Ellef Ringnes Island

Ellef Ringnes Island is one of the Sverdrup Islands in the Qikiqtaaluk Region, Nunavut, Canada. A member of the Queen Elizabeth Islands and Arctic Archipelago, it is located in the Arctic Ocean, east of Borden Island, and west of Amund Ringnes Island. It has an area of , making it the 69th largest island in the world (slightly larger than Jamaica) and Canada's 16th largest island. Its highest mount is .

The island was named by Otto Sverdrup for Oslo brewer Ellef Ringnes, one of the sponsors of his expedition. It was first sighted by Europeans in 1901 by one of Sverdrup's men. The island was then claimed by Norway from 1902 until the claim was relinquished in favour of Canada in 1930.

History

The first known European sighting of Ellef Ringnes Island was in 1901 by a sledging party consisting of Gunerius Isachsen and Sverre Hassel, members of the Second Norwegian Arctic Expedition of 1898–1902, which was under the command of Otto Sverdrup. The island was named to honour Ellef Ringnes, one of the principal patrons of the expedition. At the time of the discovery of Ellef Ringnes Island, the expedition was based at Goose Fiord on the south coast of Ellesmere Island.

Isachsen and Hassel made their initial sighting of Ellef Ringnes Island on April 23 that year, as they rounded the southwest corner of Amund Ringnes Island, an island they had sighted and partly explored the previous year. The following day, Isachsen and Hassel travelled across Hassel Sound making a landfall at the southern extremity of the island. In the course of the following 20 days, they succeeded in circumnavigating Ellef Ringnes. The resulting map and notes on geological specimens are published in Otto Sverdrup's narrative ''New Land'' (1904).Stott, Donald F. ''Ellef Ringnes Island, Arctic Archipelago''. ttawa Dept. of Energy, Mines and Resources, 1969

In 1948. the Canadian Department of Transport and the United States Weather Bureau jointly established a meteorological station at Isachsen. The station was in operation for thirty years. Drilling took place on the island in the seventies by Panarctic Oils.

A High Arctic Weather Station (HAWS) called Isachsen lies on the west coast of the island. It was opened April 3, 1948 as part of a joint Canada-United States military effort to support a weather station network. When it closed on September 19, 1978, it was replaced with an automatic weather station. The station represented the only known permanent human settlement of the island. In 1959-1961 it was the base of operation for The Polar Continental Shelf Project administered by the then Department of Mines and Technical Surveys now Natural Resources Canada; Polar Shelf as it was known supports research throughout the Arctic, it is now based in Resolute. In the late 1970s there was also a fair amount of oil exploration with a new runway built in the vicinity of the Isachsen Dome; no significant amount of gas or oil was reportedly found.

Ellef Ringnes Island was the last landmass to be visited by the Earth's wandering north magnetic pole. In April and May 1994, Larry Newitt, of the Geological Survey of Canada, and Charles Barton, of the Geoscience Australia, conducted a survey to determine the average position of the north magnetic pole at that time. They established a temporary magnetic observatory on Lougheed Island, close to the predicted position of the pole. They determined that the average position of the north magnetic pole in 1994 was located on the Noice Peninsula, southwest Ellef Ringnes Island, at .

Geology

The island is characterized by broad lowlands and locally by dissected uplands which reflect the diversity of structures and lithological characters of the bedrock formations. The island is rimmed by low shelving coastal areas, domal structures (salt dome) with cores of diapiric anhydrite and secondary gypsum constitute striking features of the landscape. Two major structural provinces of the Arctic Archipelago are represented: the Sverdrup basin which includes the greater part of the island and preponderant thickness of sediments: and the Arctic Coastal Plain, an area at the north-eastern extremity of the island. These salt domes create the highest topographic features. While most of the island is flat lying, the salt domes stand out clearly on satellite. There are seven domes, Dumbbells, Contour, Hoodoo, Malloch, Haakon, Helicopter and Isachsen Dome () which is the highest point on the island. On the north part of the island, there is a concentration of gabbro and diabase dikes and sills. Most of the rock is Jurassic to Cretaceous with the northern part (Isachsen Peninsula) being Tertiary. The Jurassic and Cretaceous rocks are varying formations of sandstone and shale. The sediment was deposited in the Sverdrup Basin. The salt diapirs are Carboniferous.

