Argentine Antarctica

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75°00′S 49°30′W / 75.000°S 49.500°W / -75.000; -49.500

Argentine Antarctica Antártida Argentina
Department
Argentine Antarctica map since 1950. Orcadas base from 1904.
Governor		Gustavo Melella
Area
• Total	1,461,597 km² (564,326 sq mi)
• Land	965,597 km² (372,819 sq mi)
	^[1]
Population (2010 Census)^[1]^[2]
• Total	469
• Density	0.00032/km² (0.00083/sq mi)
Time zone	UTC-3
Argentine Postal Code	9411
Area codes	0054 + 02901 Esperanza and Marambio Stations: 0054 + 02964
First base	Orcadas Base (1904)^[3]
Number of bases	13 bases (6 permanents and 7 seasonals) 64 others (huts, refuges, camps)
Website	DNA.gov.ar

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. None of these claims have widespread international recognition.

Argentina's Antarctic claim is based on its presence on a base on

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.

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

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, began 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. Brown claimed to have 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

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

Julián Irizar to find and rescue members of the expedition

who had been sheltering following the collapse of the Antarctic ship.

A hut was built on Snow Hill Island in 1902. The Argentine Navy took possession of the hut in 1954 and named it Refugio Suecia. It is now 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

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] an event commemorated in Argentina as the Day of the Argentine Antarctic.^[20]

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.^[21]

The Argentine Government established two meteorological observatories on

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.^[22]^[23]^[24]

On 30 March 1927, the first radiotelegraph station in Antarctica was inaugurated on the 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

British flag.^{[citation needed}

] 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.^{[citation needed}

]

The first continental Argentine base in Antarctica, the Almirante Brown Naval detachment, was opened in 1951. The following year, the Esperanza Naval detachment (now

Falkland Islands Dependencies Survey workers and forced them to withdraw to their ship, the John Biscoe.^[25]^[26]

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.^[27] 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.^[28]

On 1 December 1959, the

Antarctic Treaty

was signed by Argentina, Australia, Belgium, Chile, France, Japan, New Zealand, Norway, South Africa, the Soviet Union, 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).^[29]

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 to house Argentine families that spent their winters in Antarctica. 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.^[30]

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.^[31]^[32]

Geography

The geographic structure of Argentine Antarctica shares some features with Patagonia, located to the north. 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

The climate of the region ranges from a

glaciers, while in the Antarctic Peninsula and its adjacent islands, the climate is characterized by very strong winds, particularly in winter.^[34] In particular, the Antarctic Peninsula experiences strong cold winds and blizzards.^[35] In the interior of the continent, the climate is colder and drier due to the higher latitude, altitude, and strong continental influences.^[35] 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.^[35] Temperatures are always low in the region; during the polar night in winter, temperatures drop to −42 °C (−44 °F).^[34] In the warmest month, mean temperatures are usually below 0 °C (32 °F).^[34] Coastal areas have mean temperatures in the warmest month at around freezing.^[35] Precipitation mainly falls as snow.^[34] 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.^[34]

**Average Temperatures in selected locations in °C (°F)**
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec	Annual
Orcadas Base^[36]	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^[36]	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^[36]	−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^[36]	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^[36]	−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^[37]	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^[37]	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^[37]	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^[37]	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^[37]	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

The flag of Tierra del Fuego, which includes Argentine Antarctica, was adopted in 1999 as the result of a competition.

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.^[39]

Argentine bases

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 is 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 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.^[40] These vessels were supported by Argentine Navy Sea King helicopters.^[41]

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.^[42]

Permanent bases

Belgrano II (77°52′S 34°37′W / 77.867°S 34.617°W / -77.867; -34.617
), laboratory and meteorological station; southernmost Argentine base (since 1979)

Belgrano III (77°54′02″S 45°47′01″W / 77.90056°S 45.78361°W / -77.90056; -45.78361
) (closed)

Esperanza (63°24′S 57°00′W / 63.400°S 57.000°W / -63.400; -57.000), Hope Bay
- Laboratory and meteorological station (since 1952)
- Radio LRA36 Nacional Arcángel San Gabriel, School #38 Presidente Raúl Ricardo Alfonsín (since 1978)
- Catholic Chapel, Post, Gym, Civil registration, port, tourist facilities
King George Island
Marambio Base Station (64°14′S 56°37′W / 64.233°S 56.617°W / -64.233; -56.617), Seymour-Marambio Island
- Laboratory, meteorological station
- Airport, 1.2 km long, 30m wide runway (since 1969) (Website)
Orcadas Base (60°44′S 44°44′W / 60.733°S 44.733°W / -60.733; -44.733), South Orkney Islands (since 1903)
San Martín Base (68°08′S 67°06′W / 68.133°S 67.100°W / -68.133; -67.100), laboratory and meteorological station (since 1951)

Seasonal bases

Camps, huts and other establishments

There are 64 other establishments in Argentine Antarctica.

Base Alférez de Navío Sobral (1965) 81°05′S 40°00′W / 81.083°S 40.000°W / -81.083; -40.000, Edith Ronne Land (closed)
Estación Científica Ellsworth (ex US) (1958) 77°45′S 41°00′W / 77.750°S 41.000°W / -77.750; -41.000, Weddell Sea
(closed)

Refuge Francisco de Gurruchaga 62°15′S 59°00′W / 62.250°S 59.000°W / -62.250; -59.000, Nelson Island (open as hut)
King George Island
(open as hut)
Filchner-Ronne Ice Shelf
(closed)
Filchner-Ronne Ice Shelf
(closed)
Camp Livingston 62°39′22″S 61°00′39″W / 62.65611°S 61.01083°W / -62.65611; -61.01083, Byers Peninsula, Livingston Island
Refugio Suecia 63°22′S 56°59′W / 63.367°S 56.983°W / -63.367; -56.983, Snow Hill Island (built in February 1902 by the Swedish South Polar Expedition)
Refuge Abrazo de Maipú 63°20′45″S 57°33′12″W / 63.34583°S 57.55333°W / -63.34583; -57.55333, Trinity Peninsula (administered between Chile and Argentina)

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

In 1978, the first Antarctic baby was born in the Fortín Sargento Cabral at the Esperanza Base. He was named Emilio Palma.^[43] 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).^[44]^[45] The base has an Argentine civil registry office where there have been births and weddings.^[46]

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.^{[citation needed]}^{[needs update]}