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58-502: Diavik Diamond Mine is an industrial complex set in a remote, subarctic landscape. It consists of four kimberlite pipes associated with the Lac de Gras kimberlite field and is located on an island 20 km (7.7 sq mi) in Lac de Gras informally known as East Island. It is about 220 km (140 mi) south of the Arctic Circle . In the 2015 satellite image below, one can see

116-684: A Russian flag made of rust-proof titanium alloy . The flag-placing, during Arktika 2007 , generated commentary on and concern for a race for control of the Arctic's vast hydrocarbon resources. Foreign ministers and other officials representing Canada, the Kingdom of Denmark, Norway, Russia, and the United States met in Ilulissat, Greenland on 28 May 2008 at the Arctic Ocean Conference and announced

174-502: A ring species exists and has been described around the Arctic Circle in the form of the Larus gulls. There are copious natural resources in the Arctic (oil, gas, minerals, fresh water, fish and, if the subarctic is included, forest) to which modern technology and the economic opening up of Russia have given significant new opportunities. The interest of the tourism industry is also on

232-486: A consortium of seven mining companies, including Rio Tinto, announced they are sponsoring environmental impact studies to construct a deep-water port in Bathurst Inlet . Their plans include building a 211 km (131 mi) road connecting the port to their mines. The port would serve vessels of up to 25,000 tonnes . In March 2010, underground mining began at the mine. The transition from open pit to underground mining

290-527: A few parts of Europe where the winters are relatively mild due to prevailing wind and ocean current patterns, subarctic regions were not explored until the 18th and 19th centuries. Even then, the difficulty of transportation ensured that few settlements (most of them are created for mining ) lasted long—such as the abandoned, once-thriving cities of the Yukon , Northwest Territories and increasingly Siberia illustrate this. The Trans-Siberian Railway , which skirts

348-469: A new benchmark in cold-climate renewable energy. In 2015, $ US350 million was announced to fund the exploitation of a fourth kimberlite pipe ore body, known as A21. Construction of the A21 rockfill dike (like the other three ore bodies, A21 kimberlite pipe is under shallow waters of Lac de Gras) is expected to be complete in 2018 with first diamonds expected in the fall of that year. To build the dike, Diavik will use

406-485: A number of definitions of what area is contained within the Arctic. The area can be defined as north of the Arctic Circle (about 66° 34'N), the approximate southern limit of the midnight sun and the polar night . Another definition of the Arctic, which is popular with ecologists , is the region in the Northern Hemisphere where the average temperature for the warmest month (July) is below 10 °C (50 °F);

464-493: Is a polar region located at the northernmost part of Earth. The Arctic region, from the IERS Reference Meridian travelling east, consists of parts of northern Norway ( Nordland , Troms , Finnmark , Svalbard and Jan Mayen ), northernmost Sweden ( Västerbotten , Norrbotten and Lappland ), northern Finland ( North Ostrobothnia , Kainuu and Lappi ), Russia ( Murmansk , Siberia , Nenets Okrug , Novaya Zemlya ),

522-514: Is a large variance in predictions of Arctic sea ice loss, with models showing near-complete to complete loss in September from 2035 to some time around 2067. Arctic life is characterized by adaptation to short growing seasons with long periods of sunlight, and cold, dark, snow-covered winter conditions. Arctic vegetation is composed of plants such as dwarf shrubs , graminoids , herbs , lichens , and mosses , which all grow relatively close to

580-512: Is a unique area among Earth's ecosystems. The cultures in the region and the Arctic indigenous peoples have adapted to its cold and extreme conditions. Life in the Arctic includes zooplankton and phytoplankton , fish and marine mammals , birds, land animals, plants and human societies. Arctic land is bordered by the subarctic . The word Arctic comes from the Greek word ἀρκτικός ( arktikos ), "near

638-651: Is also claiming a large swath of seabed along the Lomonosov Ridge but, unlike Denmark, confined its claim to its side of the Arctic region. In August 2015, Russia made a supplementary submission for the expansion of the external borders of its continental shelf in the Arctic Ocean , asserting that the eastern part of the Lomonosov Ridge and the Mendeleyev Ridge are an extension of the Eurasian continent. In August 2016,

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696-432: Is also a concern. Because of the amplified response of the Arctic to global warming, it is often seen as a leading indicator of global warming. The melting of Greenland's ice sheet is linked to polar amplification. The Arctic region is especially vulnerable to the effects of any climate change , as has become apparent with the reduction of sea ice in recent years. Climate models predict much greater climate change in

