Surveying in New Zealand

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Thevenot - Hollandia Nova detecta 1644.png
Vincenzo Coronelli00.jpg
First map of New Zealand 1644 and Map of the Pacific Ocean, showing the fictitious great southern continent 1690.
Cook chart of New Zealand.jpg
New Zealand Topography.jpg
Map of New Zealand by James Cook 1770, next to the modern version.
Sketch of Dusky Bay in New Zealand; 1773. RMG F0045.tiff
Plan of the town and part of the settlement of New Plymouth, New Zealand, selected surveyed and delineated by Fred. A.Carrington; late Chief Surveyor of the settlement. RMG F0149.tiff
Sketch of Dusky Sound in New Zealand 1773 and plan of the town and part of the settlement of New Plymouth 1850.

Surveying in New Zealand began with the arrival of Abel Tasman in the mid 17th century. [1] Cartography and surveying have developed in incremental steps since that time till the integration of New Zealand into a global system based on GPS and the New Zealand Geodetic Datum 2000. [2]

Contents

Initially surveys were done by measuring points on the ground and staking out areas, this was quickly followed in the late 1800s by the triangulation method. The New Zealand Institute of Surveyors was established in 1888 after an earlier attempt in 1881. The government then divided the country into 28 'Meridional Circuits' each of which had a known point that other locations could be measured from. The Circuits were further divided into Survey Districts. [3] [4] This system worked well except for surveys that needed to work across neighboring Circuits. To solve this problem the geodetic triangulation of the whole country was performed between 1909 and 1947. This was used for the Geodetic Datum 1949 and New Zealand map grid. [5] [2] This was followed by the use of aerial photography, orthophotos and finally satellite photos. [6] Later the New Zealand Geodetic Datum 2000 superseded the 1949 version. [2] New Zealand topographical maps are sold digitally and in 1:50,000 and 1:250,000 printed versions. [7]

History

Prior to European colonisation, New Zealand was divided into territories of tribes (Iwi) and subtribes (hapu). Boundaries were defined by landmarks which were remembered in chants and oral tradition. [8] [9] The ownership of natural resources was often more important than the land they were on. [10] Land was held by customary possession, gifted, or by conquest and occupation. [8]

Māori had no map-making tradition. Early Polynesian explorers did, however, made stick diagrams to represent the distance and direction to islands. [11] When the early European explorers arrived in New Zealand many of the geographical features had already been named. [12]

Early explorers

The first two European expeditions to map New Zealand (Abel Tasman and James Cook) were both trying to find the hypothesized continent of Terra Australis. They also gave New Zealand its first non Māori place names. [13] This period of time brought about the first maps drawn by Māori. These ranged from local representations in sand to detailed sketchers of the whole South Island. [14]

Cook proved the absences of Terra Australis and made detailed maps of New Zealand. [13] These maps contained two significant errors, showing Stewart Island as a peninsula and Banks Peninsula as an island. [15] The French explorer Dumont d’Urville would quickly correct the later of these claims. [13] [16] The first detailed maps and reports of abundant wildlife brought sealers then whales to New Zealand. [17] Sales of land to European colonists prior to 1840 were not regulated. Disputes arose mainly in areas where tribal possession was unclear.

After the Treaty of Waitangi

Following the Treaty of Waitangi in 1840, all lands of New Zealand came under the dominion of the British crown. The treaty allowed the tribes possession of their customary lands. Europeans wanting to purchase land negotiated through a government commission. If negotiations were successful, the applicant was given a crown grant that gave them ownership under British law. The purchases prior to 1840 were known as old land claims and required to go through the same process. Many of these claims were reduced in size from the original agreements. [18]

Various British schemas for colonization were created and maps created to demarcate the land and attract investment. Also at this time Māori and Europeans were negotiating the sale of land. [19] With the start of the Otago Gold Rush and discovery of the Nelson Mineral Belt geologists and surveyor were hired to map inland New Zealand. [1] [20] By 1855 the Acheron and Pandora had mapped New Zealand's coast line in great detail. [21]

The position of surveyor-general was created in the royal instructions of 1840. The first regulations for surveying were established in 1842, when surveyors were required to deposit their licenses with the surveyor general's office to be returned upon completion of a survey. In 1852, provinces were established and each established a survey department. These were often underfunded and most failed to systemise surveys in their territory, making boundaries unreliable because of gaps and overlaps between abutting surveys. Some small triangulation networks were established, and some cities established survey control points on routes known as standard traverses that surveyors could use as a basis for local surveys. In Otago, true north was determined at six points throughout the province. Local surveys could be linked to these points so that their angle measurements were consistent throughout the district. The districts were known as meridional circuits, a term that has persisted in New Zealand surveying. [18]

In 1875 Major H S Palmer of the Ordnance Survey of Great Britain presented a damning report on the state of the survey system to the New Zealand Parliament. He recommended that a unified map projection was adopted and a single system of reference points was established across the country. In 1876, the provinces were abolished and the survey departments were combined. [22] The chief surveyor of the Otago province, John Turnbull Thomson, was made surveyor-general of the new government survey department. Thompson established meridional circuits throughout the country as well as reorganising the way land records were identified and recorded. By 1880, the small original triangulation networks had been extended and joined throughout New Zealand. [18]

Geodetic surveys

In the years following Major Palmer's report, triangulation had been extended throughout New Zealand, but accuracy had been found wanting. It was not until 1921 that Surveyor-General W.T. Neill began work on a system that would create accurate reference points throughout New Zealand. In 1923, the first baseline was measured near Kaingaroa. From 1930 onward, observations were made at night to improve accuracy. The longest observation was 120 kilometres (75 mi) across Cook Strait. Work continued through World War II as the project was allowed topographical maps for military use to be quickly compiled. The last fieldwork was completed in early 1949, and the system became known as the New Zealand Geodetic Datum 1949. [18]

The 1949 datum was updated in 2000. To ease GPS measurement the new system was slightly shifted to become geocentric (the origin point of the system coincides with the centre of the Earth). It was also designed to be semi-dynamic, to cope better with seismic movement. This system is called the New Zealand Geodetic Datum 2000, and includes the NZ Transverse Mercator projection that topographical maps are published in. [23]

These geodetic activities are responsible for the ubiquitous trig stations that reside mostly at the top of many hills throughout New Zealand.

