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The paleoclimate record in the ice core at Dome Fuji station, East Antarctica

  • Okitsugu Watanabe (a1), Kokichi Kamiyama (a1), Hideaki Motoyama (a1), Yoshiyuki Fujii (a1), Hitoshi Shoji (a2) and Kazuhide Satow (a3)...
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 palco-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 withVostok ice-core data in general but not in detail. Detailed analysis of these climatic and environmental signals is in progress.

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References
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Dome-F Deep Coring Group. 1998. Deep ice-core drilling at Dome Fuji and glaciological studies in east Dronning Maud Land, Antarctica. Ann. Glaciol., 27,333-337.
Dome-F Ice Core Research Group. 1998. Preliminary investigation of palaeoclimate signals recorded in the ice core from Dome Fuji station, east Dronning Maud Land, Antarctica. Ann. Glaciol., 27, 338-342.
Petit, J.-R., Mounier, L., Jouzel, J., Korotkevich, Ye. S., Kotlyakov, V. M. and Lorius, C.. 1990. Palaeoclimatological and chronological implications of the Vostok core dust record. Nature, 343(6253), 56-58.
Thompson, L.G. and Mosley-Thompson, E.. 1981. Microparticle concentration variations linked with climatic change: evidence from polar ice cores. Science, 212(4496), 812-815
Watanabe, O. and 13 others. 1997. Preliminary report on analyses of melted Dome Fuji core obtained in 1993. Proc. NIPR Symp. Polar Meteorol. Glaciol. 11, 14-23.
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Annals of Glaciology
  • ISSN: 0260-3055
  • EISSN: 1727-5644
  • URL: /core/journals/annals-of-glaciology
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