Operation Deep Freeze

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Antarctic expeditions
International agreements
1932 (1932)–1933: International Polar Year 1957 (1957)–1958: International Geophysical Year 1959 (1959)–present: Antarctic Treaty System
Belgium
1897 (1897)–1899: Belgian Antarctic Expedition
British Empire / Commonwealth
1898 (1898)–1900: Southern Cross Expedition 1901 (1901)–1904: Scott's first expedition 1902 (1902)–1904: Scottish National Antarctic Expedition 1907 (1907)–1909: Shackleton's first expedition 1910 (1910)–1913: Scott's second expedition 1911 (1911)–1914: Mawson's first expedition 1914 (1914)–1917: Shackleton's second expedition 1921 (1921)–1922: Shackleton's third expedition 1929 (1929)–1931: Mawson's second expedition 1934 (1934)–1937: Graham Land expedition 1943 (1943)–1945: Operation Tabarin 1955 (1955)–1958: Trans-Antarctic Expedition
Germany
1901 (1901)–1903: Drygalski (Gauss) expedition 1911 (1911)–1912: Filchner expedition 1938 (1938)–1939: New Swabia expedition
Sweden
1901 (1901)–1904: Swedish Antarctic Expedition
France
1903 (1903)–1905: Charcot's first expedition 1908 (1908)–1910: Charcot's second expedition
Japan
1910 (1910)–1912: Japanese Antarctic Expedition
Norway
1910 (1910)–1912: Amundsen expedition 1956 (1956)–1960: 6th Norwegian Antarctic Expedition 1957 (1957)–1958: Luncke expedition
United States
1928 (1928)–1930: Byrd's first expedition 1934 (1934): Byrd's second expedition 1939 (1939)–1941: United States Antarctic Service Expedition 1946 (1946)–1947: Operation Highjump 1947 (1947)–1948: Operation Windmill 1947 (1947)–1948: Ronne expedition 1955 (1955)–1956: Operation Deep Freeze
Soviet Union
1955 (1955)–1957: 1st Soviet Antarctic Expedition 1956 (1956)–1958: 2nd Soviet Antarctic Expedition
International
1949 (1949)–1952: NBSX (Maudheim Expedition)
v t e

Operation Deep Freeze is codename for a series of United States missions to Antarctica, beginning with "Operation Deep Freeze I" in 1955–56, followed by "Operation Deep Freeze II", "Operation Deep Freeze III", and so on. (There was an initial operation before Admiral Richard Byrd proposed 'Deep Freeze'). Given the continuing and constant US presence in Antarctica since that date, "Operation Deep Freeze" has come to be used as a general term for US operations in that continent, and in particular for the regular missions to resupply US Antarctic bases, coordinated by the United States military. Task Force 199 was involved.