Queen's Chain

The "Queen's Chain" is a concept in New Zealand property law. It is a strip of public land, usually 20 metres (or one chain in pre-metric measure) wide along rivers, lakes and the coast line. It was designed to prevent land upriver or along a coast being inaccessible to any prospective buyers. The strips are incomplete and their exact modern location can be complex to determine. [24] [25] These strips exist in various forms (including road reserves, esplanade reserves, esplanade strips, marginal strips and reserves of various types) but not as extensively and consistently as is often assumed. [26]

Current system

A vulcanologist takes theodolite measurements on the crater lake of Mt Ruapehu. Theodolite measurement on Ruapehu volcano.jpg
A vulcanologist takes theodolite measurements on the crater lake of Mt Ruapehu.

Cadastral surveying in New Zealand is governed by the Cadastral Survey Act 2002, which defines legal bodies that deal with aspects of the profession. The act devolves power to create specific regulations to the surveyor-general, who periodically issues the surveyor-general's rules for cadastral surveys. The Land Transfer Act 1952 also influences the way surveys are done.

The Torrens system of land registration was introduced in the Land Transfer Act 1870. The act introduced a system where land title is held in a register as opposed to the previous system that registered the document containing the title information. It therefore made it unnecessary to search the history of a title, and made titles indefeasible, meaning that it cannot be claimed by persons other than the registered owner.

A separate system exists in parallel with the general land titles for land held in common by Māori as a tribe. This is controlled by the Te ture Whenua Maori (Maori Land) Act 1993. In 1980, 4.5% of New Zealand land was held in the Māori land system. [8] This does not include land held by Māori individuals in the general land system.

A surveyor who has fulfilled the requirements to legally sign subdivision plans is known as a licensed cadastral surveyor.

Construction surveying is not regulated at the state level in New Zealand. However, matters relating to surveying may require certification by a registered professional surveyor under contract law or local authority regulations.

Surveying in New Zealand uses whole circle (azimuth) bearings. Another oddity is the convention of writing coordinates where the northing is written before the easting, at odds with much of the rest of the world.

See also

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References

  1. 1 2 Maling 1996, pp. 18.
  2. 1 2 3 "New Zealand Transverse Mercator 2000 (NZTM2000) | Land Information New Zealand". LINZ. Retrieved 2019-02-01.
  3. ↑ "Land registration, Glossary LINZ". www.linz.govt.nz. 2018.
  4. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "1. – Modern mapping and surveying – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  5. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "2. – Modern mapping and surveying – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  6. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "6. – Modern mapping and surveying – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  7. ↑ "LINZ topographic-maps". www.linz.govt.nz. 2018.
  8. 1 2 3 Winmill, R.H. (1997). "12 - Maori Land Surveys". In Baldwin, J. (ed.). Law For Surveyors. New Zealand Institute Of Surveyors/University Of Otago.
  9. ↑ Taonui, Rāwiri (2006). "16 Ngāpuhi". In Phillips, Jock (ed.). Māori peoples of New Zealand = Ngā iwi o Aotearoa (repr. ed.). Auckland: D. Bateman. pp. 111–112. ISBN   978-1-86953-622-0. Contains an example of a chant describing an Iwi's lands.
  10. ↑ West, Jonathan (2018). The Face of Nature: An Environmental History of the Otago Peninsula. Otago University Press. ISBN   9781927322383.
  11. ↑ Maling 1996, pp. 128.
  12. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "3. – Tapa whenua – naming places – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  13. 1 2 3 Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "1. – Early mapping – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  14. ↑ Maling 1996, pp. 128-131.
  15. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "Cook's map of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  16. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "2. – Early mapping – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  17. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "3. – Early mapping – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  18. 1 2 3 4 Lee, L.P.; Adam, R.S. (1997). "4 - History of the New Zealand Survey System". In Baldwin, J. (ed.). Law For Surveyors. New Zealand Institute Of Surveyors/University Of Otago.
  19. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "4. – Early mapping – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  20. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "Geological exploration – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  21. ↑ Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "5. – Early mapping – Te Ara Encyclopedia of New Zealand". teara.govt.nz. Retrieved 2019-02-06.
  22. ↑ "LINZ/Our organization/Our Whakapapa". Land Information New Zealand. Retrieved 16 September 2015.
  23. ↑ Jones, A; Blick, G. "Where In The World Are We" (PDF). Land Information New Zealand. Retrieved 13 October 2015.
  24. ↑ "Queen's Chain". Oxford Dictionaries – oxforddictionaries.com. Retrieved 4 July 2017.
  25. ↑ "Truth behind the Queen's Chain". NZ Herald. 12 August 2003. Retrieved 4 July 2017.
  26. ↑ "Te Ara, Encyclopaedia of New Zealand".

Sources

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