754-478: Is also predicted to have a large impact on tundra vegetation, causing an increase of shrubs, and having a negative impact on bryophytes and lichens. Apart from concerns regarding the detrimental effects of warming in the Arctic, some potential opportunities have gained attention. The melting of the ice is making the Northwest Passage , shipping routes through the northernmost latitudes, more navigable, raising

812-551: Is owned by a joint venture between the Rio Tinto Group (60%) and Dominion Diamond Corporation (40%), and is operated by Yellowknife-based Diavik Diamond Mines Inc., a subsidiary of Rio Tinto Group. Commercial production commenced in 2003, and the lifespan of the mine is expected to be 16 to 22 years. It has become an important part of the regional economy, employing 1,000, and producing approximately 7 million carats (1,400 kg (3,100 lb)) of diamonds annually. The area

870-707: Is subject to some regulatory control through the International Code for Ships Operating in Polar Waters , adopted by the International Maritime Organization on 1 January 2017 and applies to all ships in Arctic waters over 500 tonnes. Research in the Arctic has long been a collaborative international effort, evidenced by the International Polar Year . The International Arctic Science Committee , hundreds of scientists and specialists of

928-560: Is typically greater in warmer months, with a summer maximum ranging from moderate in North America to extreme in the Russian Far East . Except in the wettest areas glaciers are not large because of the lack of winter precipitation; in the wettest areas, however, glaciers tend to be very abundant and Pleistocene glaciation covered even the lowest elevations. Soils of the subarctic are in which leaching of nutrients takes place even in

986-591: The Muttaburrasaurus of Australia. However, others claim that dinosaurs lived year-round at very high latitudes, such as near the Colville River , which is now at about 70° N but at the time (70 million years ago) was 10° further north. The earliest inhabitants of North America's central and eastern Arctic are referred to as the Arctic small tool tradition (AST) and existed c.  2500 BCE . AST consisted of several Paleo-Eskimo cultures, including

1044-668: The Arctic Council , and the Barents Euro-Arctic Council are more examples of collaborative international Arctic research. While there are several ongoing territorial claims in the Arctic , no country owns the geographic North Pole or the region of the Arctic Ocean surrounding it. The surrounding six Arctic states that border the Arctic Ocean—Canada, Kingdom of Denmark (with Greenland), Iceland, Norway, Russia, and

1102-667: The Arctic poppy ). Herbivores on the tundra include the Arctic hare , lemming , muskox , and reindeer (caribou). They are preyed on by the snowy owl , Arctic fox , grizzly bear , and Arctic wolf . The polar bear is also a predator, though it prefers to hunt for marine life from the ice. There are also many birds and marine species endemic to the colder regions. Other terrestrial animals include wolverines , moose , Dall sheep , ermines , and Arctic ground squirrels . Marine mammals include seals , walruses , and several species of cetacean — baleen whales and also narwhals , orcas , and belugas . An excellent and famous example of

1160-484: The Grand Banks and Sea of Okhotsk are two of the richest fisheries in the world and provide support for many small towns. Except for those areas that are well-drained or adjacent to warm ocean currents , there is almost always continuous permafrost due to the very cold winters and short summers. This means that building in most subarctic regions is very difficult and expensive: cities are very few ( Murmansk being

1218-605: The Ilulissat Declaration , blocking any "new comprehensive international legal regime to govern the Arctic Ocean," and pledging "the orderly settlement of any possible overlapping claims." As of 2012, the Kingdom of Denmark is claiming the continental shelf based on the Lomonosov Ridge between Greenland and over the North Pole to the northern limit of the exclusive economic zone of Russia . The Russian Federation

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1276-603: The Independence cultures and Pre-Dorset culture. The Dorset culture ( Inuktitut : Tuniit or Tunit ) refers to the next inhabitants of central and eastern Arctic. The Dorset culture evolved because of technological and economic changes during the period of 1050–550 BCE. With the exception of the Quebec / Labrador peninsula, the Dorset culture vanished around 1500 CE. Supported by genetic testing , evidence shows that descendants of

1334-825: The UN Commission on the Limits of the Continental Shelf began to consider Russia's submission. Canada claims the Northwest Passage as part of its internal waters belonging to Canada, while the United States and most maritime nations regards it as an international strait , which means that foreign vessels have right of transit passage. Since 1937, the larger portion of the Asian-side Arctic region has been extensively explored by Soviet and Russian crewed drifting ice stations . Between 1937 and 1991, 88 international polar crews established and occupied scientific settlements on

1392-541: The United Nations Conference on Sustainable Development , on 21 June 2012, proposed protecting the Arctic, similar to the Antarctic Treaty System . The initial focus of the campaign will be a UN resolution creating a global sanctuary around the pole, and a ban on oil drilling and unsustainable fishing in the Arctic. The Arctic has climate change rates that are amongst the highest in the world. Due to

