Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ...
Continuous measurements of ice crystal size have been carried out on an 80 m sequence between 2790 and 2870 m depth in the GRIP ice core from Central Greenland. The ice in this interval is at present considered to orginate from the Eemian interglacial period. The record reveals that the crystal size...
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1995
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ftdatacite:10.48350/158535 2024-09-30T14:35:48+00:00 Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... Thorsteinsson, Thorsteinn Kipfstuhl, Josef Eicken, Hajo Johnsen, Sigfus J. Fuhrer, Katrin 1995 https://dx.doi.org/10.48350/158535 https://boris.unibe.ch/158535/ unknown Elsevier restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec 530 Physics Text ScholarlyArticle article-journal journal article 1995 ftdatacite https://doi.org/10.48350/158535 2024-09-02T10:17:31Z Continuous measurements of ice crystal size have been carried out on an 80 m sequence between 2790 and 2870 m depth in the GRIP ice core from Central Greenland. The ice in this interval is at present considered to orginate from the Eemian interglacial period. The record reveals that the crystal size in ice older than 100,000 yr is highly dependent on climatic conditions at the time of snowfall. This dependence shows up as a strong correlation between δ18O values and crystal size throughout the Eemian, as well as a negative correlation between crystal size and several soluble and insoluble impurities. Although high-resolution impurity records are available from selected parts of the Eemian ice, the study is not conclusive on which impurities are most effective in slowing grain growth. It is shown that the normal grain-growth process, commonly observed in the upper few hundred metres of polar ice sheets, does not yield grain sizes compatible with observed ones at this depth in the ice sheet, even in those ... Text Greenland GRIP ice core Ice Sheet DataCite Greenland |
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530 Physics |
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530 Physics Thorsteinsson, Thorsteinn Kipfstuhl, Josef Eicken, Hajo Johnsen, Sigfus J. Fuhrer, Katrin Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... |
topic_facet |
530 Physics |
description |
Continuous measurements of ice crystal size have been carried out on an 80 m sequence between 2790 and 2870 m depth in the GRIP ice core from Central Greenland. The ice in this interval is at present considered to orginate from the Eemian interglacial period. The record reveals that the crystal size in ice older than 100,000 yr is highly dependent on climatic conditions at the time of snowfall. This dependence shows up as a strong correlation between δ18O values and crystal size throughout the Eemian, as well as a negative correlation between crystal size and several soluble and insoluble impurities. Although high-resolution impurity records are available from selected parts of the Eemian ice, the study is not conclusive on which impurities are most effective in slowing grain growth. It is shown that the normal grain-growth process, commonly observed in the upper few hundred metres of polar ice sheets, does not yield grain sizes compatible with observed ones at this depth in the ice sheet, even in those ... |
format |
Text |
author |
Thorsteinsson, Thorsteinn Kipfstuhl, Josef Eicken, Hajo Johnsen, Sigfus J. Fuhrer, Katrin |
author_facet |
Thorsteinsson, Thorsteinn Kipfstuhl, Josef Eicken, Hajo Johnsen, Sigfus J. Fuhrer, Katrin |
author_sort |
Thorsteinsson, Thorsteinn |
title |
Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... |
title_short |
Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... |
title_full |
Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... |
title_fullStr |
Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... |
title_full_unstemmed |
Crystal size variations in Eemian-age ice from the GRIP ice core, Central Greenland ... |
title_sort |
crystal size variations in eemian-age ice from the grip ice core, central greenland ... |
publisher |
Elsevier |
publishDate |
1995 |
url |
https://dx.doi.org/10.48350/158535 https://boris.unibe.ch/158535/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland GRIP ice core Ice Sheet |
genre_facet |
Greenland GRIP ice core Ice Sheet |
op_rights |
restricted access publisher holds copyright http://purl.org/coar/access_right/c_16ec |
op_doi |
https://doi.org/10.48350/158535 |
_version_ |
1811639040656539648 |