The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP)
We present the WD2014 chronology for the upper part (0–2850m; 31.2kaBP) of the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core. The chronology is based on counting of annual layers observed in the chemical, dust and electrical conductivity records. These layers are caused by seasonal changes in...
Published in: | Climate of the Past |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/37625/ https://doi.org/10.5194/cp-12-769-2016 https://nrl.northumbria.ac.uk/id/eprint/37625/1/The%20WAIS%20Divide%20deep%20ice%20core%20WD2014%20chronology%20-%20Part%202.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:37625 2023-05-15T13:56:54+02:00 The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) Sigl, Michael Fudge, Tyler J. Winstrup, Mai Cole-Dai, Jihong Ferris, David McConnell, Joseph R. Taylor, Ken C. Welten, Kees C. Woodruff, Thomas E. Adolphi, Florian Bisiaux, Marion Brook, Edward J. Buizert, Christo Caffee, Marc W. Dunbar, Nelia W. Edwards, Ross Geng, Lei Iverson, Nels Koffman, Bess Layman, Lawrence Maselli, Olivia J. McGwire, Kenneth Muscheler, Raimund Nishiizumi, Kunihiko Pasteris, Daniel R. Rhodes, Rachael H. Sowers, Todd A. 2016-03-30 text https://nrl.northumbria.ac.uk/id/eprint/37625/ https://doi.org/10.5194/cp-12-769-2016 https://nrl.northumbria.ac.uk/id/eprint/37625/1/The%20WAIS%20Divide%20deep%20ice%20core%20WD2014%20chronology%20-%20Part%202.pdf en eng Copernicus https://nrl.northumbria.ac.uk/id/eprint/37625/1/The%20WAIS%20Divide%20deep%20ice%20core%20WD2014%20chronology%20-%20Part%202.pdf Sigl, Michael, Fudge, Tyler J., Winstrup, Mai, Cole-Dai, Jihong, Ferris, David, McConnell, Joseph R., Taylor, Ken C., Welten, Kees C., Woodruff, Thomas E., Adolphi, Florian, Bisiaux, Marion, Brook, Edward J., Buizert, Christo, Caffee, Marc W., Dunbar, Nelia W., Edwards, Ross, Geng, Lei, Iverson, Nels, Koffman, Bess, Layman, Lawrence, Maselli, Olivia J., McGwire, Kenneth, Muscheler, Raimund, Nishiizumi, Kunihiko, Pasteris, Daniel R., Rhodes, Rachael H. and Sowers, Todd A. (2016) The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP). Climate of the Past, 12 (3). pp. 769-786. ISSN 1814-9332 cc_by CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2016 ftunivnorthumb https://doi.org/10.5194/cp-12-769-2016 2022-09-25T06:08:59Z We present the WD2014 chronology for the upper part (0–2850m; 31.2kaBP) of the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core. The chronology is based on counting of annual layers observed in the chemical, dust and electrical conductivity records. These layers are caused by seasonal changes in the source, transport, and deposition of aerosols. The measurements were interpreted manually and with the aid of two automated methods. We validated the chronology by comparing to two high-accuracy, absolutely dated chronologies. For the Holocene, the cosmogenic isotope records of 10Be from WAIS Divide and 14C for IntCal13 demonstrated that WD2014 was consistently accurate to better than 0.5% of the age. For the glacial period, comparisons to the Hulu Cave chronology demonstrated that WD2014 had an accuracy of better than 1% of the age at three abrupt climate change events between 27 and 31ka. WD2014 has consistently younger ages than Greenland ice core chronologies during most of the Holocene. For the Younger Dryas–Preboreal transition (11.595ka; 24 years younger) and the Bølling–Allerød Warming (14.621ka; 7 years younger), WD2014 ages are within the combined uncertainties of the timescales. Given its high accuracy, WD2014 can become a reference chronology for the Southern Hemisphere, with synchronization to other chronologies feasible using high-quality proxies of volcanism, solar activity, atmospheric mineral dust, and atmospheric methane concentrations. Article in Journal/Newspaper Antarc* Antarctic Greenland Greenland ice core ice core Ice Sheet Northumbria University, Newcastle: Northumbria Research Link (NRL) Antarctic Greenland Hulu ENVELOPE(8.610,8.610,62.837,62.837) West Antarctic Ice Sheet Climate of the Past 12 3 769 786 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Sigl, Michael Fudge, Tyler J. Winstrup, Mai Cole-Dai, Jihong Ferris, David McConnell, Joseph R. Taylor, Ken C. Welten, Kees C. Woodruff, Thomas E. Adolphi, Florian Bisiaux, Marion Brook, Edward J. Buizert, Christo Caffee, Marc W. Dunbar, Nelia W. Edwards, Ross Geng, Lei Iverson, Nels Koffman, Bess Layman, Lawrence Maselli, Olivia J. McGwire, Kenneth Muscheler, Raimund Nishiizumi, Kunihiko Pasteris, Daniel R. Rhodes, Rachael H. Sowers, Todd A. The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
