third parties/the public were notified of the discrepancy.

This standard defines frameworks for specifying and classifying the accuracy of coordinates and the spatial relationships between them.

This standard defines the national vertical reference system: New Zealand Vertical Datum 2009 (NZVD2009).