Feature Types

Search restricted to attribute 1045 - Date_Capture

Use link on Feature Type Code to see details of that Feature Type.

Code Feature Type Definition
128 Blue ice Bands of transparent ice containing no air bubbles, its mass acquiring a blueish tint.
148 Coastline A line or zone where the land meets the sea or some other large expanse of water. This includes the boundaries of continent and island feature types.
149 Contaminated area Any site or region that is damaged, harmed or made unfit for use by the introduction of unwanted substances, particularly microorganisms, chemicals, toxic and radioactive materials and wastes.
158 Crevasse A fissure formed in a glacier. Crevasses are often hidden by snow bridges.
159 Crevasse field An area of crevasses.
160 Crevasse field boundary The boundary line of a crevasse field.
166 Doline Large oval-shaped depressions in ice shelves and glaciers. Adopted from Karst.
168 Drift tail A long bank of snow formed by the wind in the lee of the disturbance.
179 Fish Cold-blooded aquatic vertebrates.
184 Flying Bird Feathered vertebrate with two wings and two feet.
190 Frost crack A fissure in the ice formed by frost.
196 Glacier A mass of snow and ice continuously moving from higher to lower ground or, if afloat, continuously spreading.
197 Glacier boundary The approximate boundary of a mass of flowing ice.
199 Grounding line The boundary or zone where the continental ice is grounded and where it floats.
203 Hillock A local high point of an ice sheet or ice cap
208 Ice The solid state of water, monomineral rock.
209 Ice boundary The boundary of the ice.
210 Ice field Flat glaciated area, underlying topography is not completely levelled out
211 Ice foot A narrow fringe of floating ice attached to the coast and remaining after annual landfast sea ice has broken free.
212 Ice fringe A very narrow ice piedmont, extending less than about 1 km inland from the sea.
189 Ice front The vertical cliff forming the seaward face of an ice shelf or other floating glacier, varying in height to 2 to 50 m above sea level.
213 Ice rise A mass of ice resting on rock and surrounded either by an ice shelf, or partly by an ice shelf and partly by sea. No rock is exposed and there may be none above sea level. Ice rises often have a dome-shaped surface. The largest known is about 100 km across.
214 Ice rise boundary The boundary of the ice rise.
282 Ice rumple A locally grounded area of ice shelf which is overridden by an ice sheet. ice rumples are distinguished by crevassing together with a rise in the surface. The criterion for distinguishing between ice rumples and an ice rise is the direction of ice movement as shown by the crevasse pattern. ice may be deflected or even halted by ice rumples, but in an ice rise, movement is independent of that of the ice shelf and, being inthe main radial, will in places oppose it. No known ice rumples rise more than 50 m above ice shelf surface level, whereas ice rises may be up to several hundred metres high.
283 Ice rumple boundary The boundary of the ice rumple.
297 Ice sheet A mass of ice and snow of considerable thickness and large area. Ice sheets may be resting on rock or floating. Ice sheets of less than about 50,000 square km resting on rock are called ice caps.
298 Ice shelf A floating ice sheet of considerable thickness attached to a coast. Ice shelves are usually of great horizontal extent and have a level or gently undulating surface. They are nourished by the accumulation of snow and often by seaward extension of land glaciers. Limited areas may be aground. The seaward edge is termed an ice front.
598 Ice shelf boundary The boundary of the ice shelf.
215 Ice stream Part of an ice sheet in which the ice flows more rapidly and not necessarily in the same direction as the surrounding ice. The margins are sometimes clearly marked by a change in direction of the surface slope, but may be indistinct.
216 Ice thickness A point locality at which the ice thickness to bedrock has been measured.
217 Iceberg A massive piece of ice of greatly varying shape, more than 5 m above sea-level, which has broken away from a glacier (or an ice shelf), and which may be afloat or aground. Icebergs may be described as tabular, dome-shaped, sloping, pinnacled, weathered or glacier bergs (an irregularly shaped iceberg). Icebergs are not sea ice. They originate from the ice mass of the Antarctic continent that has accumulated over many thousands of years. When they melt they add fresh water to the ocean.
218 Icefall The portion of a glacier at a point of steep descent, segmented by many transverse crevasses into separate blocks.
220 Introduction of animal species Animals which have been translocated by human agency into lands or waters where they have not lived previously, at least during historic times. Such translocation of species always involves an element of risk if not of serious danger. Newly arrived species, depending on their interspecific relationships and characteristics, may act as or carry parasites or diseases, prey upon native organisms, display toxic reactions, or be highly competitive with or otherwise adversely affect native species and communities.
221 Introduction of plant species Plants which have been translocated by human agency into lands or waters where they have not lived previously, at least during historic times. Such translocation of species always involves an element of risk if not of serious danger. Newly arrived species may be highly competitive with or otherwise adversely affect native species and communities. Some may become a nuisance through sheer overabundance. They may become liable to rapid genetic changes in their new environment. Many harmful introductions have been made by persons unqualified to anticipate the often complex ecological interaction which may ensue. On the other hand many plants introduced into modified or degraded environments may be more useful than native species in controlling erosion or in performing other positive functions.
