Thompson Island (South Atlantic)

Last updated

Coordinates: 53°56′S5°30′E / 53.933°S 5.500°E / -53.933; 5.500

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.

Contents

1898 German map of Bouvet Island, with Thompson I. Bouvet-Gruppe Karte 1898.jpg
1898 German map of Bouvet Island, with Thompson I.
Atlantic Ocean laea location map.svg
Gold pog.svg
Thompson
Island
Supposed location of Thompson Island on a map of the Atlantic Ocean.

Thompson Island was a phantom island in the South Atlantic. According to the Global Volcanism Program, it was thought to be about 70 km (43  mi ; 38  nmi ) north-northeast of Bouvet Island, [1] a small Norwegian dependency between South Africa and Antarctica.

Phantom island Island that was believed to exist but later proven to be nonexistent

A phantom island is a purported island which appeared on maps for a period of time during recorded history, but was removed from later maps after it was proven not to exist.

Atlantic Ocean Ocean between Europe, Africa and the Americas

The Atlantic Ocean is the second largest of the world's oceans, with an area of about 106,460,000 square kilometers. It covers approximately 20 percent of Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World".

Global Volcanism Program American research program

The Smithsonian Institution's Global Volcanism Program (GVP) documents Earth's volcanoes and their eruptive history over the past 10,000 years. The GVP reports on current eruptions from around the world as well as maintaining a database repository on active volcanoes and their eruptions. In this way, a global context for the planet's active volcanism is presented. Smithsonian reporting on current volcanic activity dates back to 1968, with the Center for Short-Lived Phenomena (CSLP). The GVP is housed in the Department of Mineral Sciences, part of the National Museum of Natural History, on the National Mall in Washington, D.C.

History

The island was first reported and named by whaling ship captain George Norris in 1825, supposedly the same day as sighting and landing on Bouvet Island, erroneously thinking the island to be undiscovered and naming it Liverpool Island. The last reported sighting was in 1893. When, however, the German survey ship Valdivia fixed the position of Bouvet in 1898, it then looked for Thompson, but did not find it. If Thompson ever existed, it is probable that it disappeared in a volcanic eruption sometime in the 1890s, [2] though in 1997 it was reported that the sea depth at the supposed location is greater than 2,400 metres (7,900 ft; 1.5 mi), rendering the existence of a submarine volcano all but impossible. [1]

Whaler specialized ship designed for whaling

A whaler or whaling ship is a specialized ship, designed, or adapted, for whaling: the catching or processing of whales. The former includes the whale catcher – a steam or diesel-driven vessel with a harpoon gun mounted at its bow. The latter includes such vessels as the sail or steam-driven whaleship of the 16th to early 20th centuries and the floating factory or factory ship of the modern era. There have also been vessels which combined the two activities, such as the bottlenose whalers of the late 19th and early 20th century, and catcher/factory ships of the modern era.

Sea captain Commander of a ship or other sea-going vessel

A sea captain, ship's captain, captain, master, or shipmaster, is a high-grade licensed mariner who holds ultimate command and responsibility of a merchant vessel. The captain is responsible for the safe and efficient operation of the ship‍—‌including its seaworthiness, safety and security, cargo operations, navigation, crew management, and legal compliance‍—‌and for the persons and cargo on board.

Bouvet Island Uninhabited subantarctic volcanic island

Bouvet Island is an uninhabited subantarctic high island and dependency of Norway located in the South Atlantic Ocean at 54°25′S3°22′E, thus locating it north of and outside the Antarctic Treaty System. It lies at the southern end of the Mid-Atlantic Ridge and is the most remote island in the world, approximately 1,700 kilometres (1,100 mi) north of the Princess Astrid Coast of Queen Maud Land, Antarctica, 1,160 kilometres (720 mi) east of the South Sandwich Islands and 2,600 kilometres (1,600 mi) south-southwest of the coast of South Africa.

Thompson Island continued to appear on maps published as late as 1943. [3]

Map A symbolic depiction of relationships between elements of some space

A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes.

