Trapped Gas Composition and Chronology of the Vostok Ice Core
Data DOI:
https://doi.org/10.7265/N5P26W12
Cite as
Bender, M., & Suwa, M. (2007) "Trapped Gas Composition and Chronology of the Vostok Ice Core" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N5P26W12.
AMD - DIF Record(s)
Abstract
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 (O<sub>2</sub>/N<sub>2</sub>) 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 O<sub>2</sub>/N<sub>2</sub>. Thus for the shallower section of the core, they synchronized the Vostok delta oxygen-18 (δ<sup>18</sup>O) and methane (CH<sub>4</sub>) measurements to those of the GISP2 to obtain the chronology (see Bender, et al. 2006). Note, CH<sub>4</sub> data are not included in this data set.
Investigators analyzed the O<sub>2</sub>/N<sub>2</sub> and the<em><strong> </strong></em>δ<sup>18</sup>O record ratios for approximately the past 115,000 to 400,000 years in the Vostok ice core. They combined new measurements for O<sub>2</sub>/N<sub>2</sub> and δ<sup>18</sup>O with data from Bender (2002) and Petit, et al. (1999), respectively.
Data are in Microsoft Excel format and are available via FTP.
Creator(s):
Bender, Michael;
Suwa, Makoto
Date Created:
2007-07-10
Repository:
USAP-DC (current)
- NSIDC (original)
Spatial Extent(s)
West: 106.8, East: 106.8, South: -72.4667, North: -72.4667
Temporal Extent(s)
Start: 2003-09-01 - End: 2006-06-30
Award(s)
Version:
1
Related Project(s)
References
Keywords
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MD5 Checksum: 2767602911b3fe962f6eba0293897d13 File Type: Microsoft Excel
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