The South Pole Ice Core (SPICEcore) chronology and supporting data
The South Pole Ice Core (SPICEcore) was drilled in 2014-2016 to provide a detailed multi-proxy archive of paleoclimate conditions in East Antarctica during the Holocene and late Pleistocene. Interpretation of these records requires an accurate depth-age relationship. Here, we present the SP19 timesc...
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U.S. Antarctic Program (USAP) Data Center
2019
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Online Access: | https://dx.doi.org/10.15784/601206 http://www.usap-dc.org/view/dataset/601206 |
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ftdatacite:10.15784/601206 2023-05-15T13:30:27+02:00 The South Pole Ice Core (SPICEcore) chronology and supporting data Alley, Richard Aydin, Murat Bay, Ryan Beaudette, Ross Brook, Edward J Buizert, Christo Casey, Kimberly A. Cole-Dai, Jihong Cox, Thomas S. Dunbar, Nelia Epifanio, Jenna Fegyveresi, John M. Ferris, David G. Fudge, T. J. Iverson, Nels A. Jones, Tyler Kahle, Emma Kreutz, Karl Mcconnell, Joseph Morris, Valerie Nicewonger, Melinda R. Ortman, Nikolas Osterberg, Erich C. Severinghaus, Jeffrey Sigl, Michael Souney, Joseph Sowers, Todd A. Steig, Eric J. Thundercloud, Zayta Waddington, Edwin D. Winski, Dominic Winski, Dominic A. 2019 https://dx.doi.org/10.15784/601206 http://www.usap-dc.org/view/dataset/601206 en eng U.S. Antarctic Program (USAP) Data Center Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0] https://creativecommons.org/licenses/by-nc-sa/3.0/us CC-BY-NC-SA Calcium CA Nitrate Ice Core Chemistry Ice Core Data Ice Core Stratigraphy Nitrogen Isotopes Glaciochemistry Ice Depth SPICEcore Ice Core ChemistryIce Glaciology Ice Core Records Paleoclimate Antarctica Glaciers/Ice Sheet Snow/Ice Cryosphere dataset Dataset 2019 ftdatacite https://doi.org/10.15784/601206 2021-11-05T12:55:41Z The South Pole Ice Core (SPICEcore) was drilled in 2014-2016 to provide a detailed multi-proxy archive of paleoclimate conditions in East Antarctica during the Holocene and late Pleistocene. Interpretation of these records requires an accurate depth-age relationship. Here, we present the SP19 timescale for the age of the ice of SPICEcore. SP19 is synchronized to the WD2014 chronology from the West Antarctic Ice Sheet Divide (WAIS Divide) ice core using stratigraphic matching of 251 volcanic events. These events indicate an age of 54,302 +/- 519 years BP (before the year 1950) at the bottom of SPICEcore. Annual layers identified in sodium and magnesium ions to 11,341 BP were used to interpolate between stratigraphic volcanic tie points, yielding an annually-resolved chronology through the Holocene. Estimated timescale uncertainty during the Holocene is less than 18 years relative to WD2014, with the exception of the interval between 1800 to 3100 BP when uncertainty estimates reach +/- 25 years due to widely spaced volcanic tie points. Prior to the Holocene, uncertainties remain within 124 years relative to WD2014. Results show an average Holocene accumulation rate of 7.4 cm/yr (water equivalent). The time variability of accumulation rate is consistent with expectations for steady-state ice flow through the modern spatial pattern of accumulation rate. Time variations in nitrate concentration, nitrate seasonal amplitude, and δ15N of N2 in turn are as expected for the accumulation-rate variations. The highly variable yet well-constrained Holocene accumulation history at the site can help improve scientific understanding of deposition-sensitive climate proxies such as δ15N of N2 and photolyzed chemical compounds. Dataset Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South pole South pole DataCite Metadata Store (German National Library of Science and Technology) Antarctic East Antarctica West Antarctic Ice Sheet South Pole |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Calcium CA Nitrate Ice Core Chemistry Ice Core Data Ice Core Stratigraphy Nitrogen Isotopes Glaciochemistry Ice Depth SPICEcore Ice Core ChemistryIce Glaciology Ice Core Records Paleoclimate Antarctica Glaciers/Ice Sheet Snow/Ice Cryosphere |
spellingShingle |
Calcium CA Nitrate Ice Core Chemistry Ice Core Data Ice Core Stratigraphy Nitrogen Isotopes Glaciochemistry Ice Depth SPICEcore Ice Core ChemistryIce Glaciology Ice Core Records Paleoclimate Antarctica Glaciers/Ice Sheet Snow/Ice Cryosphere Alley, Richard Aydin, Murat Bay, Ryan Beaudette, Ross Brook, Edward J Buizert, Christo Casey, Kimberly A. Cole-Dai, Jihong Cox, Thomas S. Dunbar, Nelia Epifanio, Jenna Fegyveresi, John M. Ferris, David G. Fudge, T. J. Iverson, Nels A. Jones, Tyler Kahle, Emma Kreutz, Karl Mcconnell, Joseph Morris, Valerie Nicewonger, Melinda R. Ortman, Nikolas Osterberg, Erich C. Severinghaus, Jeffrey Sigl, Michael Souney, Joseph Sowers, Todd A. Steig, Eric J. Thundercloud, Zayta Waddington, Edwin D. Winski, Dominic Winski, Dominic A. The South Pole Ice Core (SPICEcore) chronology and supporting data |
