Trapped Gas Composition and Chronology of the Vostok Ice CoreEntry ID: NSIDC-0311
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 (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.
Data Set Citation
Dataset Originator/Creator: Bender, M. and M. Suwa.
Dataset Title: Trapped Gas Composition and Chronology of the Vostok Ice Core
Dataset Series Name: NSIDC-0311
Dataset Release Date: 2007-07-10
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Dataset DOI: doi:10.7265/N5P26W12Online Resource: http://www.usap-dc.org/view/dataset/609311
Start Date: 2003-09-01Stop Date: 2006-06-30
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS
CLIMATE INDICATORS > CRYOSPHERIC INDICATORS > ICE DEPTH/THICKNESS
CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > ICE CORE RECORDS > ICE CORE AIR BUBBLES
CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS
CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS
OCEANS > SEA ICE > ICE DEPTH/THICKNESS
PALEOCLIMATE > OCEAN/LAKE RECORDS > OXYGEN ISOTOPES
TERRESTRIAL HYDROSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS
Data Set Progress
Distribution Media: FTP
Distribution Size: 281 KB
Distribution Format: Microsoft Excel
Bender, M. L. 2002. Orbital tuning chronology for the Vostok climate record supported by trapped gas composition. Earth and Planetary Science Letters 204(1), 275-289.
Petit, J. J., J. Jouzel, D. Raynaud, N. I. Barkov, J.-M. Barnola, I. Basile, M. Bender, et al. 1999. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399, 429-436.
Suwa, M. 2007. Chronologies for ice cores constrained by their gas records and their implications for climate history for the past 400,000 years. PhD thesis, Princeton University, Princeton, NJ.
Suwa, M., and M. Bender. In press. Chronology of the Vostok ice core constrained by O2/N2 ratios of occluded air, and its implication for the Vostok climate records. Quaternary Science Reviews.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-07-10
Last DIF Revision Date: 2017-08-24