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Antarctic and Greenland Synchronised Deglacial Ice Core Time Scales
Originator:
Lemieux-Dudon, B.; Blayo, E.; Petit, J.-R.; Waelbroeck, C.; Svensson, A.M.; Ritz, C.; Barnola, J.-M.; Narcisi, B.; Parrenin, F.Citation Information:
Lemieux-Dudon, B., E. Blayo, J.-R. Petit, C. Waelbroeck, A. Svensson, C. Ritz, J.-M. Barnola, B.M. Narcisi, and F. Parrenin. 2010. Consistent dating for Antarctic and Greenland ice cores. Quaternary Science Reviews, 29(1-2), 8-20. doi: 10.1016/j.quascirev.2009.11.010
NOAA Study Page:
https://www.ncei.noaa.gov/access/paleo-search/study/10588Lat:0, Lon:0
Download Data:
Data Files for All Sites | |
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Data | lemieux-dudon2010timescales.txt |
Data | lemieux-dudon2010timescales.xls |
Use Constraints:
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.Distributor:
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of CommerceResource Description (data set id):
noaa-icecore-10588Data Coverage:
Southernmost Latitude: -78.47
Northernmost Latitude: 75.1
Westernmost Longitude: -42.33
Easternmost Longitude: 123.4
Minimum Elevation: 2892 m
Maximum Elevation: 3488 m
Earliest Year: 59343 cal yr BP (-57393 CE)
Most Recent Year: -55 cal yr BP (2005 CE)
Northernmost Latitude: 75.1
Westernmost Longitude: -42.33
Easternmost Longitude: 123.4
Minimum Elevation: 2892 m
Maximum Elevation: 3488 m
Earliest Year: 59343 cal yr BP (-57393 CE)
Most Recent Year: -55 cal yr BP (2005 CE)
Parameters:
earth science>paleoclimate>ice core>age control
Summary/Abstract:
We are hereby presenting a new dating method based on inverse techniques, which aims at calculating consistent gas and ice chronologies for several ice cores. The proposed method yields new dating scenarios simultaneously for several cores by making a compromise between the chronological information brought by glaciological modeling (i.e., ice flow model, firn densification model, accumulation rate model), and by gas and ice stratigraphic constraints. This method enables us to gather widespread chronological information and to use regional or global markers (i.e., methane, volcanic sulfate, Beryllium-10, tephra layers, etc.) to link the core chronologies stratigraphically. Confidence intervals of the new dating scenarios can be calculated thanks to the probabilistic formulation of the new method, which takes into account both modeling and data uncertainties. We apply this method simultaneously to one Greenland (NGRIP) and three Antarctic (EPICA Dome C, EPICA Dronning Maud Land, and Vostok) ice cores, and refine existent chronologies. Our results show that consistent ice and gas chronologies can be derived for depth intervals that are well-constrained by relevant glaciological data. In particular, we propose new and consistent dating of the last deglaciation for Greenland and Antarctic ice and gas records.
Study Notes:
New synchronised time scales for one Greenland (NGRIP) and 3 Antarctic (EPICA Dome C, EPICA Dronning Maud Land, and Vostok) ice cores.More Information:
Contact Information:
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
325 Broadway, E/NE31
Boulder, CO 80305-3328
USA
email: paleo@noaa.gov
phone: 828-271-4800 fax: 303-497-6513