In January 1998, the collaborative ice-drilling project between Russia, the United States, and France at the Russian Vostok station in East Antarctica yielded the deepest ice core ever recovered, reaching a depth of 3,623 m (Petit et al. 1997, 1999). Preliminary data indicate the Vostok ice-core record extends through four climate cycles, with ice slightly older than 400 kyr (Petit et al. 1997, 1999). Download Vostok Data Some publication references for the data and research are: Petit, J.R., J. Jouzel, D. Raynaud, N.I. Barkov, J.-M. Barnola, I. Basile, M. Benders, J. Chappellaz, M. Davis, G. Delayque, M. Delmotte, V.M. Kotlyakov, M. Legrand, V.Y. Lipenkov, C. Lorius, L. Pépin, C. Ritz, E. Saltzman, and M. Stievenard. 1999. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399: 429-436. Petit, J.R., I. Basile, A. Leruyuet, D. Raynaud, C. Lorius, J. Jouzel, M. Stievenard, V.Y. Lipenkov, N.I. Barkov, B.B. Kudryashov, M. Davis, E. Saltzman, and V. Kotlyakov. 1997. Four climate cycles in Vostok ice core. Nature 387: 359-360. Brook, E.J., Kurz, M.D., Curtice, J., and Cowburn, S., 2000, Accretion of Interplantary Dust in Polar Ice, Geophysical Research Letters, Vol. 27, No. 19, p. 3145. C. Lorius, J. Jouzel, C. Ritz, L. Merlivat, N. I. Barkov, Y. S. Korotkevitch and V. M. Kotlyakov, A 150,000-year climatic record from Antarctic ice, Nature, 316, 1985, 591-596. J. Jouzel, C. Lorius, J. R. Petit, C. Genthon, N. I. Barkov, V. M. Kotlyakov and V. M. Petrov, Vostok ice core: a continuous isotope temperature record over the last climatic cycle (160,000 years), Nature, 329, 1987, 402-408. J. R. Petit, L. Mounier, J. Jouzel, Y. Korotkevitch, V. Kotlyakov and C. Lorius, Paleoclimatological implications of the Vostok core dust record, Nature, 343, 1990, 56-58. C. Ritz. Un modele thermo-mecanique d'evolution pour le bassin glaciaire Antarctique Vostok-Glacier Byrd: sensibilite aux valeurs des parametres mal connus (Univ. de Grenoble, 1992). T. Sowers, M. Bender, L. D. Labeyrie, J. Jouzel, D. Raynaud, D. Martinson and Y. S. Korotkevich, 135 000 year Vostok - SPECMAP common temporal framework., Paleoceanogr., 8, 1993, p. 737-766. J. Jouzel, N. I. Barkov, J. M. Barnola, M. Bender, J. Chappelaz, C. Genthon, V. M. Kotlyakov, V. Lipenkov, C. Lorius, J. R. Petit, D. Raynaud, G. Raisbeck, C. Ritz, T. Sowers, M. Stievenard, F. Yiou and P. Yiou, Extending the Vostok ice-core record of paleoclimate to the penultimate glacial period, Nature, 364, 1993, 407-412. C. Waelbroeck, J. Jouzel, L. Labeyrie, C. Lorius, M. Labracherie, M. Stievenard and N. I. Barkov, Comparing the Vostok ice deuterium record and series from Southern Ocean core MD 88-770 over the last two glacial-interglacial cycles, Clim. Dyn., 12, 1995, 113 - 123. J. Jouzel, C. Waelbroeck, B. Malaizé, M. Bender, J. R. Petit, N. I. Barkov, J. M. Barnola, T. King, V. M. Kotlyakov, V. Lipenkov, C. Lorius, D. Raynaud, C. Ritz and T. Sowers, Climatic interpretation of the recently extended Vostok ice records, Clim.Dyn., In press. Ruddiman, W.F. and M.E. Raymo. 2003. A methane-based time scale for Vostok ice. Quaternary Science Reviews, Volume 22, Issues 2-4, February 2003, Pages 141-155. Shackleton, N.J.. 2000. The 100,000-year ice-age cycle identified and found to lag temperature, carbon dioxide, and orbital eccentricity. Science 289: 1897-1902.