388 Lagoon Enclosed area of salt or brackish water separated at times from the sea by a more or less effective obstacle such as a beach bar, or shelf, cf. lake.
234 Mammal Any animal of the Mammalia, a large class of warmblooded vertebrates having mammary glands in the female, a thoracic diaphragm, and a four-chambered heart. The class includes the whales, carnivores, rodents, bats, primates, etc.
239 Mapping extent The extent of the area that was mapped to create a dataset.
245 Moraine A mound, ridge, or other distinct accumulation of unsorted, unstratified glacial drift, predominantly till, deposited primarily by direct action of glacier ice, in a variety of topographic landforms that are independent of control by the surface on which the drift lies.
397 Nunatak A small mountain, rocky crag or outcrop projecting from a glacier, ice shelf or snowfield.
249 Outcrop A detached rock mass, or group or rocks, distinctively shaped by erosion and weathering.
253 Patterned ground Well-defined features, such as circles, polygons, nets, steps and stripes, characteristic of areas at some time subject to intensive frost action
254 Penguin Sea-fowl of southern hemisphere with wings developed into scaly flippers with which it swims under the water.
259 Plant species Species belonging to the plant kingdom.
261 Polynya Any water in pack ice or fast ice other than a lead, not large enough to be called open water. If a polynya is found in the same region every year, e.g. of the mouths of big rivers, it is called a recurring polynya. A temporary small clearing in pack ice which consists of small floes and brash in continuous local movement is called an unstable polynya; an opening which is flanked by large floes and therefore appears to be relatively stable is called a stable polynya. When frozen over, a polynya becomes an ice shylight from the point of view of the submariner.
276 Reptile A class of terrestrial vertebrates, characterized by the lack of hair, feathers, and mammary glands; the skin is covered with scales, they have a three chambered heart and the pleural and peritoneal cavities are continuous.
277 Rift A long narrow fissure, usually extending parallel to the ice front; a line of weakness in an ice shelf
279 Rock Any aggregate of minerals that makes up part of the earth's crust. It may be unconsolidated, such as sand, clay, or mud, or consolidated, such as granite, limestone, or coal.
280 Rock boundary The boundary line of a lithological unit, where not defined by a fault, dyke or vein.
288 Sand A loose material consisting of small mineral particles, or rock and mineral particles, distinguishable by the naked eye; grains vary from almost spherical to angular, with a diameter range from 1/16 to 2 millimeters.
553 Satellite Image Satellite image footprint. Each footprint represents one image taken from a sensor on a satellite taken from space.
452 Scientific Site A location of scientific study site or where a sample was taken. It also includes the location of scientific markers to relocate sites.
291 Scree A slope or base of a cliff consisting of broken rock fragments.
292 Scree boundary The boundary of the scree.
293 Sea A body of salty water that covers much of the earth.
294 Sea ice Any form of ice found at sea which has originated from the freezing of sea water.
296 Shear zone A linear zone (narrow compared to its length) where there is evidence of shear stress in the form of many parallel fractures in the ice, usually at the margins of major ice streams
300 Shoal A sandbank or sandbar that makes the water shallow and presents a navigation hazard.
301 Shore Land that adjoins sea or large body of water
549 Site record To record site information relating any sort of study
303 Snow Atmospheric precipitation of ice crystals.
304 Snow bank A large drift or wall of snow.
305 Snow boundary The boundary line of the snow.
306 Snow bridge An arch formed by snow which has drifted across a crevasse, forming first a cornice, and ultimately a covering which may completely obsure the opening.
307 Snow patch An isolated area of snow, lying above or below the regional snow line, which may last throughout the summer, and is composed of firn.
314 Storage A temporary structure or collection of goods e.g shipping containers, shipping goods, gravel stockpile.
315 Strand crack A fissure at the junction between an inland ice sheet, ice piedmont or ice rise and an ice shelf, the latter being subject to the rise and fall of the tide.
322 Thaw hole Vertical hole in floating ice formed when a puddle melts through to the underlying water.
324 Tide crack The fissure at the line of junction between immovable icefoot or icewall and fast ice, the latter being subject to the rise and fall of the tide.
325 Tongue A projection of the ice edge up to several km in length caused by wind and current.
326 Tongue boundary The boundary of the tongue.
340 Ventifact Ice which is stone worn, polished, or faceted by windblown sand.
341 Volcanic cone A conical mass of which the base is a circle and the summit a point. The term is used frequently in connection with a volcanic.
343 Wall An ice cliff forming the seaward margin of an inland ice sheet, ice cap, ice piedmont or ice rise. The rock basement may be at or below sea level.
345 Water body An enclosed body of water, usually but not necessarily fresh water, from which the sea is excluded.
346 Watercourse A natural stream arising in a given drainage basin but not wholly dependent for its flow on surface drainage in its immediate area, flowing in a channel with a well-defined bed between visible banks or through a definite depression in the land, having a definite and permanent or periodic supply of water, and usually, but not necessarily, having a perceptible current in a particular direction and discharging at a fixed point into another body of water.