In fiction

Geoffrey Ernest Jenkins was a South African journalist, novelist and screenwriter. His wife Eve Palmer, with whom he collaborated on several works, wrote numerous non-fiction works about Southern Africa.

Refraction refraction of light

In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation relative to the direction of change in speed.

<i>Cold Skin</i> (novel) book

Cold Skin is the debut novel by Spanish author Albert Sánchez Piñol. The novel had remarkable success with numerous reprints and translations rights. It has been translated to 37 languages, and more than 150,000 copies were sold in its original edition.

See also

Saxemberg Island phantom island

Saxemberg was a phantom island believed to have existed in the South Atlantic. It appeared intermittently on charts between the 17th and the 19th centuries.

St. Matthew Island (phantom island)

St Matthew Island is a phantom island once thought to lie roughly one thousand kilometers northeast of Ascension Island in the Atlantic Ocean. It appeared on navigational charts until as late as the early twentieth century. It was supposedly located at approximately 2°S 8°W, and was alleged to have been discovered by the Portuguese on St. Matthew's Day 1516. It was shown and named on several maps going back to the beginning of the sixteenth century, and it was supposedly visited by García Jofre de Loaísa on 20 October 1525 while on a voyage to the Moluccas. It appeared on early Portuguese charts and world maps, and appears on Ortelius' 1570 map of the African continent Africae Tabula Nova. It thereafter regularly featured on charts and maps, and though it began to disappear from standard charts starting in the early nineteenth century, it was not completely removed from charts until the early twentieth century.

Notes

  1. 1 2 "Thompson Island". Global Volcanism Program . Smithsonian Institution.
  2. P.E. Baker (1967). "Historical & Geological Notes on Bouvetoya" (PDF). British Antarctic Survey Bulletin (13): 71–84. Archived from the original (PDF) on 2012-05-08.
  3. A. R. H. and N. A. M. (1943). "Review: A New Chart of the Antarctic". The Geographical Journal. 102 (1): 29–34. doi:10.2307/1789367. JSTOR   1789367.
  4. Geoffrey Jenkins (1962). A Grue of Ice. Fontana. ISBN   0-00-613269-3.

Related Research Articles

Antarctic region around the Earths South Pole

The Antarctic is a polar region around the Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica, the Kerguelen Plateau and other island territories located on the Antarctic Plate or south of the Antarctic Convergence. The Antarctic region includes the ice shelves, waters, and all the island territories in the Southern Ocean situated south of the Antarctic Convergence, a zone approximately 32 to 48 km wide varying in latitude seasonally. The region covers some 20 percent of the Southern Hemisphere, of which 5.5 percent is the surface area of the Antarctic continent itself. All of the land and ice shelves south of 60°S latitude are administered under the Antarctic Treaty System. Biogeographically, the Antarctic ecozone is one of eight ecozones of the Earth's land surface.

South Georgia and the South Sandwich Islands British overseas territory in the Southern Atlantic Ocean

South Georgia and the South Sandwich Islands (SGSSI) is a British Overseas Territory in the southern Atlantic Ocean. It is a remote and inhospitable collection of islands, consisting of South Georgia and a chain of smaller islands known as the South Sandwich Islands. South Georgia is 165 kilometres (103 mi) long and 35 kilometres (22 mi) wide and is by far the largest island in the territory. The South Sandwich Islands lie about 700 kilometres (430 mi) southeast of South Georgia. The territory's total land area is 3,903 km2 (1,507 sq mi). The Falkland Islands are about 1,300 kilometres (810 mi) west-northwest from its nearest point.

History of Antarctica past events regarding the continent of Antarctica

The history of Antarctica emerges from early Western theories of a vast continent, known as Terra Australis, believed to exist in the far south of the globe. The term Antarctic, referring to the opposite of the Arctic Circle, was coined by Marinus of Tyre in the 2nd century AD.

