Climate of the penultimate ice age: A study of an Antarctic ice core

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Abstract
Climatic conditions of the Penultimate Ice Age are analyzed on the basis of isotopic‐geochemical analyses of an ice core from the Vostok Antarctic research station. Data from the core, which includes material from as deep as 2546 m, permits the compilation of a chronology of glacial sediments and determination of time changes in air temperature and in gas composition of the former atmosphere; it also provides the basis for comparisons with information derived from oceanic cores. This makes possible interpretation of past climates in East Antarctica as far back as 200,000 years B.P., indicating that a long cold period similar to the last Ice Age occurred in the region from 140,000–220,000 years B.P.