Tasman District Layers - Page 6

This layer contains the DEM for LiDAR data from the Nelson and Tasman region captured between 2008 and 2015. The Digital Surface Model has not been included because of the varying timeframes of the base datasets. There are also small gaps between most datasets.

• The index tiles are available as layer Nelson and Tasman LiDAR Index Tiles (2008-2015).

• The LAS point clouds and vendor project reports are available from LINZ on request (imagery@linz.govt.nz).

Lidar was captured for Nelson City Council and Tasman District Council by New Zealand Aerial Mapping, Aerial Surveys and AAM New Zealand between May 2008 and December 2015. Data management and distribution is by Land Information New Zealand.

Data comprises:

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

Vertical datum is NZVD2016.

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

Sand: crushed rock, shells etc smaller than 2mm in size

Data Dictionary for sand_poly: 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.

A vertical pole serving as an antenna or antenna support.

Data Dictionary for mast_pnt: 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.

A course laid out for racing

Data Dictionary for racetrack_pnt: 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.

The NSN55-NZGD2000 grid enables the conversion of normal-orthometric heights from the Nelson 1955 local vertical datum directly to New Zealand Geodetic Datum 2000 (NZGD2000) ellipsoidal heights.

NSN55-NZGD2000 is published on a one arc-minute grid (approximately 1.8 kilometres) extending over the benchmarks that nominally define the extent of the Nelson 1955 vertical datum (171.3° E to 174.4° E, 40.4° S to 42.7° S).

The conversion value is represented by the attribute “delta”, in metres.

This grid is a combination of New Zealand Quasigeoid 2016 NZGeoid2016 and the NSN55-NZVD2016 height conversion grid. Where NZGeoid2016 is the reference surface for the New Zealand Vertical Datum 2016 (NZVD2016), while the NSN55-NZVD2016 grid models the difference between the Nelson 1955 vertical datum and NZVD2016 using the LINZ GPS-levelling marks.

More information on converting heights between vertical datums can be found on the LINZ website.

Index Tiles ONLY, for actual orthophotos see layer Tasman 0.3m Rural Aerial Photos (2016-17)

Orthophotography for the Tasman region taken in the flying season (summer period) of 2016-2017. Covering the area centred primarily around Murchison.

Imagery was captured for the ‘Tasman District Council’ by AAM NZ Limited, 6 Ossian St, NAPIER, New Zealand.

Data has subsequently been provided to LINZ and this comprises:
• 338 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 +/-1.2m @ 90% confidence level.

This layer contains the Index Tiles for LiDAR data from the Nelson and Tasman region captured between 2008 and 2015. The Digital Surface Model has not been included because of the varying timeframes of the base datasets. There are also small gaps between most datasets.

• The DEM is available as layer Nelson and Tasman LiDAR 1m DEM (2008-2015).

• The LAS point clouds and vendor project reports are available from LINZ on request (imagery@linz.govt.nz).

Lidar was captured for Nelson City Council and Tasman District Council by New Zealand Aerial Mapping, Aerial Surveys and AAM New Zealand between May 2008 and December 2015. Data management and distribution is by Land Information New Zealand.

Data comprises:

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

Vertical datum is NZVD2016.

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

A large body of water entirely surrounded by land.

S-57 Object Class: Lake

S-57 Acronym: LAKARE

This data was compiled for the use in the scale range 1:350,000 to 1:1,500,000.

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/