Flora and fauna

Ellef Ringnes Island is interesting to biologists because of its extremely rigorous Arctic environment and its resulting meagre flora and fauna. Together with Amund Ringnes, Borden, Brock, King Christian, Lougheed, Mackenzie King and Meighen islands (the so-called northwestern Queen Elizabeth Islands) it constitutes the most barren part of the high Arctic region. Some idea of its bleakness is conveyed by the remarks of others who worked there. Vilhjalmur Stefansson (1921), on visiting Ellef Ringnes in June 1916, wrote "I did not see a blade of grass and the district struck me as the most barren I had even seen"; S. D. MacDonald (1961) who spent the field season of 1954 at Isachsen, stated, "My immediate impression of Isachsen was of a region of utter desolation". Summers at Isachsen, the richest locality on the island, are colder than at any other Arctic weather station. Accordingly, Ellef Ringnes probably supports fewer forms of life than any other ice-free Arctic land mass of comparable size (). The total confirmed flora comprises 49 species of vascular plants and about 85 of fungi; only 10 species of mammals and 15 of birds have been recorded on the island. Mammals include muskox, Peary caribou, polar bears and Arctic foxes Savile, D. B. 0. 1961a. The botany of the northwestern Queen Elizabeth Islands. Canada. J. Bot. 39:909–942

References

Further reading

* Antoniades, Dermot, Marianne S V Douglas, and John P Smol. 2003. "The Physical and Chemical Limnology of 24 Ponds and One Lake from Isachsen, Ellef Ringnes Island, Canadian High Arctic". ''International Review of Hydrobiology''. 88, no. 5: 519.
* Atkinson, Nigel. 2003. "Late Wisconsinan Glaciation of Amund and Ellef Ringnes Islands, Nunavut: Evidence for the Configuration, Dynamics, and Deglacial Chronology of the Northwest Sector of the Innuitian Ice Sheet". ''Canadian Journal of Earth Sciences''. 40: 351–363.
* Lea, Brian N. ''Oceanographic Observations Near Cape Macmillan, Ellef Ringnes Island, N.W.T''. Victoria: Dobrocky Seatech Limited, 1978.
* Saville, D. B. O. ''Bird and Mammal Observations on Ellef Ringnes Island in 1960''. 1961.