1450-430: The drift ice and were carried thousands of kilometres by the ice flow. The Arctic is comparatively clean, although there are certain ecologically difficult localized pollution problems that present a serious threat to people's health living around these pollution sources. Due to the prevailing worldwide sea and air currents, the Arctic area is the fallout region for long-range transport pollutants , and in some places

1508-424: The permafrost thaws. The melting of Greenland's ice sheet is linked to polar amplification . Due to the poleward migration of the planet's isotherms (about 56 km (35 mi) per decade during the past 30 years as a consequence of global warming), the Arctic region (as defined by tree line and temperature) is currently shrinking. Perhaps the most alarming result of this is Arctic sea ice shrinkage. There

1566-424: The 1950s and 1960s. Hydro-Quebec in particular has carried out many engineering works in regions of near-continuous permafrost, but these have never supported a significant population and have only mainly served densely populated southern Quebec . Tourism in recent years has become a major source of revenue for most countries of the subarctic due to the beautiful, generally glacial landscapes so characteristic of

1624-680: The Arctic than the global average, resulting in significant international attention to the region. In particular, there are concerns that Arctic shrinkage, a consequence of melting glaciers and other ice in Greenland, could soon contribute to a substantial rise in sea levels worldwide. The current Arctic warming is leading to ancient carbon being released from thawing permafrost , leading to methane and carbon dioxide production by micro-organisms. Release of methane and carbon dioxide stored in permafrost could cause abrupt and severe global warming, as they are potent greenhouse gases . Climate change

1682-469: The Bear, northern" and from the word ἄρκτος ( arktos ), meaning bear. The name refers either to the constellation known as Ursa Major , the "Great Bear", which is prominent in the northern portion of the celestial sphere , or to the constellation Ursa Minor , the "Little Bear", which contains the celestial north pole (currently very near Polaris , the current north Pole Star, or North Star). There are

1740-591: The Dorset culture, known as the Sadlermiut , survived in Aivilik, Southampton and Coats Islands , until the beginning of the 20th century. The Dorset / Thule culture transition dates around the ninth–10th centuries CE. Scientists theorize that there may have been cross-contact of the two cultures with sharing of technology, such as fashioning harpoon heads, or the Thule may have found Dorset remnants and adapted their ways with

1798-517: The Dorset people in "an example of prehistoric genocide." By 1300 CE, the Inuit , present-day Arctic inhabitants and descendants of Thule culture, had settled in west Greenland, and moved into east Greenland over the following century ( Inughuit , Kalaallit and Tunumiit are modern Greenlandic Inuit groups descended from Thule). Over time, the Inuit have migrated throughout the Arctic regions of Eastern Russia,

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1856-523: The North , and Saami Council ). The council operates on consensus basis, mostly dealing with environmental treaties and not addressing boundary or resource disputes. Though Arctic policy priorities differ , every Arctic nation is concerned about sovereignty/defense, resource development, shipping routes, and environmental protection. Much work remains on regulatory agreements regarding shipping, tourism, and resource development in Arctic waters. Arctic shipping

1914-422: The United States ( Alaska ), Canada ( Yukon , Northwest Territories , Nunavut ), Danish Realm ( Greenland ), and northern Iceland ( Grímsey and Kolbeinsey ), along with the Arctic Ocean and adjacent seas. Land within the Arctic region has seasonally varying snow and ice cover, with predominantly treeless permafrost under the tundra . Arctic seas contain seasonal sea ice in many places. The Arctic region

1972-744: The United States, Canada, and Greenland. Other Circumpolar North indigenous peoples include the Chukchi , Evenks , Iñupiat , Khanty , Koryaks , Nenets , Sámi , Yukaghir , Gwichʼin , and Yupik . The eight Arctic nations (Canada, Kingdom of Denmark [Greenland & The Faroe Islands], Finland, Iceland, Norway, Sweden, Russia, and US) are all members of the Arctic Council , as are organizations representing six indigenous populations (The Aleut International Association , Arctic Athabaskan Council , Gwich'in Council International , Inuit Circumpolar Council , Russian Association of Indigenous Peoples of

2030-662: The United States—are limited to a 200 nautical miles (370 km; 230 mi) exclusive economic zone (EEZ) off their coasts. Two Arctic states (Finland and Sweden) do not have direct access to the Arctic Ocean. Upon ratification of the United Nations Convention on the Law of the Sea , a country has ten years to make claims to an extended continental shelf beyond its 200 nautical mile zone. Due to this, Norway (which ratified

