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This dataset was last updated on LINZ Data Service on 04 Sep 2014.
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Toitū Te Whenua Land Information New Zealand
Chief Geodesist - National Geodetic Office
04 4600110
155 The Terrace
Wellington
6011
New Zealand
customersupport@linz.govt.nz
resourceProvider
2013-06-25
ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
1.1
2193
Canterbury Earthquake Precise-Levelling Heights (2010, 2011)
The Canterbury region of New Zealand experienced a sequence of significant earthquakes during 2010 and 2011. These earthquakes occurred on 2010-09-04, 2011-02-22, 2011-06-13 and 2011-12-23. Precise-levelling surveys have been carried out throughout Canterbury and Christchurch to re-establish heights after these earthquakes.
**Users may also be interested in the horizontal coordinates derived from GNSS data in the companion layers [Canterbury Earthquake Geodetic Marks (2010, 2011) - Comprehensive](http://data.linz.govt.nz/layer/1588) and [Canterbury Earthquake Geodetic Marks (2010, 2011) - Simple](http://data.linz.govt.nz/layer/1589)**
Horizontal Accuracy (standard deviation) approx 1m.
Vertical Accuracy of Lyttelton Vertical Datum 1937 heights (standard deviation) 0.005m.
Heights generated from precise levelling data undertaken to a misclose standard (mm) of 5*sqrt(k) where k is the distance in kilometres. Precise levelling in the Christchurch area was undertaken after the 23 December 2011 earthquake. Other areas were levelled after the most recent earthquake to have affected heights in that area. Heights therefore represent the position of marks accounting for all four substantial Canterbury earthquakes.
These heights are only provisional. Analysis is ongoing as further data is collected.
Heights calculated using SNAP v2.3.64.
Heights were constrained using the pre-earthquake heights at geodetic codes AC9B, AFAQ, AG32 and B853. GNSS observations and modelling indicates that the height change of these marks was negligible.
Some heights were calculated from precise levelling data provided by Christchurch City Council.
These coordinates are suitable for use in surveys and other geospatial activities in Canterbury and Christchurch.
**For further information about this dataset, see [the Canterbury earthquake information](http://www.linz.govt.nz/survey-titles/canterbury-earthquake/canterbury-earthquake/geodetic-survey-control-coordinates) on the LINZ website.**
To support the geospatial reference frame in post-earthquake Canterbury, including Christchurch.
onGoing
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Toitū Te Whenua Land Information New Zealand
Chief Geodesist - National Geodetic Office
0800 665 463 or +64 4 460 0110
+64 4 472 2244
155 The Terrace
Wellington
6011
New Zealand
customersupport@linz.govt.nz
pointOfContact
asNeeded
*.xml
Unknown
New Zealand
theme
ANZLIC Jurisdictions
Version 2.1
2008-10-29
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-jurisdic.xml#anzlic-jurisdic
ANZLIC the Spatial Information Council
custodian
LAND-Geodesy
HAZARDS-Earthquake
LAND-Cadastre
theme
ANZLIC Search Words
Version 2.1
2008-05-16
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-theme.xml#anzlic-theme
ANZLIC the Spatial Information Council
custodian
unclassified
Copyright 2013 Crown copyright (c)
Toitū Te Whenua Land Information New Zealand and the New Zealand Government.
All rights reserved
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Released under Creative Commons Attribution 4.0 International with:
Following Attribution:
If you publish, distribute or otherwise disseminate this work to the public without adapting it, the following attribution to Toitū Te Whenua Land Information New Zealand should be used.'CC BY 4.0 Toitū Te Whenua Land Information New Zealand'
If you adapt this work in any way or include it in a collection, and publish, distribute or otherwise disseminate that adaptation or collection to the public, the following attribution to Toitū Te Whenua Land Information New Zealand should be used.'Contains data sourced from the LINZ Data Service and licensed for reuse under CC BY 4.0.'
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textTable
eng
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https://data.linz.govt.nz/layer/51688-canterbury-earthquake-precise-levelling-heights-2010-2011/
dataset
dataset
The estimated accuracy is 0.005m vertically.
This data is identical to that contained in the csv file at:
http://www.linz.govt.nz/sites/default/files/survey-titles/cadastral-surveying/canterbury-earthquake/information-surveyors/canterbury_eq_linz_levelled_heights_v1.1.csv
unclassified
Copyright 2013 Crown copyright (c)
Toitū Te Whenua Land Information New Zealand and the New Zealand Government
copyright
Released under Creative Commons Attribution 4.0 International
license