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Normal-orthometric heights
There are 2 main height systems used in New Zealand, with normal-orthometric being the most common. This takes into account the quasigeoid and the influence of gravity to support accurate elevation measurements.
Guidance
Geodetic
0
Standard for Ross Sea Region Geodetic Datum 2000 Projections - LINZS25008
The standard defines several map projections in terms of the Ross Sea Region Geodetic Datum 2000. These projections are used by Land Information New Zealand for topographic mapping in the Ross Sea Region of Antarctica. They can also be used by other people and organisations for the provision and display of geospatial data within the Ross Sea Region.
Resource
Geodetic
0
Background to LINZS25008 Standard for Ross Sea Region Geodetic Datum 2000 Projections
This document describes the background to the Ross Sea Region Projections standard and also describes other projections that are used in Antarctica.
Resource
Geodetic
0
Standard for New Zealand Geodetic Datum 2000 - LINZS25000
A national geodetic system and its associated national survey control system are fundamental components of a nation’s infrastructure.
Resource
Geodetic
0
Standard for New Zealand Geodetic Datum 2000 Projections: Version 2 - LINZS25002
This standard defines several map projections in terms of the New Zealand Geodetic Datum 2000. These projections can be used for the provision and display of cadastral, topographic, and hydrographic data for New Zealand, its offshore islands, and continental shelf.
Resource
Geodetic
0
Extra protection for permanent reference marks (PRMs)
Important survey marks can be disturbed, damaged or destroyed simply because people are unaware of them. Marks below ground level are most at risk as they are practically invisible to those working nearby.
Page
Geodetic
0
Boris Kirov - Business Intelligence Analyst at WCC
Profile - Boris Kirov
Page
Geodetic
0
Erica Black - Data Consultant at Critchlow
Profile - Erica Black
Page
Geodetic
0
Jana Kaeppler - GIS Officer at Mackenzie District Council
Profile - Jana Kaeppler
Page
Geodetic
0
Scott Tansley - Geospatial Senior Consultant at Statistics New Zealand
Profile - Scott Tansley
Page
Geodetic
0
Hannah Reid - Geospatial careers profile
Hannah is a Master of Science in Remote Sensing student at Massey University (Turitea Campus, Palmerston North).
Page
Geodetic
0
Geodetic Marks app
The LINZ Geodetic Marks app allows users to navigate to geodetic marks, access mark details, submit updated mark photos, and find key non-boundary marks that may need to be protected when engaging in earthworks.
Page
Geodetic
0
Obtaining New Zealand Vertical Datum 2016 (NZVD2016) Heights
New Zealand Vertical Datum 2016 (NZVD2016) heights can be obtained anywhere in New Zealand, including the offshore islands. Published NZVD2016 heights are available in Landonline and the Geodetic Database. Calculated heights can be derived from GNSS (global navigation satellite system) observations. Transferred heights can be obtained using traditional heighting techniques.
Guidance
Geodetic
0
GIS student and graduate profiles
New Zealand needs people with the skills and understanding to unlock the potential of location information. There are Geographic Information System (GIS) related courses being offered from Whangarei to Invercargill, and students are experiencing big benefits from adding GIS to their study.
Page
Geodetic
0
SouthPAN
SouthPAN (Southern Positioning Augmentation Network) will improve the accuracy and reliability of satellite-based positioning systems in New Zealand and Australia.
Page
Geodetic
0
Post-earthquake co-ordinates
Clear and complete referencing of coordinates is important because ongoing movement can mean that they change several times after an earthquake.
Guidance
Survey
Geodetic
0
New Zealand Quasigeoid 2016 (NZGeoid2016)
The reference surface for New Zealand Vertical Datum 2016 (NZVD2016) is New Zealand Quasigeoid 2016 (NZGeoid2016). NZGeoid2016 is a gravity derived model, which can be used to determine NZVD2016 heights anywhere in New Zealand and its offshore islands.
Guidance
Geodetic
0
Geodetic presentations
Selected presentations relating to geodesy in New Zealand by staff from Toitū Te Whenua.
Guidance
Geodetic
0
Chloe Samaratunga - Geospatial careers profile
Chloe Samaratunga is studying for a Bachelor of Advanced Science with Auckland University of Technology (AUT).
Page
Geodetic
0
Kasey Oomen - Geospatial graduate profile
Kasey Oomen is a resilience advisor at Toitū Te Whenua Land Information New Zealand.
Page
Geodetic
0
Managing the geodetic control network
Find out more about geodetic control network development, maintenance and protection.
Page
Geodetic
0
Ross Sea Region projections
Projections are selected so that they best represent an area of the globe on a flat surface. There are separate projections for McMurdo Sound, Borchgrevink Coast, Pennell Coast, and the Ross Sea.
Guidance
Geodetic
0
RINEX data archive
The PositioNZ RINEX data archive collects, stores and provides access to data from a network of continuously recording GNSS (global navigation satellite system) receivers located around New Zealand, including the Chatham Islands and Antarctica.
Page
Geodetic
0
Cadastral Horizontal Control Network
The CHN provides the street-level control marks that are used by surveyors to connect to and orient cadastral surveys in terms of the official geodetic datum (NZGD2000).
Page
Geodetic
0
Basic Geospatial Network
The BGN provides a national coverage of control marks (including the offshore islands and Antarctica) to enable users to efficiently connected to official geodetic and vertical datums.
Page
Geodetic
0
About trig stations and geodetic marks
The physical part of New Zealand’s geodetic system is a network of geodetic marks that are used as reference points for surveys.
Guidance
Geodetic
0
Vertical datums
Vertical datums define a reference surface for measuring elevations and depths, ensuring consistency in height measurements.
Guidance
Geodetic
0
Meridional circuits
Meridional circuits divide the country into a set of survey regions, used to define a local projection for mapping purposes. The Cadastral Survey Rules 2021 require that the NZGD2000 (New Zealand Geodetic Datum 2000) Transverse Mercator 2000 Meridional Circuit projections are used for cadastral surveyors.
Guidance
Geodetic
0
North and South Island Yard Grids (NIYG, SIYG)
The North Island Yard Grid and South Island Yard Grid were the projections for the 1:63,360 (inch-to-the-mile) topographic mapping in New Zealand between 1942 and 1973.
Guidance
Geodetic
0
Projections
Projections are used to transform a curved surface into a flat map, making locations easier to define. There are 5 official map projections currently used in New Zealand, and 4 that are no longer used.
Guidance
Geodetic
0
Tiers, classes and orders
Coordinate and height accuracy values categorised in 3 ways: network accuracy is described by its tier, local accuracy is described by class, and combined accuracy is its order.
Guidance
Geodetic
0
Ross Sea Region Geodetic Datum 2000 (RSRGD2000)
The Ross Sea Region Geodetic Datum 2000 (RSRGD2000) is the official geodetic datum used to define positions for the Ross Sea region of Antarctica.
Guidance
Geodetic
0
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