Ellesmere Island in the context of Romanization of Inuktitut

Canada has a vast geography that occupies much of the continent of North America, sharing a land border with the contiguous United States to the south and the US state of Alaska to the northwest. Canada stretches from the Atlantic Ocean in the east to the Pacific Ocean in the west; to the north lies the Arctic Ocean. Greenland is to the northeast with a shared border on Hans Island. To the southeast Canada shares a maritime boundary with France's overseas collectivity of Saint Pierre and Miquelon, the last vestige of New France. By total area (including its waters), Canada is the second-largest country in the world, after Russia. By land area alone, however, Canada ranks fourth, the difference being due to it having the world's largest proportion of fresh water lakes. Of Canada's thirteen provinces and territories, only two are landlocked (Alberta and Saskatchewan) while the other eleven all directly border one of three oceans.

Canada is home to the world's northernmost settlement, Canadian Forces Station Alert, on the northern tip of Ellesmere Island—latitude 82.5°N—which lies 817 kilometres (508 mi) from the North Pole. Much of the Canadian Arctic is covered by ice and permafrost. Canada has the longest coastline in the world, with a total length of 243,042 kilometres (151,019 mi); additionally, its border with the United States is the world's longest land border, stretching 8,891 kilometres (5,525 mi). Three of Canada's Arctic islands, Baffin Island, Victoria Island and Ellesmere Island, are among the ten largest in the world.

Hans Island (Inuktitut and Greenlandic: Tartupaluk, lit. 'kidney shaped'; Inuktitut syllabics: ᑕᕐᑐᐸᓗᒃ; Danish: Hans Ø, pronounced [hanˀs øˀ]; French: île Hans, pronounced [il ɑ̃(n)s]) is an island in the centre of the Kennedy Channel of the Nares Strait in the high Arctic region, split between the Canadian territory of Nunavut and the Danish autonomous territory of Greenland.

The island itself is barren and uninhabited with an area of 130 ha (320 acres), measuring 1,290 by 1,199 m (4,232 by 3,934 ft), and a maximum elevation of 168.17 m (551.7 ft). Its location in the strait that separates Ellesmere Island of Canada from northern Greenland was for years a border dispute, the so-called Whisky War between the two countries of Canada and Denmark. Hans Island is the smallest of three islands in Kennedy Channel off the Washington Land coast; the others are Franklin Island and Crozier Island. The strait at this point is 35 km (22 mi) wide, placing the island within the territorial waters of both Canada and Denmark (Greenland). A 1,280 m (4,200 ft) shared border traverses the island.

The Lomonosov Ridge (Russian: Хребет Ломоносова, Danish: Lomonosovryggen) is an unusual underwater ridge of continental crust in the Arctic Ocean. It spans 1,800 kilometres (1,100 mi) between the New Siberian Islands over the central part of the ocean to Ellesmere Island of the Canadian Arctic Archipelago. The ridge divides the Arctic Basin into the Eurasian Basin and the Amerasian Basin. The width of the Lomonosov Ridge varies from 60 to 200 kilometres (37 to 124 mi). It rises 3,300 to 3,700 metres (10,800 to 12,100 ft) above the 4,200-metre (13,800 ft) deep seabed. The minimum depth of the ocean above the ridge is less than 400 metres (1,300 ft). Slopes of the ridge are relatively steep, broken up by canyons, and covered with layers of silt. It is an aseismic ridge.

The Lomonosov Ridge was first discovered by the Soviet high-latitude expeditions in 1948 and is named after Mikhail Lomonosov. The name was approved by the GEBCO Sub-Committee on Undersea Feature Names (SCUFN).

The Alpha Ridge is a major volcanic ridge under the Arctic Ocean between the Canada Basin (off Ellesmere Island) and the Lomonosov Ridge. It was active during the formation of the Amerasian Basin. It was discovered in 1963. The highest elevation is about 2,700 m over the ocean floor. It is 200 to 450 km wide. The Alpha Ridge, Lomonosov Ridge, and Nansen-Gakkel Ridge are the three major ranges that divide the Arctic Ocean floor, running generally parallel to each other.

The 1983 Canadian Expedition to Study the Alpha Ridge (CESAR) seemed to establish that the Alpha Ridge is an extension of the continent from Ellesmere Island and hence there is a possibility that Canada may lay claim to the resource rights for the region, in particular for petroleum, according to the United Nations' Law of the Sea. There is no final conclusion to the issue so far, and part of the research planned for the European Drilling Research Icebreaker (Aurora Borealis) was drilling of the Alpha Ridge to collect more data.