We present the WD2014 chronology for the upper part (0–2850m; 31.2kaBP) of the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core. The chronology is based on counting of annual layers observed in the chemical, dust and electrical conductivity records. These layers are caused by seasonal changes in the source, transport, and deposition of aerosols. The measurements were interpreted manually and with the aid of two automated methods. We validated the chronology by comparing to two high-accuracy, absolutely dated chronologies. For the Holocene, the cosmogenic isotope records of 10Be from WAIS Divide and 14C for IntCal13 demonstrated that WD2014 was consistently accurate to better than 0.5% of the age. For the glacial period, comparisons to the Hulu Cave chronology demonstrated that WD2014 had an accuracy of better than 1% of the age at three abrupt climate change events between 27 and 31ka. WD2014 has consistently younger ages than Greenland ice core chronologies during most of the Holocene. For the Younger Dryas–Preboreal transition (11.595ka; 24 years younger) and the Bølling–Allerød Warming (14.621ka; 7 years younger), WD2014 ages are within the combined uncertainties of the timescales. Given its high accuracy, WD2014 can become a reference chronology for the Southern Hemisphere, with synchronization to other chronologies feasible using high-quality proxies of volcanism, solar activity, atmospheric mineral dust, and atmospheric methane concentrations. |
format |
Article in Journal/Newspaper |
author |
Sigl, Michael Fudge, Tyler J. Winstrup, Mai Cole-Dai, Jihong Ferris, David McConnell, Joseph R. Taylor, Ken C. Welten, Kees C. Woodruff, Thomas E. Adolphi, Florian Bisiaux, Marion Brook, Edward J. Buizert, Christo Caffee, Marc W. Dunbar, Nelia W. Edwards, Ross Geng, Lei Iverson, Nels Koffman, Bess Layman, Lawrence Maselli, Olivia J. McGwire, Kenneth Muscheler, Raimund Nishiizumi, Kunihiko Pasteris, Daniel R. Rhodes, Rachael H. Sowers, Todd A. |
author_facet |
Sigl, Michael Fudge, Tyler J. Winstrup, Mai Cole-Dai, Jihong Ferris, David McConnell, Joseph R. Taylor, Ken C. Welten, Kees C. Woodruff, Thomas E. Adolphi, Florian Bisiaux, Marion Brook, Edward J. Buizert, Christo Caffee, Marc W. Dunbar, Nelia W. Edwards, Ross Geng, Lei Iverson, Nels Koffman, Bess Layman, Lawrence Maselli, Olivia J. McGwire, Kenneth Muscheler, Raimund Nishiizumi, Kunihiko Pasteris, Daniel R. Rhodes, Rachael H. Sowers, Todd A. |
author_sort |
Sigl, Michael |
title |
The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) |
title_short |
The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) |
title_full |
The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) |
title_fullStr |
The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) |
title_full_unstemmed |
The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) |
title_sort |
wais divide deep ice core wd2014 chronology – part 2: annual-layer counting (0–31 ka bp) |
publisher |
Copernicus |
publishDate |
2016 |
url |
https://nrl.northumbria.ac.uk/id/eprint/37625/ https://doi.org/10.5194/cp-12-769-2016 https://nrl.northumbria.ac.uk/id/eprint/37625/1/The%20WAIS%20Divide%20deep%20ice%20core%20WD2014%20chronology%20-%20Part%202.pdf |
long_lat |
ENVELOPE(8.610,8.610,62.837,62.837) |
geographic |
Antarctic Greenland Hulu West Antarctic Ice Sheet |
geographic_facet |
Antarctic Greenland Hulu West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Greenland Greenland ice core ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Greenland Greenland ice core ice core Ice Sheet |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/37625/1/The%20WAIS%20Divide%20deep%20ice%20core%20WD2014%20chronology%20-%20Part%202.pdf Sigl, Michael, Fudge, Tyler J., Winstrup, Mai, Cole-Dai, Jihong, Ferris, David, McConnell, Joseph R., Taylor, Ken C., Welten, Kees C., Woodruff, Thomas E., Adolphi, Florian, Bisiaux, Marion, Brook, Edward J., Buizert, Christo, Caffee, Marc W., Dunbar, Nelia W., Edwards, Ross, Geng, Lei, Iverson, Nels, Koffman, Bess, Layman, Lawrence, Maselli, Olivia J., McGwire, Kenneth, Muscheler, Raimund, Nishiizumi, Kunihiko, Pasteris, Daniel R., Rhodes, Rachael H. and Sowers, Todd A. (2016) The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP). Climate of the Past, 12 (3). pp. 769-786. ISSN 1814-9332 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-12-769-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
3 |
container_start_page |
769 |
op_container_end_page |
786 |
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1766264503105748992 |