The paleoclimate record in the ice core at Dome Fuji station, East Antarctica
Abstract:The Antarctic ice sheet preserves paleoclimate information in the form of physical and chemical stratigraphy. A deep ice core down to 2503 m depth was drilled at Dome Fuji station, East Antarctica, during the 1993–96 Japanese Antarctic Research Expedition inland operations. Oxygen isotope measurements were conducted on 50 cm long samples selected from the entire core length. A paleo-temperature profile was obtained for the past 340 ka by assuming the same conversion factors for the past relation as exist today between isotope ratio and both surface temperature and accumulation rate, in the inland region of Dronning Maud Land. The environmental-index profiles such as major chemical and dust contents coincide quite well with Vostok ice-core data in general but not in detail. Detailed analysis of these climatic and environmental signals is in progress.
Document Type: Research Article
Publication date: June 1, 1999
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