topic_facet |
Calcium CA Nitrate Ice Core Chemistry Ice Core Data Ice Core Stratigraphy Nitrogen Isotopes Glaciochemistry Ice Depth SPICEcore Ice Core ChemistryIce Glaciology Ice Core Records Paleoclimate Antarctica Glaciers/Ice Sheet Snow/Ice Cryosphere |
description |
The South Pole Ice Core (SPICEcore) was drilled in 2014-2016 to provide a detailed multi-proxy archive of paleoclimate conditions in East Antarctica during the Holocene and late Pleistocene. Interpretation of these records requires an accurate depth-age relationship. Here, we present the SP19 timescale for the age of the ice of SPICEcore. SP19 is synchronized to the WD2014 chronology from the West Antarctic Ice Sheet Divide (WAIS Divide) ice core using stratigraphic matching of 251 volcanic events. These events indicate an age of 54,302 +/- 519 years BP (before the year 1950) at the bottom of SPICEcore. Annual layers identified in sodium and magnesium ions to 11,341 BP were used to interpolate between stratigraphic volcanic tie points, yielding an annually-resolved chronology through the Holocene. Estimated timescale uncertainty during the Holocene is less than 18 years relative to WD2014, with the exception of the interval between 1800 to 3100 BP when uncertainty estimates reach +/- 25 years due to widely spaced volcanic tie points. Prior to the Holocene, uncertainties remain within 124 years relative to WD2014. Results show an average Holocene accumulation rate of 7.4 cm/yr (water equivalent). The time variability of accumulation rate is consistent with expectations for steady-state ice flow through the modern spatial pattern of accumulation rate. Time variations in nitrate concentration, nitrate seasonal amplitude, and δ15N of N2 in turn are as expected for the accumulation-rate variations. The highly variable yet well-constrained Holocene accumulation history at the site can help improve scientific understanding of deposition-sensitive climate proxies such as δ15N of N2 and photolyzed chemical compounds. |
format |
Dataset |
author |
Alley, Richard Aydin, Murat Bay, Ryan Beaudette, Ross Brook, Edward J Buizert, Christo Casey, Kimberly A. Cole-Dai, Jihong Cox, Thomas S. Dunbar, Nelia Epifanio, Jenna Fegyveresi, John M. Ferris, David G. Fudge, T. J. Iverson, Nels A. Jones, Tyler Kahle, Emma Kreutz, Karl Mcconnell, Joseph Morris, Valerie Nicewonger, Melinda R. Ortman, Nikolas Osterberg, Erich C. Severinghaus, Jeffrey Sigl, Michael Souney, Joseph Sowers, Todd A. Steig, Eric J. Thundercloud, Zayta Waddington, Edwin D. Winski, Dominic Winski, Dominic A. |
author_facet |
Alley, Richard Aydin, Murat Bay, Ryan Beaudette, Ross Brook, Edward J Buizert, Christo Casey, Kimberly A. Cole-Dai, Jihong Cox, Thomas S. Dunbar, Nelia Epifanio, Jenna Fegyveresi, John M. Ferris, David G. Fudge, T. J. Iverson, Nels A. Jones, Tyler Kahle, Emma Kreutz, Karl Mcconnell, Joseph Morris, Valerie Nicewonger, Melinda R. Ortman, Nikolas Osterberg, Erich C. Severinghaus, Jeffrey Sigl, Michael Souney, Joseph Sowers, Todd A. Steig, Eric J. Thundercloud, Zayta Waddington, Edwin D. Winski, Dominic Winski, Dominic A. |
author_sort |
Alley, Richard |
title |
The South Pole Ice Core (SPICEcore) chronology and supporting data |
title_short |
The South Pole Ice Core (SPICEcore) chronology and supporting data |
title_full |
The South Pole Ice Core (SPICEcore) chronology and supporting data |
title_fullStr |
The South Pole Ice Core (SPICEcore) chronology and supporting data |
title_full_unstemmed |
The South Pole Ice Core (SPICEcore) chronology and supporting data |
title_sort |
south pole ice core (spicecore) chronology and supporting data |
publisher |
U.S. Antarctic Program (USAP) Data Center |
publishDate |
2019 |
url |
https://dx.doi.org/10.15784/601206 http://www.usap-dc.org/view/dataset/601206 |
geographic |
Antarctic East Antarctica West Antarctic Ice Sheet South Pole |
geographic_facet |
Antarctic East Antarctica West Antarctic Ice Sheet South Pole |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South pole South pole |
op_rights |
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0] https://creativecommons.org/licenses/by-nc-sa/3.0/us |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.15784/601206 |
_version_ |
1766008652906364928 |