*St-Onge, D.A. et Gullentops, F. 2005 Morphodynamics of Cold High Latitude Semiarid Regions: The Example of Ellef Ringnes, Island, Nunavut; Géographie physique et Quaternaire, vol. 59, n°2-3, 2005, p. 103-111.
*Atkinson, N. and England, J., 2004. Postglacial emergence of Amund and Ellef Ringnes islands, Nunavut: implications for the northwest sector of the Innuitian Ice Sheet. Canadian Journal of Earth Sciences, 41: 271-28
*Bravar, J.-P. and Petit, F., 2000. Les cours d’eau, dynamique du système fluvial. 2^e édition, Armand Colin, Paris, 222 p.
*DeWolf, Y.C., 1988. Stratified slope deposits, p. 91-110. ''In'' M.J. Clark, ed., Permafrost and Periglacial Processes 6. Wiley, New York, 382 p.
*French, H.M., 1996. The Periglacial Environment, second edition. Addison Wesley Longman, London, 341 p.
*Guillien, Y., 1951. Les grèzes litées de Charentes. Revue géographique des Pyrénées et du Sud-ouest, 22: 154–162.
*Guillien, Y., 1964. Grèzes litées et bancs de neige. Géologie en Minjbow, 43: 103–112.
*Hodgson, D.A., 1982. Surficial materials and geomorphological processes, western Sverdrup and adjacent islands, District of Franklin. Geological Survey of Canada, Ottawa, Paper 81–9, 44 p.
*Hodgson, D.A. and Edlund, S.A., 1978. Surficial materials and vegetation, Amund Ringnes and Cornwall islands, District of Franklin. Geological Survey of Canada, Ottawa, Open File 541.
*Konishchev, V.N. and Rogov, V.V., 1993. Investigations of cryogenic weathering in Europe and Northern Asia. Permafrost and Periglacial Processes, 4: 49–64.
*Lamothe, C. and St-Onge, D., 1961. Observations d’un processus d’érosion périglaciaire dans la région d’Isachsen (T.N.O.). Geographical Bulletin, 16: 114-119
*Lewkowicz, A.G., 1992. Factors influencing the distribution and initiation of active-layer detachment slides on Ellesmere Island, Arctic Canada, p. 223-250. ''In'' J.C. Dixon and A.D. Abrahams, eds., Periglacial Geomorphology. John Wiley and Sons, Chichester, 354 p.
*Pissart, A., 1966. Le rôle géomorphologique du vent dans la région de Mould Bay, Île Prince Patrick-TNO-Canada. Zeitschrift fur Geomorphologie, 10: 226–236.
*Pissart, A., Vincent, J.S. et Edlund, S.A., 1977. Dépôts et phénomènes éoliens sur l’île de Banks, Territoires du Nord-Ouest, Canada. Canadian Journal of Earth Sciences, 14: 2452–2480.
*Seppala, M., 2004. Wind as a Geomorphic Agent in cold climates. Cambridge University Press, Cambridge'','' 358 p.
*St-Onge, D.A., 1959. Note sur l’érosion du gypse en climat périglaciaire. Revue canadienne de géographie, XIII: 155–162.
*St-Onge, D.A., 1965. La géomorphologie de l’île Ellef Ringnes, Territoires du Nord-Ouest, Canada. Direction de la géographie, Ministère des mines et des relevés techniques, Ottawa, Études géographiques 38, 58 p.
*St-Onge, D.A., 1968. Geomorphic maps, p. 383-403. ''In'' R.W. Fairbridge, ed., Encyclopedia of Geomorphology. Reinhold, New York, 1295 p.
*St-Onge, D.A., 1969. Nivation landforms. Geological Survey of Canada, Ottawa, Paper 69–30, 12 p.
*Thorn, C., 1988. Nivation: geomorphic chimera, p. 3-31. ''In'' M.J. Clark, ed., Advances in periglacial geomophology. John Wiley and Sons, Chichester, 481 p.
*Thorn, C., 2004. Whither or Wither, Periglacial Weathering Studies. Polar Geography, 28: 4–12.
*Tourenq, C., 1970. La gélivité des roches. Laboratoire central des ponts et chaussées, Paris, Rapport de recherche 6, 60 p.
*Tozer, E.T., Thorsteinsson, R. and Tozer, E.T., 1970. Cenozoic, p. 547-590. ''In'' R.J.W. Douglas, ed., Geology of the Arctic Archipelago, Chapter X of Geology and Economic Minerals of Canada. Geological Survey of Canada, Ottawa, Economic Geology Report 1, 830 p.
*Tricart, J., 1956. Étude expérimentale du problème de la gélivation. Biuletyn Peryglacjalny, 4: 285–318.
*Tricart, J., 1960. Les types de lits fluviaux. L’Information géographique, 4: 210–214.
*Tricart, J and Cailleux, A., 1967. Le modelé des régions périglaciaires; Traité de géomorphologie, Tome II. Société d’Enseignement Supérieur, Paris, 512 p.

{{Authority control

Islands of the Queen Elizabeth Islands
Sverdrup Islands
Uninhabited islands of Qikiqtaaluk Region