Canterbury Earthquake Precise-Levelling Heights (2010, 2011)

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3132
108
Updated
04 Sep 2014

This dataset was last updated on LINZ Data Service on 04 Sep 2014.

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 and Canterbury Earthquake Geodetic Marks (2010, 2011) - Simple

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 on the LINZ website.

Layer ID 51688
Data type Vector point
Feature count 600
Primary key nod_id
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ice Polygons (Topo, 1:250k)

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3000
240
Updated
15 Apr 2019

This dataset was last updated on LINZ Data Service on 15 Apr 2019.

A region of permanent ice

Data Dictionary for ice_poly: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo250 map series. The Topo250 map series provides topographic mapping for the New Zealand mainland and Chatham Islands, at 1:250,000 scale.

Further information on Topo250: www.linz.govt.nz/topography/topo-maps/topo250

Layer ID 50166
Data type Vector polygon
Feature count 1221
Primary key t250_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Canterbury 0.3m Rural Aerial Photos Index Tiles (2014-2015)

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Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

3145
93
Added
15 Sep 2015

This dataset was first added to LINZ Data Service on 15 Sep 2015.

Index Tiles ONLY, for actual orthophotos see layer Canterbury 0.3m Rural Aerial Photos (2014-15)

Orthophotography for the Canterbury region taken in the flying season (summer period) 2014 - 2015. Coverage encompassed the Hurunui, and Kaikoura council areas.

Imagery was captured for the ‘Environment Canterbury’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.

Data comprises:
•1,661 x ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:5,000 tile layout
•Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:5,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.

Imagery supplied as 30cm pixel resolution (0.3m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is +/-0.6m.

Layer ID 52427
Data type Vector polygon
Feature count 1661
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Wharf Centrelines (Topo, 1:250k)

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3047
180
Updated
15 Apr 2019

This dataset was last updated on LINZ Data Service on 15 Apr 2019.

Any structure on a waterfront, designed to make it possible for vessels to lie alongside and take or unload cargo, passengers etc.

Data Dictionary for wharf_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo250 map series. The Topo250 map series provides topographic mapping for the New Zealand mainland and Chatham Islands, at 1:250,000 scale.

Further information on Topo250: www.linz.govt.nz/topography/topo-maps/topo250

Layer ID 50198
Data type Vector linestring
Feature count 3
Primary key t250_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Canterbury Earthquake (14 Feb 2016) Geodetic Marks

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3141
71
Updated
20 Jun 2016

This dataset was last updated on LINZ Data Service on 20 Jun 2016.

Coordinates computed from surveys undertaken after the 14 February 2016 Canterbury earthquake. These should be consistent with any observations made after this earthquake (neglecting any localised deformation such as that due to liquefaction).

For further information about this dataset, see the Canterbury earthquake information.

These coordinates are only provisional. Analysis is ongoing as further data is collected. Coordinates were calculated using SNAP v2.5.33. Stations were constrained using coordinates of distant PositioNZ continuous GNSS stations that were unaffected by the earthquake.

The standard deviations of coordinates are 0.01m horizontally and 0.02m vertically, relative to the PositioNZ network.

Coordinate changes due to the earthquake have been calculated by comparing pre and post-earthquake coordinates. Pre-earthquake coordinates were calculated relative to public and private continuous GNSS stations. These continuous GNSS stations had data processed for several days early in 2016 (before the earthquake). Other pre-earthquake geodetic data was then readjusted with the continuous GNSS data. Note that this means these coordinate changes may differ slightly from those that would be calculated by comparing the post-earthquake coordinates with those currently in the Geodetic Database.

These coordinates are suitable for use in surveys and other geospatial activities in Canterbury and Christchurch.

Layer ID 53322
Data type Vector point
Feature count 149
Primary key nod_id
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Orthophotos 2002-2003

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

2910
277
Added
22 Sep 2011

This dataset was first added to LINZ Data Service on 22 Sep 2011.

LINZ publishes 1:25,000 scale orthophotos of New Zealand from its archive. The New Zealand orthophotos shown are historical and no further orthophotos of New Zealand will be published.

Coverage of 1 pixel is 2.5m x 2.5m

Layer ID 51031
Data type Image/Raster
Resolution 2.500m
Services Web Map Service (WMS), Catalog Service (CS-W), data.govt.nz Atom Feed

Airport/airfield points (Hydro, 1:90k - 1:350k)

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3093
82
Updated
12 Jul 2018

This dataset was last updated on LINZ Data Service on 12 Jul 2018.

An area containing at least one runway, used for landing, take-off, and movement of aircraft.

S-57 Object Class: Airport/airfield

S-57 Acronym: AIRARE

This data was compiled for the use in the scale range 1:90,000 to 1:350,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

Layer ID 50056
Data type Vector point
Feature count 9
ElevationZ coordinates
Primary key fidn
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Railway Centrelines (Topo, 1:500k)

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Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

2783
347
Added
22 May 2011

This dataset was first added to LINZ Data Service on 22 May 2011.

A permanent way having one or more rails which provides a track for trains or trams

Data Dictionary for railway_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo500 data. The Topo500 map series will, when it is created, provide updated topographic mapping for the New Zealand mainland at 1:500,000 scale.

Layer ID 50221
Data type Vector linestring
Feature count 75
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Breakwater Centrelines (Topo, 1:250k)

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

2953
176
Updated
15 Apr 2019

This dataset was last updated on LINZ Data Service on 15 Apr 2019.

A structure built to break the force of waves to protect a beach, harbour or other waterfront facility.

Data Dictionary for breakwater_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo250 map series. The Topo250 map series provides topographic mapping for the New Zealand mainland and Chatham Islands, at 1:250,000 scale.

Further information on Topo250: www.linz.govt.nz/topography/topo-maps/topo250

Layer ID 50152
Data type Vector linestring
Feature count 7
Primary key t250_fid
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Selwyn 0.125m Urban Aerial Photos Index Tiles (2012-2013)

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Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

3004
49
Added
14 Apr 2014

This dataset was first added to LINZ Data Service on 14 Apr 2014.

Index Tiles ONLY, for actual orthophotos see layer Selwyn 0.125m Urban Aerial Photos (2012-13)

Orthophotography for the Selwyn District Council taken during 2012. Coverage encompassed the urban areas within the Selwyn District Council area.

Imagery was captured for the ‘Selwyn District Counci’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.

Data comprises:
•1,970 x ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:1,000 tile layout
•Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:1,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.
Imagery supplied as 12.5cm pixel resolution (0.125m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is +/-0.2m.

Layer ID 51935
Data type Vector polygon
Feature count 1970
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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