Geodetic technical and commissioned reports

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

This document is issued by the Office of Surveyor-General to document proposals for geodetic datum development.

The purpose of this Strategic Business Plan is to articulate a vision and plan for the development of the geodetic system.

The New Zealand Map Grid (NZMG) is a projection that is used to convert latitudes and longitudes to easting and northing coordinates used for most mapping of New Zealand. The projection is unique to New Zealand.

This report focuses on how the Zero and First Order NZGD2000 coordinates were computed but also outlines the GPS data collected, the processing of the GPS data, the computation of the velocity model and the adjustment of the lower order stations (e.g. Second, Third, Fourth and Fifth) in terms of the Zero and First Order stations.

This report discusses LINZ plans to update its requirements for providing access to the New Zealand spatial infrastructure.

This reports details the current geodetic activities of Land Information NZ in the Ross Dependency and summaries the work of other New Zealand and overseas agencies.

This document is issued by the Office of the Surveyor-General to: document proposals for development of NZGD2000 meridional circuits; obtain approval for the implementation of NZGD2000 meridional circuits.

This report documents a set of principles for a seabed cadastral survey system that have been developed in terms of Land Information NZ’s roles and responsibilities.

This report looks at the options for vertical datum development in New Zealand.

This report has been compiled by the Surveyor-General, Land Information New Zealand, on behalf of the Geosciences Standing Committee of the Royal Society of New Zealand for the General Assembly of the International Union of Geodesy and Geophysics, Birmingham, England, August 1999. It presents the New Zealand geodetic operations from 1995-1998.

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.

Land Information New Zealand has implemented a new national geodetic datum, New Zealand Geodetic Datum 2000 (NZGD2000). NZGD2000 replaces Chatham Islands 1979 datum and New Zealand Geodetic Datum 1949 (NZGD49).

In November 2000 a new datum, Ross Sea Region Geodetic Datum 2000 (RSRGD2000) was realised for the Ross Island area of the Ross Sea Region of Antarctica. This report details the parameters for, and realisation of, RSRGD2000.

This paper presents the preferred option for a new vertical datum and geoid model in New Zealand.

The Surveyor-General had a milestone (2j) to ‘investigate options for automated processing to monitor data from the GPS continuous tracking network by 31 March 2003’. This report addresses this milestone and considers future enhancements to the PositioNZ network, in particular the various options for automated and real time processing of GPS data from the network, and makes recommendations for future development.

This report has been compiled by the Surveyor-General, Land Information New Zealand, on behalf of the Geosciences Standing Committee of the Royal Society of New Zealand for the General Assembly of the International Union of Geodesy and Geophysics, Sapporo, Japan, July 2003.

This document presents some of the options and issues associated with the implementation of a deformation model, and proposes a more advanced model that can be used.

The goal of the Vertical Datum Project is to produce a new nationally (and internationally) consistent height reference system for New Zealand. This work has been undertaken in conjunction with the Western Australian Centre for Geodesy at Curtin University of Technology in Perth, Australia.

The following document is a scanned image of the Department of Land and Survey Technical Circular 1973/32 that describes the technical details of the New Zealand Map Grid.

This was the official geodetic datum for New Zealand until 1998. Like most datums of its era it was defined using astronomical observations to establish the coordinates of a relatively small number of fiducial stations. Triangulation was then used to connect these stations together.

In support of LINZ’s PositioNZonLine automated positioning service we have completed a set of work with three major aims.

This paper considers the economic benefits that can be expected to arise from the upgrading of Land Information New Zealand’s (LINZ) network of Continuously Operating Reference Stations (CORS) to Real Time status and the costs of making that network available to the wider market.

This report describes the computation of NZGeoid09, a new gravimetric quasigeoid model for New Zealand, computed at the Western Australian Centre for Geodesy under contract #CON-SE-DSS-TS-45245-3 to Land Information New Zealand (LINZ).

This report identifies the accuracy requirements of current and future users of the datum. It then contrasts a number of options for enhancing NZVD2009 to meet these customer needs before recommending a preferred improvement approach.

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.

With the planned release of the PositioNZ-PP on-line GPS procession tool, LINZ requires updated models to predict forward the position of each of the continuous GPS reference stations of the PositioNZ network and transformation parameters between NZGD2000 and the current GNSS reference frame. This report summarizes the results of Otago University School work in these two areas.

This document describes the format used to publish the New Zealand Geodetic Datum 2000 (NZGD2000) deformation model.

New Zealand Geodetic Datum 2000 (NZGD2000) is aligned with the International Terrestrial Reference Frame 1996 (ITRF96) and referenced to epoch 2000.0. However the NZGD2000 coordinates also include the deformation due to earthquakes since 2000, which have been applied as ""reverse patches"" in the NZGD2000 deformation model.