DOI: https://doi.org/10.5069/G91J97WQ
OT Collection ID: OT.022020.2193.3
OT Collection Name: Christchurch and Ashley River, Canterbury, New Zealand 2018-2019
Short Name: NZ18_Canterbury
Collection Platform: Airborne Lidar

----------------------------------------------------------

Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.022020.2193.3
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.022020.2193.3


----------------------------------------------------------

Collection Overview: Lidar was captured for Environment Canterbury Regional Council by Aerial Surveys between July 2018 to March 2019. The dataset was generated by Aerial Surveys and their subcontractors. The survey area includes Christchurch City and the Ashley River, as well as the surrounding area. Data management and distribution is by Land Information New Zealand.
Prepared DEM and DSM files are available through the LINZ Data Service:

Christchurch and Ashley River, Canterbury, New Zealand 2018-2019 Digital Elevation Model
Christchurch and Ashley River, Canterbury, New Zealand 2018-2019 Digital Surface Model
Christchurch and Ashley River, Canterbury, New Zealand 2018-2019 Raster Tile Index


Dataset Acknowledgement: Released under Creative Commons CC By 4.0 (https://creativecommons.org/licenses/by/4.0/). Attribution Required for Copies: 'Copyright in this work is owned by Environment Canterbury Regional Council'. Attribution Required for Derivative works: 'Copyright in the underlying dataset from which this work has been derived is owned by Environment Canterbury Regional Council'.

Dataset Citation: Environment Canterbury Regional Council, LINZ (2020).  Christchurch and Ashley River, Canterbury, New Zealand 2018-2019.  Collected by Aerial Surveys, distributed by OpenTopography and Land Information New Zealand (LINZ).  https://doi.org/10.5069/G91J97WQ. Accessed: 2024-04-19

Use License: CC BY 4.0

Dataset Keywords: ashley river, christchurch, canterbury, south island, new zealand, linz, aerial surveys, lidar

Survey Date: 07/20/2018 - 03/01/2019
Publication Date: 02/26/2020

----------------------------------------------------------

Data Provider and Roles:
	1. Aerial Surveys
	Role: Collector
	Url: http://www.aerialsurveys.co.nz/

	2. Environment Canterbury Regional Council
	Role: Funder
	Url: http://www.ecan.govt.nz/

	3. Land Information New Zealand
	Role: Partner
	Url: https://www.linz.govt.nz/


----------------------------------------------------------

Total number of points: 3,903,902,999 pts

Area: 663.35 km^2

Point Density: 5.89 pts/m^2

Classifications: 
	Class 1 - Unclassified: 961,653,107
	Class 2 - Ground: 1,165,204,207
	Class 7 - Low Point (low noise): 53,150,830
	Class 9 - Water: 117,266,991
	Class 12 - Overlap/Reserved: 1,606,627,864
Coordinates System: 
	Horizontal: NZTM2000 NZGD2000 Meters [EPSG: 2193]
	Vertical: NZVD2016 [EPSG: 7893]

Survey Report: https://cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/NZ18_Canterbury_metadata.zip

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/NZ18_Canterbury.html

----------------------------------------------------------

Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.022020.2193.3&download=true

Dataset Spatial Bounds:
	North: -43.1944310520036°
	South: -43.6767204816647°
	East: 172.816622341522°
	West: 172.387969725608°