USAP-DC

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Siple Dome Core Date from Measurement of the d18O of Paleoatmospheric Oxygen Data DOI: https://doi.org/10.7265/N5TX3C95 Cite as Bender, M., & White, J. (2003) "Siple Dome Core Date from Measurement of the d18O of Paleoatmospheric Oxygen" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N5TX3C95. AMD - DIF Record(s) NSIDC-0123_1 Abstract This data set is part of the West Antarctic Ice Sheet Cores (WAISCORES) project, an NSF-funded project to understand the influence of the West Antarctic ice sheet on climate and sea level change. WAISCORES researchers acquired and analyzed ice core samples from the Siple Dome, in the Siple Coast region, West Antarctica. This data set includes a timescale record for the Siple Dome ice core. This chronology is derived by measuring the delta oxygen-18 of paleoatmospheric oxygen (&delta;<sup>18</sup>O<sub>atm</sub>) then correlating those measurements to the Greenland Ice Sheet Project 2 (GISP2) record by adjusting the Siple Dome timescale so that its curve of &delta;<sup>18</sup>O<sub>atm</sub> coincided with that of GISP2. The replicate samples were measured at 1 to 1.5 kiloyear (kyr) resolution for the length of the core. Because of core relaxation and cracking at the surface associated with gas loss and a small fractionation of O isotopes associated with loss of O<sub>2</sub>, the &delta;<sup>18</sup>O<sub>atm</sub> timescale and accuracy of the constraints of the Siple Dome control depths are subject to limited error. Data are available via FTP in Microsoft Excel (.xls) and Word (.doc) file formats. Creator(s): Bender, Michael Date Created: 2003-06-16 Repository: USAP-DC (current) - NSIDC (original) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: -149, East: -149, South: -81, North: -81 Temporal Extent(s) Start: 1996-01-01 - End: 1999-12-31 Award(s) NSF 9526979 Version: 1 Related Project(s) Isotopic Measurements on the WAIS/Siple Dome Ice Cores References Bender, M. L., G. Floch, J. Chappellaz, M. Suwa, J. M. Barnola, T. Blunier, G. Dreyfus, J. Jouzel, and F. Parrenin. 2006. Gas Age–Ice Age Differences and the Chronology of the Vostok Ice Core, 0–100 ka. Journal of Geophysical Research 111:D21115: doi:10.1029/2005JD006488. (doi:10.1029/2005JD006488) Bender, M. L., B. Malaize, J. Orchardo, T. Sowers, and J. Jouzel. 1999. High Precision Correlations of Greenland and Antarctic Ice Core Records Over the Last 100 kyr. In Mechanisms of Global Climate Change, eds. P. U. Clark, R. S. Webb, and L. D. Keigwin. American Geophysical Union Geophysical Monograph 112:149–164. Brook, E. J., J. W. C. White, A. Schilla, M. Bender, B. Barnett, J. Severinghaus, K. Taylor, R. Alley, and E. Steig. 2005. Timing of Millennial-scale Climate Change at Siple Dome, West Antarctica, During the Last Glacial Period. Quaternary Science Reviews 24:1333-1343: doi:10.1016/j.quascirev.2005.02.002. (doi:10.1016/j.quascirev.2005.02.002) Schilla, A. 2007. The Stable Isotopes and Deuterium Excess from the Siple Dome Ice Core: Implications for the Late Quaternary Climate and Elevation History of the Ross Sea Region, West Antarctica. Ph.D. Dissertation, Department of Geological Sciences, University of Colorado. Schilla, A., T. Popp, J. W. C. White, M. Bender, E. Brook, E. Steig, and K. Taylor. 2002. Stable Isotope Record From Siple Dome, Antarctica. Eos, Transactions, American Geophysical Union 83(19):A32B-12. Sowers, T., M. Bender, and D. Raynaud. 1989. Elemental and Isotopic Composition of Occluded O2 and N2 in Polar Ice. Journal of Geophysical Research 94: 5137-5150. (doi:10.1029/JD094iD04p05137) Keywords Antarctica Chemistry:ice Geochemistry Glaciers/ice Sheet Glaciology Ice Core Records Paleoclimate Siple Dome Siple Dome Ice Core WAISCORES