2088-499: The coldest recorded temperature is approximately −68 °C (−90 °F). Coastal Arctic climates are moderated by oceanic influences, having generally warmer temperatures and heavier snowfalls than the colder and drier interior areas. The Arctic is affected by current global warming , leading to climate change in the Arctic , including Arctic sea ice decline , diminished ice in the Greenland ice sheet , and Arctic methane emissions as

2146-399: The concentrations exceed the levels of densely populated urban areas. An example of this is the phenomenon of Arctic haze , which is commonly blamed on long-range pollutants. Another example is with the bioaccumulation of PCB's ( polychlorinated biphenyls ) in Arctic wildlife and people. There have been many proposals to preserve the Arctic over the years. Most recently a group of stars at

2204-413: The convention in 1996), Russia (ratified in 1997), Canada (ratified in 2003) and the Kingdom of Denmark (ratified in 2004) launched projects to establish claims that certain sectors of the Arctic seabed should belong to their territories. On 2 August 2007, two Russian bathyscaphes , MIR-1 and MIR-2 , for the first time in history descended to the Arctic seabed beneath the North Pole and placed there

2262-568: The dominant vegetation is a peaty herbland dominated by grasses and sedges . Typically, there are only a few species of large terrestrial mammals in the subarctic regions, the most important being elk, moose ( Alces alces ), bears , reindeer ( Rangifer tarandus ), and wolves ( Canis lupus ). Agriculture is mainly limited to animal husbandry as many crops can't be grown here, though in some areas barley can be grown. Canada and Siberia are very rich in minerals, notably nickel , molybdenum , cobalt , lead , zinc and uranium , whilst

2320-487: The edge of the region, provided a major boost to Russian settlement in the subarctic, as did the intensive industrialization under Joseph Stalin that relied on the enormous mineral resources of the Central Siberian Plateau . Today, many towns in subarctic Russia are declining precipitously as mines close. In Canada, after the early minerals ran out, development stalled until hydroelectric development occurred in

2378-429: The ground, forming tundra . An example of a dwarf shrub is the bearberry . As one moves northward, the amount of warmth available for plant growth decreases considerably. In the northernmost areas, plants are at their metabolic limits, and small differences in the total amount of summer warmth make large differences in the amount of energy available for maintenance, growth and reproduction. Colder summer temperatures cause

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2436-424: The increase. The Arctic contains some of the last and most extensive continuous wilderness areas in the world, and its significance in preserving biodiversity and genotypes is considerable. The increasing presence of humans fragments vital habitats. The Arctic is particularly susceptible to the abrasion of groundcover and to the disturbance of the rare breeding grounds of the animals that are characteristic to

2494-739: The largest) and generally small, whilst roads are also few. Subarctic rail transport only exists in Europe (lines to Narvik and Murmansk) and the Norilsk – Dudinka line in northern Siberia , as well as the Alaska Railroad in Alaska and short sections of rail lines in Canada reaching northward into the lower subarctic. An important consequence is that transportation usually tends to be restricted to "bush" planes , helicopters and, in summer, riverboats . Except for

2552-406: The major impacts to the region from climate change the near climate future of the region will be extremely different under all scenarios of warming. The effects of climate change in the Arctic include rising temperatures, loss of sea ice , and melting of the Greenland ice sheet . Potential methane release from the region, especially through the thawing of permafrost and methane clathrates ,

2610-441: The most heavily glaciated regions. The dominant soil orders are podsols and, further north, gelisols . Subarctic regions are often characterized by taiga forest vegetation as deciduous trees can't withstand the long winters, though where winters are relatively mild, as in northern Norway , broadleaf forest may occur—though in some cases soils remain too saturated almost throughout the year to sustain any tree growth and

2668-564: The north of Fennoscandia , Northwestern Russia , Siberia , and the Cairngorms . Generally, subarctic regions fall between 50°N and 70°N latitude , depending on local climates. Precipitation is usually low, and vegetation is characteristic of the taiga . Daylight at these latitudes is quite extreme between summer and winter due to its high latitude. Near the summer solstice for instance, subarctic regions can experience an all-night period of either civil, nautical, or astronomical twilight (or in

2726-423: The northern reaches full daylight), since the sun never dips more than 18 degrees below the horizon. Noctilucent clouds are best observed within this range of latitude. Subarctic temperatures are above 10 °C (50 °F) for at least one and at most three months of the year. Precipitation tends to be low due to the low moisture content of the cold air but isn't to the point to semiarid regions. Precipitation

