Argentine Antarctica

75°00′S 49°30′W

Argentine Antarctica
Antártida Argentina
Department
Argentine Antarctica map since 1950. Orcadas base from 1904.
Argentine Antarctica map since 1950. Orcadas base from 1904.
Official seal of Argentine Antarctica
Seal
Location in Antarctica
Location in Antarctica
Country Argentina
Province Tierra del Fuego
First expedition1901–1904
Founded byJosé María Sobral
Government
 • GovernorGustavo Melella
Area
 • Total1,461,597 km2 (564,326 sq mi)
 • Land965,597 km2 (372,819 sq mi)
 [1]
Population
 (2010 Census)[1][2]
 • Total469
 • Density0.00032/km2 (0.00083/sq mi)
Time zoneUTC-3
Argentine Postal Code
9411
Area codes0054 + 02901
Esperanza and Marambio Stations: 0054 + 02964
First baseOrcadas Base (1904)[3]
Number of bases13 bases (6 permanents and 7 seasonals)
64 others (huts, refuges, camps)
WebsiteDNA.gov.ar
"Antártida Argentina" redirects here. For the railway station in Rosario, see Antártida Argentina railway station.

Argentine Antarctica (Spanish: Antártida Argentina or Sector Antártico Argentino)[4] is an area on Antarctica claimed by Argentina as part of its national territory. It consists of the Antarctic Peninsula and a triangular section extending to the South Pole, delimited by the 25° West and 74° West meridians and the 60° South parallel.[5] This region overlaps with British and Chilean claims in Antarctica. Argentina's Antarctic claim is based on its presence on a base on Laurie Island in the South Orkney Islands since 1904, along with the area's proximity to the South American continent, and is subject to the Antarctic Treaty.[6][7] Administratively, Argentine Antarctica is a department of the province of Tierra del Fuego, Antarctica, and South Atlantic Islands. The provincial authorities are based in Ushuaia.[8] Argentine activities in Antarctica are coordinated by the Instituto Antártico Argentino (IAA) and Argentine Antarctic Program.

The Argentine exploration of the continent started early in the 20th century. José María Sobral was the first Argentine to set foot on Antarctica in 1902, where he spent two seasons with the Swedish Antarctic Expedition of Otto Nordenskiöld. Shortly afterward, in 1904, the Orcadas Permanent Base was established. Years later, other permanent and seasonal bases were constructed. The first Argentine expedition to reach the South Pole was the 1965 Operación 90.

The estimated area of Argentine Antarctica is 1,461,597 km2 (564,326 sq mi), of which 965,597 km2 (372,819 sq mi) is land. The ice of the glaciers over the territory's surface has an average thickness of 2 kilometres. Temperatures fall in a typical range from 0°C in summer to -60°C in winter, although in certain points the temperature may drop to as low as -82°C and may rise to 18°C.[9]

Time zone UTC-3 is used in the area, as in Argentina.

Argentina has six permanent Antarctic stations and seven summer stations.

According to the Argentine national census, in October 2010, Argentine Antarctica had 230 inhabitants (including 9 families and 16 children) at six permanent bases: 75 at Marambio, 66 at Esperanza, 33 at Carlini, 20 at San Martín, 19 at Belgrano II, and 17 at Orcadas.[10] Provisional results of the 2022 Argentine national census indicate 130 inhabitants for Argentine Antarctica.[11] Residents take part in general elections within Tierra del Fuego Province.[12]

History

First expeditions

In 1815, Guillermo Brown, an Irish-born Argentine Marine Commodore serving in the naval forces of the United Provinces of the Río de la Plata.They have launched a campaign to intercept the Spanish fleet in the Pacific Ocean. When they were crossing Cape Horn aboard the Hercules and Trinidad, strong winds pushed them to parallel 65° South. Some Argentine sources say that Brown had sighted Antarctic land on the expedition, saying that it is the reason why Argentine cartography often calls the northernmost part of the Antarctic Peninsula Tierra de la Trinidad.[13][14]

On 10 June 1829, the government of the province of Buenos Aires issued a decree creating the Political-Military Command of the Falkland (Malvinas) Islands (see Louis Vernet) including the islands adjacent to Cape Horn, which is situated in the territorial waters of Argentina and the Antarctic islands.

