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Canterbury - Hawarden LiDAR 1m DSM (2015)

This layer contains the DSM for LiDAR data from the Hawarden area captured in 2015.

The DEM is available as layer [Canterbury - Hawarden LiDAR 1m DEM (2015)]( http://data.linz.govt.nz/layer/3550 ).

The index tiles are available as layer [Canterbury - Hawarden LiDAR Index Tiles (2015)]( http://data.linz.govt.nz/layer/3584 ).

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 on 1 April 2015, under survey name Hurunui. The datasets were generated by Aerial Surveys and their subcontractors. The survey area includes the Hawarden township area. 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


Planned pulse density is 1.3 pulses/square metre.


Vertical accuracy specification is per the ICSM LiDAR Acquisition Specifications and Tender Template NZ Version March 2011.


Vertical datum is NZVD2016.

Simple

Identification info

Date (Creation)
2015-04-01
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/53551-canterbury-hawarden-lidar-1m-dsm-2015/

Resource lineage

Statement

Data Acquisition:

Airborne Laser Scanner (ALS) data was acquired from a fixed wing aircraft on 1 April

2015, using Aerial Surveys' Optech Orion H300 LiDAR system.


Survey Specification:

 Scanner: Optech Orion H300

 Flying height: 1200m AMGL

 Scan Angle: +/- 20 degrees

 Scan Frequency: 34Hz

 Pulse Rate 75kHz

 Swath Overlap: 30%

 Points Per Sqm: 1.3


Data processing:


The LiDAR sensor positioning and orientation (POS) was determined using the collected GPS/IMU datasets and Applanix POSMMS software. This work was all undertaken in NZGD2000 coordinate system using the data collected from the following basestations:


Project: Ecan Hawarden

Date of Capture: 1/4/15

Base Station Type/Owner: Global Surveys

Bench Mark: GSAM

Base Station Position: 43 09 06.47086 S 172 43 45.04334 E 66.747 Ell Height

Ant Height : 0.00 Phase Center

Output LAS Projection: TM2000

Height: WGS84 Ellipsoid


Validation was carried out using the guidelines contained in the ICSM specification template as required for this program.


Vertical Accuracy Validation:

The height accuracy of the LiDAR points was checked using check points collected during the ground control survey


Horizontal Accuracy Validation

The positional accuracy of the LiDAR data has been checked by overlaying Sounds Surveying Ltd surveyed data over the LiDAR data displayed coded by intensity. The data was found to fit well in position.


All product deliverables were initially supplied in terms of NZTM and Lyttelton 1937 height datum.


Classification of the point cloud followed the classification scheme below:

0 - Created, never classified

2 - Ground

12 - Flight line overlap points

14 - Above_Ground


Re-processing:

In 2016 the data was reprocessed by Aerial Surveys for LINZ relative 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
56bf73d2-a98a-9f60-d87e-34e2688383e1

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)
2017-03-21

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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