Peter I Island Norwegian territorial claim and volcanic island in the Bellingshausen Sea

Peter I Island is an uninhabited volcanic island in the Bellingshausen Sea, 450 kilometres (280 mi) from continental Antarctica. It is claimed as a dependency of Norway, and along with Bouvet Island and Queen Maud Land comprises one of the three Norwegian dependent territories in the Antarctic and Subantarctic. Peter I Island is 11 by 19 kilometres long and 156 square kilometres (60 sq mi), slightly larger than Staten Island in the state of New York in the United States. The tallest peak is the ultra and 1,640-meter (5,380 ft) tall Lars Christensen Peak. Nearly all of the island is covered by a glacier and it is surrounded most of the year by pack ice, making it inaccessible during these times. There is little vertebrate animal life on the island apart from some seabirds and seals.

Drygalski Island island

Drygalski Island is an ice-capped island that is 20.4 kilometres (11 nmi) long and rises to 325 m (1,066 ft) in the Davis Sea of the Southern Ocean, about 85 km (53 mi) north of the coast of Queen Mary Land and 45 km (28 mi) north-northeast of Cape Filchner. The island has an area of 220 km2 (85 sq mi).

Deception Island Island in the South Shetland Islands archipelago, with one of the safest harbours in Antarctica

Deception Island is an island in the South Shetland Islands archipelago, with one of the safest harbours in Antarctica. This island is the caldera of an active volcano, which seriously damaged local scientific stations in 1967 and 1969. The island previously held a whaling station; it is now a tourist destination and scientific outpost, with Argentine and Spanish research bases. While various countries have asserted sovereignty, it is still administered under the Antarctic Treaty System.

Montagu Island island

Montagu Island is the largest of the South Sandwich Islands, located in the Scotia Sea off the coast of Antarctica. It is a part of the British Overseas Territory, South Georgia and the South Sandwich Islands. It is located 60 km (37 mi) northeast from Bristol Island and 62 km (39 mi) south from Saunders Island.

South Orkney Islands A group of islands in the Southern Ocean north-east of the Antarctic Peninsula

The South Orkney Islands are a group of islands in the Southern Ocean, about 604 kilometres (375 mi) north-east of the tip of the Antarctic Peninsula and 844 kilometres (524 mi) south-west of South Georgia Island. They have a total area of about 620 square kilometres (240 sq mi). The islands are claimed both by Britain, and by Argentina as part of Argentine Antarctica. Under the 1959 Antarctic Treaty, sovereignty claims are held in abeyance.

Aurora Islands phantom islands

The Aurora Islands was a group of three phantom islands first reported in 1762 by the Spanish merchant ship Aurora while sailing from Lima to Cádiz. The Aurora's officers reported sighting them again in 1774. The Spanish ship San Miguel fixed their location at 52°37'S, 47°49'W. On 20 February 1794, they were sighted again by a Spanish survey ship, the corvette Atrevida, which as part of the Alejandro Malaspina circumnavigation had been sent to confirm them. Their reported location was approximately halfway between the Falkland Islands and South Georgia at 53°S48°W. The latitude is considered perfect, the longitude was based on the meridian of the astronomical observatory, San Fernando, Cádiz. The islands were last reportedly sighted in 1856, but continued to appear on maps of the South Atlantic until the 1870s.

Scotia Sea A sea at the northern edge of the Southern Ocean at its boundary with the South Atlantic Ocean. It is bounded on the west by the Drake Passage and on the north, east, and south by the Scotia Arc

The Scotia Sea is a sea located at the northern edge of the Southern Ocean at its boundary with the South Atlantic Ocean. It is bounded on the west by the Drake Passage and on the north, east, and south by the Scotia Arc, an undersea ridge and island arc system supporting various islands. The sea sits atop the Scotia Plate. It is named after the expedition ship Scotia.

