NZ Ross Dependency Topo50 Data

Polygon for each Topo50 map sheet in the Ross Dependency, Antarctic holding extents of each sheet, it's sheet code, name, edition, and revision statement. This is the same information that is printed on each ANTTopo50 map.

A fixed signal, mark or light erected for the guidance of mariners or aeroplane pilots.

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

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.

A relatively permanent walled and roofed construction.

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

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.

A naturally formed, subterranean open area or chamber.

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

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.

A high, steep or overhanging face or rock. Can be rock.

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

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.

The line forming the boundary between the land and sea, defined by mean high water.

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

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.

An imaginary line that connects points of equal height value eg the elevation of the land surface above or below a vertical datum, in this case of LINZ topographic mapping, this is Mean Sea Level.

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

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.

A crack or fissure in a glacier resulting from stress; may be 20m wide and 45 metres deep and several hundred metres long.

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

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.

A closed depression formation forming a closed loop and representing an area of lower ground of less than the vertical interval.

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

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.

Descriptive text; object used to hold text.

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

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.

Disturbed ice area edge; designated where the presence of seracs, criss-crossed crevasses and skauk are in such numerous quantities that is is difficult to separate one ice formation from another.

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

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.

Fast ice; any sea ice that forms along and remains attached to the coast or that forms between grounded icebergs or is attached to the bottom in shallow water.

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

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.

Geographic name holds the proper noun of certain objects within the Topo databases. Geographic_name does not apply to roads, railway lines, or descriptive text - eg 'Brunner Mine' would be a Geographic_name but 'mine disused' is held in the descriptive_text feature

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

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.

Glacial lake boundary; a lake fed by meltwater, or forming in glacier ice because of differential melting, or one confined by a morainal dam, or held in a bedrock basin produced by glacial erosion.

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

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.

A height above a vertical datum, represented on a map by a dot locator with the elevation printed beside the dot. Unlike trigonometrical stations, spot heights are not identifiable on the ground

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

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.

An area set aside for the landing of helicopters

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

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.

A place where some historic activity has been conducted, or where some historic object is located.

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

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.

Ice cliff edge; any vertical wall of ice eg. a very steep surface bounding a glacier or mass of shelf ice; the cliffed edge of an ice sheet or glacier on a land surface or the cliffs at the seaward floating edge of a glacier or ice shelf.

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

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.

A region of permanent ice

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

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.

Large area of permanent sea ice.

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

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.

Ice stream; a current of ice in an ice sheet or ice cap that flows more rapidly than the surrounding ice,usually flowing to the ocean or to an ice shelf and not constrained by exposed rock.

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

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.

A large, massive piece of floating glacier ice of any shape, detached from the front of a glacier into a body of water; extends more than 5m above sea level.

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

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.

Area of dry or relatively dry land surrounded by water or low wetland

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

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.

Any standing body of fresh inland water.

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

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.

A vertical pole serving as an antenna or antenna support.

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

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.

Meltwater_stream; a flow of water that is supplied by melting glacier ice; a "glacial stream" often grayish-white in colour because of the "rock flour"resulting from glacial erosion.

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

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.

An accumulation of boulders, stones or other debris carried and deposited by a glacier.

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

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.

Any formed all weather route suitable for the passage of any vehicle.

Data Dictionary for road_cl: 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.

An isolated rock formation that constitutes a prominent or unusual landmark

Data Dictionary for rock_outcrop_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.

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.

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.

Low point or opening between hills or mountains

Data Dictionary for saddle_pnt: 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.

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

Data Dictionary for sand_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.

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.

A hole, or funnel shaped cavity made in the earth by the action of water on the soil, rock or underlying strata

Data Dictionary for sinkhole_pnt: 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.

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.

A region of permanent snow.

Data Dictionary for snow_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.

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.

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.

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.

Any structure on a waterfront, designed to make it possible for vessels to lie alongside and take or unload cargo, passengers etc.

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

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.

A mill or other machine that runs on the energy generated by a wheel of adjustable blades or flats rotated by the wind

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

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.