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Ice cores at Vostok, with a portion of the station behind. Vostok Station was established on 16 December 1957 (during the International Geophysical Year) by the 2nd Soviet Antarctic Expedition and was operated year-round for more than 72 years. [6]
Vostok 3 was the first core to retrieve ice from the previous glacial period, 150,000 years ago. [113] Drilling was interrupted by a fire at the camp in 1982, but further drilling began in 1984, eventually reaching 2546 m in 1989. A fifth Vostok core was begun in 1990, reached 3661 m in 2007, and was later extended to 3769 m.
The EPICA and Vostok cores compared. This site (, 3233 m above sea level, 560 km from Vostok Station) was chosen to obtain the longest undisturbed chronicle of environmental change, in order to characterise climate variability over several glacial cycles, and to study potential climate forcings and their relationship to events in other regions
Lake Vostok (Russian: озеро Восток, romanized: ozero Vostok) is the largest of Antarctica's 675 known [3] subglacial lakes.Lake Vostok is located at the southern Pole of Cold, beneath Russia's Vostok Station under the surface of the central East Antarctic Ice Sheet, which is at 3,488 m (11,444 ft) above mean sea level.
Variations of cycle times, curves determined from ocean sediments. 420,000 years of ice core data from Vostok, Antarctica research station, with more recent times on the left. From 1–3 million years ago, climate cycles matched the 41,000-year cycle in obliquity.
In 1999 he was the lead author of a study published in Nature, "Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica." [1] The paper presented the first long climate record from the ice. It provided a continuous record of temperature and atmospheric composition.
A δ 18 O record for the past 140,000 years from Greenland and Antarctica (EPICA, Vostok) ice cores. The geologic temperature record can be reconstructed from sedimentary evidence. Perhaps the most useful paleotemperature indicator of past climate is the fractionation of oxygen isotopes, denoted δ 18 O.
Graph of reconstructed temperature (blue), CO 2 (green), and dust (red) from the Vostok Station ice core for the past 420,000 years. To geologists, an ice age is defined by the presence of large amounts of land-based ice.