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.

The magnitude of Earth's magnetic field at its surface ranges from 25 to 65 μT (0.25 to 0.65 G). As an approximation, it is represented by a field of a magnetic dipole currently tilted at an angle of about 11° with respect to Earth's rotational axis, as if there were an enormous bar magnet placed at that angle through the center of Earth. The North geomagnetic pole (Ellesmere Island, Nunavut, Canada) actually represents the South pole of Earth's magnetic field, and conversely the South geomagnetic pole corresponds to the north pole of Earth's magnetic field (because opposite magnetic poles attract and the north end of a magnet, like a compass needle, points toward Earth's South magnetic field.)

The north magnetic pole, also known as the magnetic north pole, is a point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downward (in other words, if a magnetic compass needle is allowed to rotate in three dimensions, it will point straight down). There is only one location where this occurs, near (but distinct from) the geographic north pole. The Earth's Magnetic North Pole is actually considered the "south pole" in terms of a typical magnet, meaning that the north pole of a magnet would be attracted to the Earth's magnetic north pole.

The north magnetic pole moves over time according to magnetic changes and flux lobe elongation in the Earth's outer core. In 2001, it was determined by the Geological Survey of Canada to lie west of Ellesmere Island in northern Canada at 81°18′N 110°48′W / 81.300°N 110.800°W / 81.300; -110.800 (Magnetic North Pole 2001). It was situated at 83°06′N 117°48′W / 83.100°N 117.800°W / 83.100; -117.800 (Magnetic North Pole 2005 est) in 2005. In 2009, while still situated within the Canadian Arctic at 84°54′N 131°00′W / 84.900°N 131.000°W / 84.900; -131.000 (Magnetic North Pole 2009), it was moving toward Russia at between 55 and 60 km (34 and 37 mi) per year. In 2013, the distance between the north magnetic pole and the geographic north pole was approximately 800 kilometres (500 mi). As of 2021, the pole is projected to have moved beyond the Canadian Arctic to 86°24′00″N 156°47′10″E / 86.400°N 156.786°E / 86.400; 156.786 (Magnetic North Pole 2021 est).

Canadian Forces Station Alert (French: Station des Forces canadiennes Alert), often shortened to CFS Alert (SFC Alert), is a signals intelligence intercept facility of the Canadian Armed Forces at Alert, in the Qikiqtaaluk Region of Nunavut, Canada.

Located on the northeastern tip of Ellesmere Island, Alert is the northernmost continuously inhabited place in the world. It takes its name from the Royal Navy vessel HMS Alert, which wintered 10 km (6.2 mi) east of the present station off what is now Cape Sheridan, Nunavut in 1875–1876.

The Nares Strait (Danish: Nares Strædet; French: Détroit de Nares) is a waterway between Ellesmere Island and Greenland that connects the northern part of Baffin Bay in the Atlantic Ocean with the Lincoln Sea in the Arctic Ocean. From south to north, the strait includes Smith Sound, Kane Basin, Kennedy Channel, Hall Basin and Robeson Channel. Nares Strait has a nearly permanent current from the north, powered by the Beaufort Gyre, making it harder to traverse for ships coming from the south.

In 1964, its name was agreed by the Danish (Stednavneudvalget, now Stednavnenævnet) and Canadian governments. The name derives from the British naval officer George Strong Nares.

Kennedy Channel (Danish: Kennedykanalen; French: Passage Kennedy; 80°55′N 66°30′W / 80.917°N 66.500°W / 80.917; -66.500 (Kennedy Channel)) is an Arctic sea passage between Greenland and Canada's most northerly island, Ellesmere Island.

It was named by Elisha Kane around 1854 during his second Arctic voyage in search of the lost Franklin expedition. It is unknown whether it was named for Canadian fur trader, explorer, politician, and historian William Kennedy, whom he had met a few years previously during searches for Franklin's expedition, or John Pendleton Kennedy, the United States Secretary of the Navy during 1852 to 1853.

The Canada Basin is a deep oceanic basin within the Arctic Ocean. It is part of the Amerasian Basin and lies off the coast of Alaska and northwest Canada between the Chukchi Plateau north of Alaska and the Alpha Ridge north of Ellesmere Island.

