Antarctic Geodetic Marks

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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.

5852
77
Updated
26 Sep 2020

This dataset was last updated on LINZ Data Service on 26 Sep 2020.

This dataset provides information about the position, position accuracy, mark name, mark type, condition and unique four letter code for geodetic marks in terms of New Zealand's official geodetic datum for the Ross Dependency.

This dataset only includes marks that are within Antarctica. These positions have been generated using geodetic observations such as precise differential GPS or electronic distance and theodolite angles measurements. The positions are either 2D or 3D depending of the availability of this measurement data.

The source data is from Land Information New Zealand's (LINZ) Landonline system where it is used by Land Surveyors. This dataset is updated daily to reflect changes made in the Landonline.

Accuracy

Geodetic marks with a coordinate order of 5 or less have been positioned in terms of Ross Sea Region Geodetic Datum 2000 (RSRGD2000) using precise differential GPS techniques. Marks with order 6 have been positioned in terms of RSRGD2000 using precise horizontal angles and distance measurements. Lower order marks (order 7 and greater) are derived from lower accuracy measurement techniques or historical datum transformations, and may be significantly less accurate.

The accuracy of RSRGD2000 coordinates is described by a series of 'orders' classifications. Positions in terms of RSRGD2000 are described by three-dimensional coordinates (latitude, longitude, ellipsoidal height). The accuracy of a survey mark is indicated by its order. Orders are classifications based on the quality of the coordinate in relation to the datum and in relation to other surrounding marks. For more information see www.linz.govt.nz/geodetic/datums-projections-heigh...

Note that the accuracy applies at the time the mark was last surveyed. Refer to the web geodetic database for historical information about mark coordinates.

Note also that the existence of a mark in this dataset does not imply that there is currently a physical mark in the ground - the dataset includes destroyed or lost historical marks. The geodetic database provides more information on the mark status, valid at last time it was visited by LINZ.

Layer ID 50789
Data type Vector point
Feature count 472
Primary key id
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Antarctic Geodetic Vertical Marks

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

6308
48
Updated
26 Sep 2020

This dataset was last updated on LINZ Data Service on 26 Sep 2020.

This dataset provides information about the position, height, height datum, height accuracy, mark name, mark type, condition and unique four letter identifier for geodetic marks that have an authoritative height in terms of a vertical datum.
Heights are in datums defined at www.linz.govt.nz/geodetic/datums-projections-heigh....

All marks will have positions in terms of New Zealand’s official geodetic datum for Antarctica, Ross Sea Region Geodetic Datum 2000 (RSRGD2000). The horizontal positions of marks are provided for approximate location purposes only.

This dataset only includes marks that are within the Antarctic region. The height data for these marks have been generated primarily using precise vertical angle and slope distance measurements from datum tide gauges. Some have been generated from levelling data.

The source data is from Land Information New Zealand's (LINZ) Landonline system where it is used by Land Surveyors. This dataset is updated daily to reflect changes made in the Landonline.

Accuracy

The accuracy of normal-orthometric heights are described by height orders.

For more information see www.linz.govt.nz/geodetic/datums-projections-heigh....

Note the accuracy applies at the time the mark was last surveyed - see the geodetic database for historical information about height coordinates.

Layer ID 50788
Data type Vector point
Feature count 279
Primary key id
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

This layer contains all individual vector layers for the Ant50 map series available through the LINZ Data Service. Ant50 is the topographic mapping carried out by LINZ within the Ross Dependency, Antarctica.

This grouping of NZ Ross Dependency Topo50 Data layers will allow you to quickly view and download this collection of related layers.

See the Topographic Data Dictionary for detailed information about each layer, and our background information on the Antarctic Topo50 map series for more information about the data, including update history and release notes.

Updated

NZ Ross Dependency Rock Points (ANT, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

5325
55
Updated
04 Dec 2014

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

An isolated rock or rock formation between high and low tides.

Data Dictionary for rock_pnt: docs.topo.linz.govt.nz/data-dictionary/tdd-class-r...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51171
Data type Vector point
Feature count 1
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ross Dependency Tank Points (ANT, 1:50k)

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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.

5231
49
Updated
04 Dec 2014

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

A structure used for the storage of fluids

Data Dictionary for tank_pnt: docs.topo.linz.govt.nz/data-dictionary/tdd-class-t...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51182
Data type Vector point
Feature count 2
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ross Dependency Scree Polygons (ANT, 1:50k)

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

5268
59
Updated
04 Dec 2014

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

Mountain slope covered with small stones.

Data Dictionary for scree_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-s...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51175
Data type Vector polygon
Feature count 155
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ross Dependency Tank Polygons (ANT, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

5314
61
Updated
04 Dec 2014

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

A structure used for the storage of fluids.

Data Dictionary for tank_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-t...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51183
Data type Vector polygon
Feature count 23
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ross Dependency Runway Polygons (ANT, 1:50k)

Licence

Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

5325
71
Updated
04 Dec 2014

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

The usable surface where aircraft land and take-off

Data Dictionary for runway_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-r...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51168
Data type Vector polygon
Feature count 3
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ross Dependency Ski Tow Centrelines (ANT, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

5332
57
Updated
04 Dec 2014

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

a conveyor system in which carrier units run on wire or rope cables strung between supports for transporting skiers up the slope - the skier remains in contact with the ground whilst being towed up the slope

Data Dictionary for ski_tow_cl: docs.topo.linz.govt.nz/data-dictionary/tdd-class-s...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51187
Data type Vector linestring
Feature count 1
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

NZ Ross Dependency Track Centrelines (ANT, 1:50k)

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

5348
71
Updated
04 Dec 2014

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

A deliberately formed route of a lesser quality than a road

Data Dictionary for track_cl: docs.topo.linz.govt.nz/data-dictionary/tdd-class-t...

This layer is a component of the Ant50 map series. This is the topographic mapping carried out at 1:50,000 scale by LINZ within the Ross Dependency, Antarctica.

Layer ID 51186
Data type Vector linestring
Feature count 65
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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