2784-464: The northernmost tree line roughly follows the isotherm at the boundary of this region. The climate of the Arctic region is characterized by cold winters and cool summers. Its precipitation mostly comes in the form of snow and is low, with most of the area receiving less than 50 cm (20 in). High winds often stir up snow, creating the illusion of continuous snowfall. Average winter temperatures can go as low as −40 °C (−40 °F), and

2842-655: The possibility that the Arctic region will become a prime trade route . One harbinger of the opening navigability of the Arctic took place in the summer of 2016 when the Crystal Serenity successfully navigated the Northwest Passage, a first for a large cruise ship. In addition, it is believed that the Arctic seabed may contain substantial oil fields which may become accessible if the ice covering them melts. These factors have led to recent international debates as to which nations can claim sovereignty or ownership over

2900-510: The predecessor culture. The evidence suggested that Inuit descend from the Birnirk of Siberia, who through the Thule culture expanded into northern Canada and Greenland, where they genetically and culturally completely replaced the Indigenous Dorset people some time after 1300 CE. The question of why the Dorset disappeared so completely has led some to suggest that Thule invaders wiped out

2958-651: The region. Most areas in the subarctic are among the most expensive places in the world to visit, due to both high costs of living and transportation inaccessibility. Nonetheless, the great opportunities for outdoor recreation lure an ever-increasing number of travelers. At the same time, the older industries of the subarctic (fishing, mining, hydroelectric power) are being threatened by both environmental opposition and overfishing leading to depleted stocks of commercially important species living in this region. Arctic The Arctic ( / ˈ ɑːr k t ɪ k / or / ˈ ɑːr t ɪ k / ) (from Greek ἄρκτος, 'bear')

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3016-756: The region. The Arctic also holds 1/5 of the Earth's water supply. During the Cretaceous time period , the Arctic still had seasonal snows, though only a light dusting and not enough to permanently hinder plant growth. Animals such as the Chasmosaurus , Hypacrosaurus , Troodon , and Edmontosaurus may have all migrated north to take advantage of the summer growing season, and migrated south to warmer climes when winter came. A similar situation may also have been found amongst dinosaurs that lived in Antarctic regions, such as

3074-527: The same technologies as were used to build the A154 and A418 dikes. In December 2015, Rio Tinto announced discovery of the 187.7 carat Diavik Foxfire diamond, one of the largest rough gem quality diamonds ever produced in Canada. The Diavik Foxfire was bestowed an indigenous name, Noi?eh Kwe, which, in the Tlicho First Nation language means caribou crossing stone. In October 2018, a yellow diamond of 552 carat

3132-432: The size, abundance, productivity and variety of plants to decrease. Trees cannot grow in the Arctic, but in its warmest parts, shrubs are common and can reach 2 m (6 ft 7 in) in height; sedges , mosses and lichens can form thick layers. In the coldest parts of the Arctic, much of the ground is bare; non-vascular plants such as lichens and mosses predominate, along with a few scattered grasses and forbs (like

3190-500: The two main open pits, waste rock pile, and an airstrip capable of landing aircraft as large as Boeing 737s and C130 Hercules . The complex also houses processing, power and boiler plants, fuel tanks, water and sewage processing facilities, maintenance shop, administrative buildings, and accommodations for workers. It is connected to points south by an ice road and Diavik Airport with a 5,234 ft (1,595 m) gravel runway regularly accommodating Boeing 737 jet aircraft. The mine

3248-657: Was completed in September 2012. In September 2012, Diavik completed construction of the Northwest Territories' first large scale wind farm . The four turbine, 9.2 megawatt facility provides 11 per cent (2015) of the Diavik mine's annual power needs and operates at 98% availability. Diesel fuel offset is about five million litres (1,300,000 US gal) per year. Diavik operates the world's largest wind diesel hybrid power facility at its remote off-grid mine. The wind farm, operational down to −40 °C (−40 °F), sets

3306-528: Was found at the mine. This is the largest diamond ever found in North America. On January 23, 2024, a Northwestern Air charter flight carrying workers to the mine crashed shortly after takeoff from Fort Smith Airport , killing six people and injuring one. Subarctic The subarctic zone is a region in the Northern Hemisphere immediately south of the true Arctic , north of hemiboreal regions and covering much of Alaska , Canada , Iceland ,

3364-535: Was surveyed in 1992 and construction began in 2001, with production commencing in January 2003. In 2006, the ice road from Yellowknife to the Diavik mine, and neighbouring mines, froze late and thawed early. The Diavik mine was unable to truck in all the supplies needed for the rest of 2006 before the road closed and arrangements had to be made to bring the remainder of the supplies in by air. Subsequent annual ice road resupply has been completed as planned. On July 5, 2007,

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