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Canterbury - Hurunui Rivers LiDAR 1m DEM (2013)

This layer contains the DEM for LiDAR data from the Hurunui District captured in 2013.

The DSM is available as layer [Canterbury - Hurunui Rivers LiDAR 1m DSM (2013)]( http://data.linz.govt.nz/layer/3580 ).

The index tiles are available as layer [Canterbury - Hurunui Rivers LiDAR Index Tiles (2013)]( http://data.linz.govt.nz/layer/358 1).

The LAS point cloud and vendor project reports are available from [OpenTopography]( https://portal.opentopography.org/datasets?loc=New%20Zealand ).


Lidar was captured for Environment Canterbury Regional Council by Aerial Surveys in May 2013. The datasets were generated by Aerial Surveys and their subcontractors. The survey area includes Hanmer Springs, Hanmer Plain, Waiau, Waiau River, Hurunui River, Pahau River, and Culverden. Data management and distribution is by Toitū Te Whenua Land Information New Zealand.


Data comprises:

•DEM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout

•DSM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout

•Point cloud: las tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout


Data was collected at >1 pulse/square metre pulse density. Attributes include:

-Elevation

-Intensity values

-Return number

-Adjusted GPS time

-Classification


Vertical datum is NZVD2016

Simple

Identification info

Date (Creation)
2013-05-30
Date (Publication)
2017-03
Status
Completed
Point of contact
Role Organisation Electronic mail address
Point of contact

Toitū Te Whenua Land Information New Zealand

customersupport@linz.govt.nz

Spatial representation type
Grid

Spatial resolution

Equivalent scale

Denominator
1000
Topic category
  • Elevation
  • Imagery base maps earth cover

Extent

Geographic identifier
nzl

Title

ANZMet Lite Country codelist

Date (Publication)
2009-03-31
Edition

Version 1.0

Edition date
2009-03-31
Citation identifier
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-country.xml#Country

Cited responsible party
Role Organisation Electronic mail address
Custodian

ANZLIC the Spatial Information Council

Extent

Extent

N
S
E
W


Resource format

Title

*.xml

Date
Edition

Unknown

ANZLIC Jurisdictions
  • New Zealand

ANZLIC Search Words
  • LAND-Topography

  • LAND-Cover

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Access constraints
Copyright

Resource constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Access constraints
License

Resource constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Use constraints
Copyright

Resource constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Use constraints
License
Language
English
Character encoding
UTF8

Distribution Information

OnLine resource

https://data.linz.govt.nz/layer/53582-canterbury-hurunui-rivers-lidar-1m-dem-2013/

Resource lineage

Statement

Data Acquisition:

Airborne Laser Scanner (ALS) data was acquired from a fixed wing aircraft between 12 and 30 May 2013, using Aerial Surveys' Optech ALTM 3100EA LiDAR system.


Survey Specification:

 Scanner: Optech ALTM 3100EA

 Flying height: 1250m AMGL

 Scan Angle: +/- 14.9 degrees

 Scan Frequency: 47.3Hz

 Pulse Rate 70kHz

 Swath Overlap: 35%

 Points Per Sqm: 1.24


Data processing:

The LiDAR sensor positioning and orientation (POS) was determined using the collected GPS/IMU datasets and Applanix POSPac software.


The POS data was combined with the LiDAR range files and used to generate LIDAR point clouds in NZTM and ellipsoidal heights. This process was undertaken using Optech LMS LiDAR

processing software. The data was checked for completeness of coverage. The relative fit of data in the overlap between strips was also checked.


The height accuracy of the ground classified LiDAR points was checked using open land-cover

survey check site data collected by C & R Surveyors . This was done by calculating

height differences statistics between the checkpoints and a TIN of the LiDAR ground points.


The standard deviation statistic is 0.03 m , a RMS of 0.03m and Average of 0.01m for Middle Waiau.

The standard deviation statistic is 0.03 m , a RMS of 0.07m and Average of -0.07m for Upper Hurunui, Pahau & Waitohi Areas.

The standard deviation statistic is 0.03 m , a RMS of 0.04m and Average of 0.01m for Hanmer Basin.

The standard deviation statistic is 0.03 m , a RMS of 0.06m and Average of -0.053m for Lower Hurunui, & the standard deviation statistc is 0.03, a RMS of 0.05m and Average of -0.03 for Lower Waiau.


The positional accuracy of the LiDAR data has been checked by overlaying C & R Surveyors

Ltd surveyed data over the LiDAR data displayed coded by intensity. The data was found to fit

well in position.


The point cloud data was classified with TerraSolid LiDAR processing software into ground and above ground returns using automated routines tailored to the project landcover and terrain.


The point cloud data was classified with TerraSolid LiDAR processing software into ground and above ground returns using automated routines tailored to the project landcover and terrain.


Classification of the point cloud followed the modified ASPRS classification scheme below:

0 - Created, never classified

2 - Ground

9 - Water

14 - Above_Ground

15 - River Stream points

17 - Water Body points


Re-processing:

In 2016 the data was reprocessed by Aerial Surveys for LINZrelative to the NZVD2016 vertical datum, and supplied as 1:1000 nominal scale (2500 720m high x 480m wide subtiles per full NZ Topo50 sheet). Lakes and rivers were hydroflattened in the bare earth digital elevation model.The deliverables to LINZ were:


1m gridded bare earth digital elevation model (DEM)

1m gridded digital surface model (DSM)

Classified point cloud


Data hosted by OpenTopography was re-classified: the Above_Ground (14) points were reclassified as Unassigned classification (1)

Hierarchy level
Dataset
Other

dataset

Reference System Information

Reference system identifier
2193

Metadata constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Access constraints
Copyright

Metadata constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Access constraints
License

Metadata constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Use constraints
Copyright

Metadata constraints

Use limitation

Released under Creative Commons Attribution 4.0 International

Creative Commons Attribution 4.0 International

Link: http://data.linz.govt.nz/license/attribution-4-0-international/


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"

Use constraints
License

Metadata

Metadata identifier
51070b23-7e8b-6103-12f5-1416e0a948ed

Language
English
Character encoding
UTF8
Contact
Role Organisation Electronic mail address
Point of contact

Toitū Te Whenua Land Information New Zealand

customersupport@linz.govt.nz

Type of resource

Resource type
Dataset
Name

dataset

Date info (Revision)
2017-05-11

Metadata standard

Title

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Edition

1.1

 
 

Spatial extent

N
S
E
W


Keywords

ANZLIC Jurisdictions
New Zealand
ANZLIC Search Words
LAND-Cover LAND-Topography

Provided by

Access to the catalogue
Read here the full details and access to the data.


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