Usarp Mountains

The Usarp Mountains is a major Antarctic mountain range, lying westward of the Rennick Glacier and trending N-S for about 190 kilometres (118 mi). The feature is bounded to the north by Pryor Glacier and the Wilson Hills. Its important constituent parts include Welcome Mountain, Mount Van der Hoeven, Mount Weihaupt, Mount Stuart, Mount Lorius, Smith Bench, Mount Roberts, Pomerantz Tableland, Daniels Range, Emlen Peaks, Helliwell Hills and Morozumi Range.

Charcot Island island in the Antarctic

Charcot Island or Charcot Land is an island administered under the Antarctic Treaty System, 56 kilometres (30 nmi) long and 46 kilometres (25 nmi) wide, which is ice covered except for prominent mountains overlooking the north coast. Charcot Island lies within the Bellingshausen Sea, 102 kilometres (55 nmi) west of Alexander Island, and about 57 kilometres (31 nmi) north of Latady Island. A notable landmark of the island is its northernmost point, Cape Byrd.

Paulet Island island in Graham Land, Antarctica

Paulet Island is a circular island about 1.5 km (0.93 mi) in diameter, lying 4.5 km (2.8 mi) south-east of Dundee Island, off the north-eastern end of the Antarctic Peninsula. Because of its large penguin colony, it is a popular destination for sightseeing tours.

Bransfield Strait strait

Bransfield Strait is a body of water about 100 kilometres (60 mi) wide extending for 300 miles (500 km) in a general northeast – southwest direction between the South Shetland Islands and the Antarctic Peninsula.

Subantarctic A region in the southern hemisphere that is just north of the Antarctic region.

The Subantarctic is a region in the southern hemisphere, located immediately north of the Antarctic region. This translates roughly to a latitude of between 46° and 60° south of the Equator. The subantarctic region includes many islands in the southern parts of the Indian Ocean, Atlantic Ocean and Pacific Ocean, especially those situated north of the Antarctic Convergence. Subantarctic glaciers are, by definition, located on islands within the subantarctic region. All glaciers located on the continent of Antarctica are by definition considered to be Antarctic glaciers.

Willis Islands island group

The Willis Islands are a small archipelago to the west of South Georgia Island in the South Georgia Islands. They are 2 miles (3.2 km) west of Bird Island, separated by the Stewart Strait. They were discovered on 14 January 1775 by Captain James Cook and named for Cook's midshipman Thomas Willis, the crew member who first sighted them. The Willis Islands were charted in greater detail and individually named by Discovery Investigations (DI) personnel between 1926-1930.

Prioress Island is a narrow island lying 0.5 nautical miles (0.9 km) east of Host Island in the Wauwermans Islands, in the Wilhelm Archipelago. Shown on an Argentine government chart of 1954. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1958 after one of the characters in Geoffrey Chaucer's Canterbury Tales.

Dependencies of Norway

Norway has three dependent territories, all uninhabited and located in the Southern Hemisphere. Bouvetøya is a Subantarctic island in the South Atlantic Ocean. Queen Maud Land is a sector of Antarctica which spans between the 20th meridian west and the 45th meridian east. Peter I Island is a volcanic island located 450 kilometres (280 mi) off the coast of Ellsworth Land of continental Antarctica. Svalbard is not considered to be a dependency. While the Svalbard Treaty regulates some aspects of that Arctic territory, one article acknowledges that these islands are part of Norway. Similarly, Jan Mayen is recognized as an integral part of the nation. Both are, however, unincorporated areas.

Ardley Island island in Antarctica

Ardley Island is an island 1.9 kilometres (1 nmi) long, lying in Maxwell Bay close off the south-west end of King George Island, in the South Shetland Islands of Antarctica. It was charted as a peninsula in 1935 by Discovery Investigations personnel of the Discovery II and named for Lieutenant R.A.B. Ardley, Royal Naval Reserve, an officer on the ship in 1929–31 and 1931–33. Aerial photography has since shown that the feature is an island with Braillard Point being the headland forming the northeast end of Ardley Island. It has been designated an Antarctic Specially Protected Area because of the importance of its seabird colonies.

References