Regions of Argentina

The Argentine government decided to join the Swedish Antarctic Expedition on 10 October 1900. This expedition received support, and in exchange, offered the services of the Argentine Navy to deliver scientific data and zoological collections. On the way through Buenos Aires, Lieutenant Jose Maria Sobral boarded the ship Antarctic on 21 December 1901. As no news of the expedition reached the Argentine government, it fulfilled its commitment to support the expedition by renovating the Corvette ARA Uruguay. It set out on 8 October 1903 under the command of Lieutenant Julián Irizar to find and rescue members of the expedition who had been sheltering following the collapse of the Antarctic ship.

A hut has been built on Snow Hill Island in 1902. The Argentine Navy took possession of the hut in 1954 and named it Refugio Suecia. Currently, it is an Argentine historical monument and historical site as mentioned by the Antarctic Treaty.[15][16] The 1902 expedition built another hut in Hope Bay, which is also an Antarctic monument under the control of Esperanza Station.[17][18]

Permanent occupation
DNA-IAA emblem
Omond House, Laurie Island, circa 1903.
The Orcadas Base in 1996

On 2 January 1904, Argentina acquired a weather station installed by Scotsman William Speirs Bruce, in Laurie Island in the South Orkneys, where there had been a crew of six men making scientific observations. In it was a meteorological observatory, where he also worked. A post office was installed. On 22 February 1904, civilian (employee of the Argentine company official post and telegraph) Hugo Alberto Acuna noted the first time the flag of Argentina was officially raised on the Argentine Antarctic Sector. The observatory became the Orcadas Base, which is the oldest existing permanent human settlement in the Antarctic territory.[19]

The Argentine corvette ARA Uruguay returned to Antarctica in 1905 to take staff from the South Orkney and travel to Deception Island and Wiencke Island in search of Jean-Baptiste Charcot, whose French Antarctic Expedition (1903–1905) was believed to be lost. Because of the Argentine collaboration with his expedition, Charcot named an insular group as Argentine Islands. One of these islands was named Galindez Island in honor of the captain of the Corvette, Ismael Galíndez, and another was named Uruguay Island, in homage to the Argentine Corvette.[20]

The Argentine Government decided to establish two meteorological observatories on South Georgia Island and Wandel Island. Two attempted expeditions to Wandel Island failed. In June 1905, the transport ARA Guardia Nacional, under the command of the Lieutenant Alfredo P. Lamas, established an observatory in Grytviken in Cumberland Bay, renamed in Spanish Bahía Guardia Nacional.[21][22][23]

On 30 March 1927, the first radiotelegraph station in Antarctica was inaugurated on South Orkney Islands. On 15 December 1927, the General Directorate of Post and Telegraph from Argentina informed the International Bureau of the Universal Postal Union about their claims in Antarctica and other islands of the South Atlantic.

In 1939, Argentina temporarily created the National Commission of the Antarctic by Decree No. 35821. On 30 April 1940, it became a permanent body by Decree No. 61852 in order to increase research in the area.

In October 1941, the Instituto Geográfico Militar published maps showing the extent of the future Argentine claim between the 25° W and 75° W. In January 1942 the Argentine Government, according to the sector theory, said their Antarctic rights were between the Meridian 25° and 68°24' West (near Punta Dúngeness).

On 8 November 1942, Argentina laid claim to Antarctic land when an expedition under the command of the captain Alberto J. Oddera placed a cylinder containing a report and a flag on Deception Island. In January 1943, the crew of the British ship HMS Carnarvon Castle removed the evidence of the Argentine inauguration and planted the British flag. On 5 March of the same year, the Argentine vessel ARA 1° de Mayo removed the British flag.

In 1946, the National Antarctic Commission set new limits for Argentine Antarctica between the Meridian 25° and 74° West (near the far east of the South Sandwich Islands). on 4 March 1948, Chile and Argentina signed a mutual agreement protecting and defending legal rights of the territorial Antarctic, mutually recognizing their claims.

On 7 April 1948, Decree No. 9905 placed the administration of the Argentine Antarctic Sector with the maritime Governor of the National Territory of Tierra del Fuego. On 9 June 1948, by her Decree No. 17040, the "Antarctic and Malvinas Division" was created under authority of the Argentine Ministry of Foreign Affairs.

