Collaborative Research: Stable Isotopes of Ice in the WAIS Divide Deep Ice CoreEntry ID: white_0537593
Abstract: This data set contains the record of stable isotopes of hydrogen and oxygen in the WAIS Divide WDC06A core from West Antarctica. Samples have been analyzed at high resolution (nominal 3cm intervals) at INSTAAR, University of Colorado, using mass spectrometers. Oxygen isotopes (18O): 114.20-352.05 meters depth at approximately 3 cm resolution. Hydrogen isotopes (D/H): 114.20-197.23 meters depth ... at approximately 3 cm resolution. There are a few gaps in the data due to occasional analysis problems, and larger gaps where entire batch-runs went poorly. All of these are slated for re-runs. Samples are cut and prepared from 114.195-576.984 meters depth, but not yet analyzed and/or released for use as of 11-30-10.This work is supported by funding from the NSF Office of Polar Programs (NSF OPP ANT0537593), and links directly to work that Eric Steig and others at the University of Washington are doing on this core as well. Steig has measured this same core at a lower resolution for stable isotopes.
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Paleo Temporal Coverage
Latitude Resolution: 79° 28’ 1.2” S
Longitude Resolution: 112° 5’ 6.0” W
Horizontal Resolution Range: 1 meter - < 30 meters
Vertical Resolution: 3 cm
Vertical Resolution Range: Point Resolution
ISO Topic Category
Quality The high resolution Stable isotopic data in this data set were produced by mass spectrometry. The hydrogen isotopes were analyzed utilizing an automated uranium reduction system (Vaughn et al.1998) and a Micro Mass SIRA mass spec. Error associated with this measurement is less than ±1 per mil, and typically ± 0.6 per mil. The oxygen isotopes were analyzed using co2/h20 equilibration method (Epstein and Mayeda,1953) and a Micromass Optima mass spec. Error associated with this measurement is less than 0.1 per mil, and typically ±0.05 per mil.
Data Set Progress
Phone: 303 492 7909
Fax: 303 492 6388
Email: james.white at colorado.edu
Campus Box 450 University of Colorado
Province or State: Colorado
Postal Code: 80309
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
Steig, E.J.. "Is Recent Antarctic Warming Exceptional?," Geological Society of America Abstracts, 2009.
Steig, E.J. and White, J.W.C.. "The WAIS Divide Stable Isotope Record, El Nino, and West Antarctic Temperature," MOCA-09 IAMAS/IAPSO/IACS 2009 Joint Assembly, 2009.
Creation and Review Dates
DIF Creation Date: 2010-10-12
Last DIF Revision Date: 2010-12-07