noaa-icecore-10588
Antarctic and Greenland Synchronised Deglacial Ice Core Time Scales
Lemieux-Dudon, B.; Blayo, E.; Petit, J.-R.; Waelbroeck, C.; Svensson, A.M.; Ritz, C.; Barnola, J.M.; Narcisi, B.; Parrenin, F.
Antarctic and Greenland Synchronised Deglacial Ice Core Time Scales
2011-03-21
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10588
Investigator
B.
Lemieux-Dudon
Investigator
E.
Blayo
Investigator
J.-R.
Petit
Investigator
C.
Waelbroeck
Investigator
A.M.
Svensson
Investigator
C.
Ritz
Investigator
J.M.
Barnola
Investigator
B.
Narcisi
Investigator
F.
Parrenin
earth science
paleoclimate
ice cores
ice age,null,unspecified margin of error,calendar year before present,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
ice age,null,null,calendar year before present,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
depth,null,null,meter,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
gas age,null,null,calendar year before present,null,ice cores,null,null,N,null
earth science
paleoclimate
ice core
age control
geoscientificInformation
59343 cal yr BP
-55 cal yr BP
Complete
-78.47
75.1
-42.33
123.4
2892
3240
Continent
Antarctica
EPICA Dome C>LATITUDE -75.1>LONGITUDE 123.4
Continent
Antarctica
Vostok>LATITUDE -78.47>LONGITUDE 106.8
Continent
Antarctica
EPICA Dronning Maud Land>LATITUDE -75>LONGITUDE .07
Continent
North America
Greenland
NGRIP>LATITUDE 75.1>LONGITUDE -42.33
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
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, Vol. 29, Issues 1-2, pp. 8-20, Jan. 2010.
doi:10.1016/j.quascirev.2009.11.010.
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.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/lemieux-dudon2010timescales.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/lemieux-dudon2010timescales.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11