A caterpillar tractor (a Tucker Sno-Cat) from the first Argentine expedition that reached the South Pole in 1965.

The first continental Argentine base in Antarctica, the Almirante Brown Naval detachment, was opened in 1951. The following year, the Esperanza Naval detachment (now Esperanza Base) opened. On 1 February 1952, while building the Esperanza Base at Hope Bay, the first shooting war in Antarctica occurred when an Argentine team fired a machine gun over the heads of a civil team of British Falkland Islands Dependencies Survey workers and forced them to withdraw back to their ship, the John Biscoe.[24][25]

On 17 January 1953, at Deception Island, the Refugio Teniente Lasala (a hut and a tent) was opened by the staff of the Argentine ship ARA Chiriguano. On 15 February, 32 Royal Marines of the British frigate HMS Snipe, armed with Sten submachine guns, rifles, and tear gas, captured two Argentine sailors. The Argentine refuge and a nearby uninhabited Chilean hut were destroyed. The Argentine sailors were delivered on a British vessel to South Georgia on 18 February.[26] A British detachment stayed three months on the island while the frigate patrolled the waters until April.

On 4 May 1955, the United Kingdom filed two lawsuits against Argentina and Chile respectively, in the International Court of Justice in The Hague to declare Argentine and Chilean claims on the Antarctic and sub-Antarctic areas invalid. On 15 July 1955, the Chilean Government rejected the jurisdiction of the Court in that case, and on 1 August, the Argentine Government did the same.[27]

On 1 December 1959, the Antarctic Treaty was signed by Argentina, Australia, Belgium, Chile, France, Japan, New Zealand, Norway, South Africa, the Union of Soviet Socialist Republics, the United Kingdom, and the United States, entering into force on 23 June 1961.

In the 1960s, Argentina, with its fleet, began conducting ecological tourist cruises to Antarctica. At the same time, the Argentine state-owned Aerolíneas Argentinas began passenger flights between Ushuaia and Sydney, landing at Marambio Base. Between the mid-1960s and the first half of the 1970s, Argentina launched rockets from its Antarctic bases. These rockets were designed and built in Argentina and possessed meteorological instrumentation and radiation sensors.

Operación 90 was the first Argentine ground expedition to the South Pole. It was conducted in 1965 by ten soldiers of the Argentine Army under then-Colonel Jorge Edgard Leal. The operation was named for the target 90 degree South latitude point (the geographic South Pole).[28]

Esperanza Base on Trinity Peninsula in 2012.

On 8 April 1970, the Governor of Tierra del Fuego issued Decree No. 149 creating four new departments, among them the Argentine Antarctic Sector Department.

In 1977, the Esperanza Base was chosen as a place for Argentine families that spent their winters in Antarctica to live. The first director of the Argentine Antarctic Institute, general Hernán Pujato, was the forerunner of the installation of the Fortín Sargento Cabral. On 13 August 1954, he proposed that the Argentine government create homes near Esperanza Base to populate with families with a goal of strengthening Argentine rights in that part of Antarctica. After finishing the construction of the houses, the Fortín Sargento Cabral was established on 17 February 1978 with five houses.

The first documented person born in Antarctica was the Argentine Emilio Palma at Esperanza Base in 1978. His baptism in the Catholic chapel on 7 January 1978 was the first documented baptism on the continent.

On 18 December 2012, the Foreign & Commonwealth Office of the United Kingdom announced that the southern part of the British Antarctic Territory (which included a portion of Argentine Antarctica) would be named Queen Elizabeth Land in honor of Queen Elizabeth II. Argentina opposed Britain's decision to rename the area.[29]

In 2013, the Argentine Defense Ministry announced that Petrel Base would become a permanent base by 2015. The base will have an airport and facilities to transfer passengers and cargo.[30][31]

Geography
Watercraft in Hope Bay, Antarctica.
See also: Geography of the British Antarctic Territory and Geography of Antarctica

The geographic structure of Argentine Antarctica shares some features with Patagonia, located to the north of it. The highest peaks are located at the south of the Antarctic Peninsula, which has islands and archipelagos nearby. The land is under an ice sheet.

