NZ Topo - object class ice_poly

This page describe the ice_poly object class used to represent objects in the NZTopo topographic database.


A region of permanent ice

Topo50 description

Permanent snow and ice is defined as that which remains after the summer thaw. Areas of ice and snow were defined by the Department of Science and Industrial Research (DSIR) during the mid 1980’s over the entire country. Some areas have been updated from studies undertaken at the University of Otago . To keep the database in line with international entity specifications areas of snow and ice will be captured using both snow_poly and ice_poly objects.

Topo250 description

Only those significant by their size are held in the Topo250 data and shown on the Topo250 printed maps; these are a generalised subset of those shown on the Topo50 series

Representation specification

Representation specification showing ice_poly

Click to enlarge image

See also: snow_poly

Class attributes

Object classice_poly
Entity classICEFIELD
Additional entity classNot applicable
Object inheritancesimple_area
Entity sourceUS Standard Entity
Map series Topo250 Ant50 Topo50
LSLIFF object class313

Object attributes

This object class does not have attributes.

Change log

Feature versionRevisedDescription
62012-08-28Updated map image and aerial view; added representation specification and example feature photographs
52012-08-28Added scale-specific definitions
42008-04-10Removed reference to seed and void objects
32001-11-23Unspecified update
11999-03-01intial status