Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core
The North Greenland Ice Core Project (NorthGRIP) provides paleoclimatic information back to at least 115 kyr before present [Dahl-Jensen et al., 2002]. Each year, precipitation on the ice sheet covers it with a new layer of snow, which gradually transforms into ice crystals as the layer sinks into t...
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ftcern:oai:cds.cern.ch:677517 2023-05-15T16:27:15+02:00 Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core Mathiesen, J Ferkinghoff-Borg, J Jensen, M H Levinsen, M Olesen, P Dahl-Jensen, D Svensson, A 2003-10-17 https://doi.org/10.3189/172756504781829873 http://cds.cern.ch/record/677517 eng eng doi:10.3189/172756504781829873 http://cds.cern.ch/record/677517 physics/0310087 oai:cds.cern.ch:677517 Other Fields of Physics 2003 ftcern https://doi.org/10.3189/172756504781829873 2018-07-28T06:11:00Z The North Greenland Ice Core Project (NorthGRIP) provides paleoclimatic information back to at least 115 kyr before present [Dahl-Jensen et al., 2002]. Each year, precipitation on the ice sheet covers it with a new layer of snow, which gradually transforms into ice crystals as the layer sinks into the ice sheet. The size distribution of ice crystals has been measured at selected depths in the upper 880 m of the NorthGRIP ice core [Svensson et al., 2003b], which cover a time span of 5300 years. The distributions change with time toward a universal curve, indicating a common underlying physical process in the formation of crystals. We identify this process as an interplay between fragmentation of the crystals and diffusion of their grain boundaries. The process is described by a two-parameter differential equation to which we obtain the exact solution. The solution is in excellent agreement with the experimentally observed distributions. Other/Unknown Material Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet North Greenland North Greenland Ice Core Project CERN Document Server (CDS) Greenland Journal of Glaciology 50 170 325 328 |
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Open Polar |
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CERN Document Server (CDS) |
op_collection_id |
ftcern |
language |
English |
topic |
Other Fields of Physics |
spellingShingle |
Other Fields of Physics Mathiesen, J Ferkinghoff-Borg, J Jensen, M H Levinsen, M Olesen, P Dahl-Jensen, D Svensson, A Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core |
topic_facet |
Other Fields of Physics |
description |
The North Greenland Ice Core Project (NorthGRIP) provides paleoclimatic information back to at least 115 kyr before present [Dahl-Jensen et al., 2002]. Each year, precipitation on the ice sheet covers it with a new layer of snow, which gradually transforms into ice crystals as the layer sinks into the ice sheet. The size distribution of ice crystals has been measured at selected depths in the upper 880 m of the NorthGRIP ice core [Svensson et al., 2003b], which cover a time span of 5300 years. The distributions change with time toward a universal curve, indicating a common underlying physical process in the formation of crystals. We identify this process as an interplay between fragmentation of the crystals and diffusion of their grain boundaries. The process is described by a two-parameter differential equation to which we obtain the exact solution. The solution is in excellent agreement with the experimentally observed distributions. |
author |
Mathiesen, J Ferkinghoff-Borg, J Jensen, M H Levinsen, M Olesen, P Dahl-Jensen, D Svensson, A |
author_facet |
Mathiesen, J Ferkinghoff-Borg, J Jensen, M H Levinsen, M Olesen, P Dahl-Jensen, D Svensson, A |
author_sort |
Mathiesen, J |
title |
Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core |
title_short |
Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core |
title_full |
Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core |
title_fullStr |
Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core |
title_full_unstemmed |
Dynamics of Crystal Formation in the Greenland NorthGRIP Ice Core |
title_sort |
dynamics of crystal formation in the greenland northgrip ice core |
publishDate |
2003 |
url |
https://doi.org/10.3189/172756504781829873 http://cds.cern.ch/record/677517 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet North Greenland North Greenland Ice Core Project |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet North Greenland North Greenland Ice Core Project |
op_relation |
doi:10.3189/172756504781829873 http://cds.cern.ch/record/677517 physics/0310087 oai:cds.cern.ch:677517 |
op_doi |
https://doi.org/10.3189/172756504781829873 |
container_title |
Journal of Glaciology |
container_volume |
50 |
container_issue |
170 |
container_start_page |
325 |
op_container_end_page |
328 |
_version_ |
1766016367300968448 |