Climate
Main article: Climate of Antarctica

The climate of the region ranges from a subpolar climate in the north to a polar climate in the south.[32] The region has an extremely cold climate, with mean temperatures below 0 °C (32 °F) with frost and snowfall occurring throughout the year.[33] In general, there are two different climatic zones found within the region: a glacial climate in the interior and an oceanic one in the Antarctic Peninsula and adjacent islands.[33] The glacial climate found in the interior is dominated by continental ice sheets and glaciers, while in the Antarctic Peninsula and its adjacent islands, the climate is characterized by very strong winds, particularly in winter.[33] In particular, the Antarctic Peninsula experiences strong cold winds and blizzards.[34] In the interior of the continent, the climate is colder and drier due to the higher latitude, altitude, and strong continental influences.[34] Mean annual temperatures range from −10 to −20 °C (14 to −4 °F) in the Antarctic Peninsula to −30 to −50 °C (−22 to −58 °F) in the interior.[34] Temperatures are always low in the region; during the polar night in winter, temperatures drop down to −42 °C (−44 °F).[33] In the warmest month, mean temperatures are usually below 0 °C (32 °F).[33] Coastal areas have mean temperatures in the warmest month at around freezing.[34] Precipitation mainly falls as snow.[33] Due to the ice sheets and glaciers covering most of the region and the severity of the climate, the flora is sparse and limited only to coastal areas.[33]

Average Temperatures in selected locations in °C (°F)
    Jan        Feb        Mar        Apr        May        Jun        Jul        Aug       Sept       Oct        Nov        Dec      Annual  
Orcadas Base[35] 1.4 (34.5) 1.4 (34.5) 0.4 (32.7) −1.8 (28.8) −4.6 (23.7) −7.9 (17.8) −9.3 (15.3) −7.8 (18.0) −5.4 (22.3) −2.8 (27.0) −0.7 (30.7) 0.6 (33.1) −3.0 (26.6)
Esperanza Base[35] 1.4 (34.5) 0.7 (33.3) −2.3 (27.9) −6.1 (21.0) −8.2 (17.2) −10.4 (13.3) −10.5 (13.1) −9.0 (15.8) −6.5 (20.3) −4.3 (24.3) −1.1 (30.0) 0.8 (33.4) −4.6 (23.7)
Marambio Base[35] −0.8 (30.6) −2.0 (28.4) −6.1 (21.0) −10.8 (12.6) −12.8 (9.0) −14.7 (5.5) −14.7 (5.5) −13.1 (8.4) −10.1 (13.8) −7.6 (18.3) −3.6 (25.5) −1.2 (29.8) −8.1 (17.4)
San Martín Base[35] 2.0 (35.6) 0.9 (33.6) −1.2 (29.8) −3.3 (26.1) −5.3 (22.5) −9.3 (15.3) −11.6 (11.1) −11.5 (11.3) −8.9 (16.0) −5.9 (21.4) −2.0 (28.4) 0.8 (33.4) −4.6 (23.7)
Belgrano II Base[35] −2.4 (27.7) −7.0 (19.4) −12.0 (10.4) −16.7 (1.9) −18.1 (−0.6) −19.1 (−2.4) −20.4 (−4.7) −20.2 (−4.4) −18.4 (−1.1) −14.8 (5.4) −8.0 (17.6) −3.0 (26.6) −13.3 (8.1)
Average Precipitation in selected locations in mm (in)
    Jan        Feb        Mar        Apr        May        Jun        Jul        Aug       Sept       Oct        Nov        Dec      Annual  
Orcadas Base[36] 136.9 (5.39) 143.2 (5.64) 169.4 (6.67) 121.2 (4.77) 108.0 (4.25) 81.5 (3.21) 77.5 (3.05) 94.5 (3.72) 85.6 (3.37) 89.1 (3.51) 91.9 (3.62) 109.7 (4.32) 1,308.5 (51.52)
Esperanza Base[36] 38.0 (1.50) 49.9 (1.96) 72.8 (2.87) 49.0 (1.93) 47.7 (1.88) 39.3 (1.55) 40.3 (1.59) 47.4 (1.87) 49.6 (1.95) 50.4 (1.98) 51.0 (2.01) 39.4 (1.55) 574.8 (22.63)
Marambio Base[36] 44.4 (1.75) 55.1 (2.17) 51.5 (2.03) 26.1 (1.03) 24.6 (0.97) 13.9 (0.55) 17.8 (0.70) 17.6 (0.69) 30.7 (1.21) 18.1 (0.71) 28.0 (1.10) 35.0 (1.38) 362.8 (14.28)
San Martín Base[36] 13.8 (0.54) 46.5 (1.83) 48.3 (1.90) 33.1 (1.30) 34.4 (1.35) 28.0 (1.10) 39.4 (1.55) 36.4 (1.43) 40.9 (1.61) 32.2 (1.27) 30.4 (1.20) 27.0 (1.06) 410.4 (16.16)
Belgrano II Base[36] 26.2 (1.03) 27.4 (1.08) 32.5 (1.28) 16.8 (0.66) 22.5 (0.89) 25.0 (0.98) 27.8 (1.09) 26.9 (1.06) 39.0 (1.54) 20.2 (0.80) 18.2 (0.72) 17.0 (0.67) 299.5 (11.79)

