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Trapped Gas Composition and Chronology of the Vostok Ice Core, Version 1

This data set includes a time scale for the Vostok ice core, retrieved from Vostok Station on the East Antarctic Plateau. This chronology is derived by orbitally tuning to molecular oxygen to nitrogen (O2/N2) ratios in occluded air for depths deeper than 1550 m (greater than 112,000 years old), and by gas correlation to the Greenland Ice Sheet Project 2 (GISP2) chronology for the ice core section that is shallower than 1422 m (less than 102,000 years old). Because of poor gas preservation in air bubbles in shallower depths, investigators could only constrain the Vostok chronology for the section deeper than 1550 m by O2/N2. Thus for the shallower section of the core, they synchronized the Vostok delta oxygen-18 (δ18O) and methane (CH4) measurements to those of the GISP2 to obtain the chronology (see Bender, et al. 2006). Note, CH4 data are not included in this data set.

Investigators analyzed the O2/N2 and the δ18O record ratios for approximately the past 115,000 to 400,000 years in the Vostok ice core. They combined new measurements for O2/N2 and δ18O with data from Bender (2002) and Petit, et al. (1999), respectively.

Data are in Microsoft Excel format and are available via FTP.

Geographic Coverage

Spatial Coverage:
  • N: -72.4667, S: -72.4667, E: -106.8, W: -106.8

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 September 2003 to 30 June 2006
Temporal Resolution: Not specified
  • Ice Core Records > Ice Core Air Bubbles > Gas Age
  • Ice Core Records > Ice Core Air Bubbles > Ice Age
  • Snow/Ice > Ice Depth/Thickness
  • Atmospheric Chemistry > Nitrogen Compounds
  • Atmospheric Chemistry > Oxygen Compounds
  • Ocean/Lake Records > Oxygen Isotopes
Platform(s) LABORATORY
Data Format(s):
  • Microsoft Excel
Version: V1
Data Contributor(s): Michael Bender, Makoto Suwa

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Bender, M. and M. Suwa. 2007. Trapped Gas Composition and Chronology of the Vostok Ice Core, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: [Date Accessed].