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. It is called the True North Pole to distinguish from the Magnetic North Pole.

The North Pole is by definition the northernmost point on the Earth, lying antipodally to the South Pole. It defines geodetic latitude 90° North, as well as the direction of true north. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value. No time zone has been assigned to the North Pole, so any time can be used as the local time. Along tight latitude circles, counterclockwise is east and clockwise is west. The North Pole is at the center of the Northern Hemisphere. The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about 700 km (430 mi) away, though some perhaps semi-permanent gravel banks lie slightly closer. The nearest permanently inhabited place is Alert on Ellesmere Island, Canada, which is located 817 km (508 mi) from the Pole.

The Arctic Cordillera is a terrestrial ecozone in northern Canada characterized by a vast, deeply dissected chain of mountain ranges extending along the northeastern flank of the Canadian Arctic Archipelago from Ellesmere Island to the northeasternmost part of the Labrador Peninsula in northern Labrador and northern Quebec, Canada. It spans most of the eastern coast of Nunavut with high glaciated peaks rising through ice fields and some of Canada's largest ice caps, including the Penny Ice Cap on Baffin Island. It is bounded to the east by Baffin Bay, Davis Strait and the Labrador Sea while its northern portion is bounded by the Arctic Ocean.

The geographic range is composed along the provinces of Labrador: including Eastern Baffin, Devon Island, Ellesmere, Bylot Island, the Torngat Mountains, and some parts of the Northeastern fringe. The landscape is dominated by massive polar icefields, alpine glaciers, inland fjords, and large bordering bodies of water, distinctive of many similar arctic regions in the world. Although the terrain is infamous for its unforgiving conditions, humans maintained an established population of 1000 people – 80% of which were Inuit. In addition, the landscape is 75% covered by ice or exposed bedrock, with a continuous permafrost that persists throughout the year, making plant and animal life somewhat scarce. The temperature of the Arctic Cordillera ranges from 6 °C in summer, down to −16 °C in winter. Vegetation is largely absent in this area due to permanent ice and snow.

Alert, in the Qikiqtaaluk Region of Nunavut, Canada, is the northernmost continuously inhabited place in the world. The location is on Ellesmere Island (in the Queen Elizabeth Islands) at latitude 82°30'05" north, 817 km (508 mi) from the North Pole. It takes its name from the Royal Navy vessel HMS Alert, which wintered 10 km (6.2 mi) east of the present station off what is now Cape Sheridan in 1875–1876.

All Alert residents are temporary, typically serving three- to six-month tours of duty there. They staff a military signals intelligence radio receiving facility at Canadian Forces Station Alert (CFS Alert, which includes Alert Airport), as well as the Dr. Neil Trivett Global Atmosphere Watch Observatory, a co-located weather station and monitoring observatory, both operated by Environment and Climate Change Canada (ECCC).

Cape Sheridan is on the northeastern coast of Ellesmere Island, Canada situated on the Lincoln Sea in the Arctic Ocean, on the mouth of Sheridan River, west bank. It is one of the closest points of land to the geographic North Pole, approximately 840 km (520 mi) to the north, Cape Columbia is however some 75 km (47 mi) closer to the Pole.

Cape Sheridan was the wintering site of Robert Peary's final quest to reach the north pole in 1908 / 1909; the Cape Sheridan Depot being located there.

Cape Columbia is the northernmost point of land of Canada, located on Ellesmere Island in the Qikiqtaaluk Region of Nunavut. It marks the westernmost coastal point of Lincoln Sea in the Arctic Ocean. It is the world's northernmost point of land outside Greenland. The distance to the North Pole is 769 km (478 mi).

As the northernmost point of Canada, Cape Columbia is exposed to the ice drift of the Arctic sea ice. The approximately 2 m (6 ft 7 in) thick pack ice of the Arctic Ocean moves several hundred metres per day from east to west. As a result, mighty ice pressure ridges can be piled up at Cape Columbia.

Smith Sound (Danish: Smith Sund; French: Détroit de Smith) is an Arctic sea passage between Greenland and Nunavut's northernmost island, Ellesmere Island. It links Baffin Bay with Kane Basin and forms part of the Nares Strait. On the Canadian side it extends from Cape Sabine in the north to Cape Isabella in the south.

On the Greenland side of the sound were the now abandoned settlements of Etah and Annoatok.