WAIS Divide Deep ice core 0-68 ka WD2014 chronology Article Swipe
Michael Sigl
,
Christo Buizert
,
T. J. Fudge
,
Mai Winstrup
,
Jihong Cole‐Dai
,
Joseph R. McConnell
,
D. G. Ferris
,
Rachael H. Rhodes
,
K. C. Taylor
,
K. C. Welten
,
Thomas E. Woodruff
,
Florian Adolphi
,
Daniel Baggenstos
,
Edward J. Brook
,
Marc W. Caffee
,
Gary D. Clow
,
Hai Cheng
,
Kurt M. Cuffey
,
Nelia Dunbar
,
R. L. Edwards
,
Larry Edwards
,
Lei Geng
,
Nels Iverson
,
B. G. Koffman
,
Larry Layman
,
Bradley Markle
,
O. J. Maselli
,
Kenneth C. McGwire
,
Raimund Muscheler
,
K. Nishiizumi
,
D. R. Pasteris
,
Jeffrey P. Severinghaus
,
Todd Sowers
,
Eric J. Steig
·
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.1594/pangaea.902577
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.1594/pangaea.902577
The West Antarctic Ice Sheet (WAIS) Divide deep ice core WD2014 chronology, consisting of ice age, gas age, delta-age and uncertainties therein. The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation deep ice core that provides Antarctic climate records of the past ~68 ka at unprecedented temporal resolution.The upper 2850 m (back to 31.2 ka BP; Sigl et al., 2015, Sigl et al., 2016) have been dated using annual-layer counting based on counting of annual layers observed in the chemical, dust and electrical conductivity records. The measurements were interpreted manually and with the aid of two automated methods. We validated the chronology by comparing of the cosmogenic isotope records of 10Be from WAIS Divide and 14C for IntCal13. We demonstrated that over the Holocene WD2014 was consistently accurate to better than 0.5% of the age.The chronology for the deep part of the core (below 2850m; 67.8-31.2 ka BP; Buizert et al., 2015) is based on stratigraphic matching to annual-layer-counted Greenland ice cores using globally well-mixed atmospheric methane. We calculate the WD gas age-ice age difference (Delta age) using a combination of firn densification modeling, ice-flow modeling, and a data set of d15N-N2, a proxy for past firn column thickness. The largest Delta age at WD occurs during the Last Glacial Maximum, and is 525 +/- 120 years. We synchronized the WD chronology to a linearly scaled version of the layer-counted Greenland Ice Core Chronology (GICC05), which brings the age of Dansgaard-Oeschger (DO) events into agreement with the U/Th absolutely dated Hulu Cave speleothem record.
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- Type
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- Language
- en
- OA Status
- green
- Cited By
- 6
- References
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- Related Works
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- OpenAlex ID
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Raw OpenAlex JSON
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https://openalex.org/W3131423736Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1594/pangaea.902577Digital Object Identifier
- Title
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WAIS Divide Deep ice core 0-68 ka WD2014 chronologyWork title
- Type
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datasetOpenAlex work type
- Language
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enPrimary language
- Publication year
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2019Year of publication
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2019-01-01Full publication date if available
- Authors
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Michael Sigl, Christo Buizert, T. J. Fudge, Mai Winstrup, Jihong Cole‐Dai, Joseph R. McConnell, D. G. Ferris, Rachael H. Rhodes, K. C. Taylor, K. C. Welten, Thomas E. Woodruff, Florian Adolphi, Daniel Baggenstos, Edward J. Brook, Marc W. Caffee, Gary D. Clow, Hai Cheng, Kurt M. Cuffey, Nelia Dunbar, R. L. Edwards, Larry Edwards, Lei Geng, Nels Iverson, B. G. Koffman, Larry Layman, Bradley Markle, O. J. Maselli, Kenneth C. McGwire, Raimund Muscheler, K. Nishiizumi, D. R. Pasteris, Jeffrey P. Severinghaus, Todd Sowers, Eric J. SteigList of authors in order
- Open access
-
YesWhether a free full text is available
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greenOpen access status per OpenAlex
- Concepts
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Chronology, Ice core, Geology, Core (optical fiber), Physical geography, Archaeology, Climatology, Geography, Paleontology, Computer science, TelecommunicationsTop concepts (fields/topics) attached by OpenAlex
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6Total citation count in OpenAlex
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2025: 1, 2022: 5Per-year citation counts (last 5 years)
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3Number of works referenced by this work
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20Other works algorithmically related by OpenAlex
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