Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores
THE direct-current electrical conductivity of glacial ice depends on its acidity1–3, and can also indicate changes in climate, as ice formed in cold, dusty periods has a high concentration of alkaline dust1,4,5, which significantly reduces the conductivity6,7 compared to warmer, less dusty periods....
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1993
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ftnerc:oai:nora.nerc.ac.uk:518085 2023-05-15T16:26:02+02:00 Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores Taylor, K. C. Hammer, C. U. Alley, R. B. Clausen, H. B. Dahl-Jensen, D. Gow, A. J. Gundestrup, N. S. Kipfstuh, J. Moore, J. C. Waddington, E. D. 1993-12 http://nora.nerc.ac.uk/id/eprint/518085/ https://doi.org/10.1038/366549a0 unknown Nature Publishing Group Taylor, K. C.; Hammer, C. U.; Alley, R. B.; Clausen, H. B.; Dahl-Jensen, D.; Gow, A. J.; Gundestrup, N. S.; Kipfstuh, J.; Moore, J. C.; Waddington, E. D. 1993 Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores. Nature, 366 (6455). 549-552. https://doi.org/10.1038/366549a0 <https://doi.org/10.1038/366549a0> Publication - Article PeerReviewed 1993 ftnerc https://doi.org/10.1038/366549a0 2023-02-04T19:45:31Z THE direct-current electrical conductivity of glacial ice depends on its acidity1–3, and can also indicate changes in climate, as ice formed in cold, dusty periods has a high concentration of alkaline dust1,4,5, which significantly reduces the conductivity6,7 compared to warmer, less dusty periods. Here we present electrical conductivity records for the Greenland Ice Sheet Project 2 (GISP2) and Greenland Ice-core Project (GRIP) ice cores, drilled 28 km apart to enable direct comparison of the results. The upper parts of both records are consistent with previous evidence from other Greenland cores4,8& #150;12 for a stable Greenland climate during the Holocene, and a series of warm events punctuating the last glacial period. However, there is a significant discrepancy between the two records in the bottom 10% of the cores, calling into question recent reports of climate variability in the last interglacial4,8 and the penultimate glaciation8. At this stage, it is too early to say what exactly is causing the discrepancy, although ice flow may have introduced some discontinuities into the records. Further work will be necessary to establish how much climatic information it will eventually be possible to extract from the lower parts of the two cores. Article in Journal/Newspaper Greenland Greenland ice core Greenland Ice core Project Greenland Ice Sheet Project GRIP ice core Ice Sheet Natural Environment Research Council: NERC Open Research Archive Greenland Nature 366 6455 549 552 |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
THE direct-current electrical conductivity of glacial ice depends on its acidity1–3, and can also indicate changes in climate, as ice formed in cold, dusty periods has a high concentration of alkaline dust1,4,5, which significantly reduces the conductivity6,7 compared to warmer, less dusty periods. Here we present electrical conductivity records for the Greenland Ice Sheet Project 2 (GISP2) and Greenland Ice-core Project (GRIP) ice cores, drilled 28 km apart to enable direct comparison of the results. The upper parts of both records are consistent with previous evidence from other Greenland cores4,8& #150;12 for a stable Greenland climate during the Holocene, and a series of warm events punctuating the last glacial period. However, there is a significant discrepancy between the two records in the bottom 10% of the cores, calling into question recent reports of climate variability in the last interglacial4,8 and the penultimate glaciation8. At this stage, it is too early to say what exactly is causing the discrepancy, although ice flow may have introduced some discontinuities into the records. Further work will be necessary to establish how much climatic information it will eventually be possible to extract from the lower parts of the two cores. |
format |
Article in Journal/Newspaper |
author |
Taylor, K. C. Hammer, C. U. Alley, R. B. Clausen, H. B. Dahl-Jensen, D. Gow, A. J. Gundestrup, N. S. Kipfstuh, J. Moore, J. C. Waddington, E. D. |
spellingShingle |
Taylor, K. C. Hammer, C. U. Alley, R. B. Clausen, H. B. Dahl-Jensen, D. Gow, A. J. Gundestrup, N. S. Kipfstuh, J. Moore, J. C. Waddington, E. D. Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores |
author_facet |
Taylor, K. C. Hammer, C. U. Alley, R. B. Clausen, H. B. Dahl-Jensen, D. Gow, A. J. Gundestrup, N. S. Kipfstuh, J. Moore, J. C. Waddington, E. D. |
author_sort |
Taylor, K. C. |
title |
Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores |
title_short |
Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores |
title_full |
Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores |
title_fullStr |
Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores |
title_full_unstemmed |
Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores |
title_sort |
electrical conductivity measurements from the gisp2 and grip greenlandice cores |
publisher |
Nature Publishing Group |
publishDate |
1993 |
url |
http://nora.nerc.ac.uk/id/eprint/518085/ https://doi.org/10.1038/366549a0 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project Greenland Ice Sheet Project GRIP ice core Ice Sheet |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project Greenland Ice Sheet Project GRIP ice core Ice Sheet |
op_relation |
Taylor, K. C.; Hammer, C. U.; Alley, R. B.; Clausen, H. B.; Dahl-Jensen, D.; Gow, A. J.; Gundestrup, N. S.; Kipfstuh, J.; Moore, J. C.; Waddington, E. D. 1993 Electrical conductivity measurements from the GISP2 and GRIP Greenlandice cores. Nature, 366 (6455). 549-552. https://doi.org/10.1038/366549a0 <https://doi.org/10.1038/366549a0> |
op_doi |
https://doi.org/10.1038/366549a0 |
container_title |
Nature |
container_volume |
366 |
container_issue |
6455 |
container_start_page |
549 |
op_container_end_page |
552 |
_version_ |
1766014893076512768 |