Symbols
See also: Flags of Antarctica
The flag of Tierra del Fuego

The flag of Tierra del Fuego, which includes Argentine Antarctica, was adopted in 1999 as the result of a competition.[37] It is a diagonal bicolor flag of sky blue and orange with a white albatross dividing the flag diagonally and the Southern Cross constellation in the blue upper half. The orange represents the fire in the province's name, while the blue represents the sky and reflects the color of the national flag.[38]

Argentine bases
Argentine bases on Antarctica (permanent bases in red).
The icebreaker Almirante Irizar, the principal supply line for Argentine bases in Antarctica since 1978.

Esperanza and Marambio are the largest Argentine bases, together holding 70 buildings, with a combined occupancy rate ranging from roughly 110 in winter to 250 in summer. Orcadas Base on the South Orkney Islands was the world's first Antarctic base, operating continuously since 1903. The southernmost Argentine permanent base is Belgrano II, at around 77 latitudinal degrees south. The southernmost summer base is Sobral, 1,450 km (901 mi) from Belgrano II.

The bases are supplied by ships as well as by C-130 Hercules and DHC-6 Twin Otter aircraft.

The Argentine Navy devotes considerable resources to its annual Antarctic missions. In 2022/23, the auxiliary vessels Puerto Argentino and Estrecho San Carlos were tasked to the mission, along with the icebreaker Almirante Irízar.[39] These vessels were supported by Argentine Navy Sea King helicopters.[40]

As of mid-2023, Argentina was in discussions with Finland to build a new polar logistics vessel, the "ARC 133". The ship is to be a Polar 4 class vessel (year-round operation in thick first-year ice, which may include old ice inclusions) and is envisaged for completion by the latter 2020s.[41]

Permanent bases

Seasonal bases

Camps, huts and other establishments
Groussac hut on Petermann Island.

There are 64 other establishments in Argentine Antarctica.

Argentina's claim to the Antarctic Peninsula overlaps with the Antarctic claims of Chile, 53°W to 90°W, and the UK claims, 20°W to 80°W.

Currently, there are no attempts by Argentina or any other country to enforce territorial claims in Antarctica. See List of Antarctic territorial claims.

None of these claims have widespread international recognition.

Demographics
Children, teenagers and teachers of the school of Esperanza Base.
See also: Demographics of Antarctica

In 1978, the first Antarctic baby was born in the Fortín Sargento Cabral at the Esperanza Base. He was named Emilio Palma.[42] María de las Nieves Delgado was the first Antarctic girl, born on 27 March 1978 at Esperanza Base. By 1980, six more children were born at the base: Rubén Eduardo de Carli (21 September 1979), Francisco Javier Sosa (21 September 1979), Silvina Analía Arnouil (14 January 1980), José Manuel Valladares Solís (24 January 1980), Lucas Daniel Posse (4 February 1980) and María Sol Cosenza (3 May 1983).[43][44] The base has an Argentine civil registry office where there have been births and weddings.[45]

In 1991, there were 142 permanent residents, including 19 minors. These residents are families that live in Antarctica or scientists that have lived there for more than two years. There were 121 men and 21 women that lived mostly near Esperanza and other bases. As of 1998–1999, Argentine Antarctica had a winter population of 165.

See also
Antarctic office in Ushuaia.

References
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Bibliography
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