Snow isotope diffusion rates measured in a laboratory experiment
The diffusion of stable water isotopes in snow was measured in two controlled laboratory experiments. Two batches of snow of different isotopic composition were stacked alternately with varying layer thicknesses. The stack was stored in a freezer room at constant temperature for several months, and...
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Online Access: | https://hdl.handle.net/11370/19894da2-72c4-4ae8-b70a-88b0bb604492 https://research.rug.nl/en/publications/19894da2-72c4-4ae8-b70a-88b0bb604492 https://doi.org/10.3189/002214311795306727 |
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ftunigroningenpu:oai:pure.rug.nl:publications/19894da2-72c4-4ae8-b70a-88b0bb604492 2024-06-02T08:07:32+00:00 Snow isotope diffusion rates measured in a laboratory experiment Van der Wel, L. G. Gkinis, V. Pohjola, V. A. Meijer, H. A. J. 2011 https://hdl.handle.net/11370/19894da2-72c4-4ae8-b70a-88b0bb604492 https://research.rug.nl/en/publications/19894da2-72c4-4ae8-b70a-88b0bb604492 https://doi.org/10.3189/002214311795306727 eng eng https://research.rug.nl/en/publications/19894da2-72c4-4ae8-b70a-88b0bb604492 info:eu-repo/semantics/closedAccess Van der Wel , L G , Gkinis , V , Pohjola , V A & Meijer , H A J 2011 , ' Snow isotope diffusion rates measured in a laboratory experiment ' , Journal of Glaciology , vol. 57 , no. 201 , pp. 30-38 . https://doi.org/10.3189/002214311795306727 CENTRAL GREENLAND STABLE-ISOTOPES ICE CORES WATER FIRN SUBLIMATION EXCHANGE VAPOR article 2011 ftunigroningenpu https://doi.org/10.3189/002214311795306727 2024-05-07T18:47:21Z The diffusion of stable water isotopes in snow was measured in two controlled laboratory experiments. Two batches of snow of different isotopic composition were stacked alternately with varying layer thicknesses. The stack was stored in a freezer room at constant temperature for several months, and sampled at regular intervals to analyse the diffusion. Measured isotope profiles were fitted to a theoretical model with diffusion length as the fit parameter. In the first experiment, we observed a difference in diffusion rates between layers of different thicknesses, which is likely caused by layers of snow not being in proper contact with each other. In the second experiment we found very good agreement between measurements and model results. The measured diffusivity is compared with theory, in which we mainly focus on the temperature dependence of the ice-vapour fractionation factors. This temperature dependence is slightly different for the different isotopes of water, which leads to a difference in diffusion rates. We illustrate how our set-up can be used to measure the ratio between ice-vapour fractionation factors of oxygen-18 and deuterium, which determine the relation between the difference in diffusion and the firn temperature. Article in Journal/Newspaper Greenland Journal of Glaciology University of Groningen research database Greenland Journal of Glaciology 57 201 30 38 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
CENTRAL GREENLAND STABLE-ISOTOPES ICE CORES WATER FIRN SUBLIMATION EXCHANGE VAPOR |
spellingShingle |
CENTRAL GREENLAND STABLE-ISOTOPES ICE CORES WATER FIRN SUBLIMATION EXCHANGE VAPOR Van der Wel, L. G. Gkinis, V. Pohjola, V. A. Meijer, H. A. J. Snow isotope diffusion rates measured in a laboratory experiment |
topic_facet |
CENTRAL GREENLAND STABLE-ISOTOPES ICE CORES WATER FIRN SUBLIMATION EXCHANGE VAPOR |
description |
The diffusion of stable water isotopes in snow was measured in two controlled laboratory experiments. Two batches of snow of different isotopic composition were stacked alternately with varying layer thicknesses. The stack was stored in a freezer room at constant temperature for several months, and sampled at regular intervals to analyse the diffusion. Measured isotope profiles were fitted to a theoretical model with diffusion length as the fit parameter. In the first experiment, we observed a difference in diffusion rates between layers of different thicknesses, which is likely caused by layers of snow not being in proper contact with each other. In the second experiment we found very good agreement between measurements and model results. The measured diffusivity is compared with theory, in which we mainly focus on the temperature dependence of the ice-vapour fractionation factors. This temperature dependence is slightly different for the different isotopes of water, which leads to a difference in diffusion rates. We illustrate how our set-up can be used to measure the ratio between ice-vapour fractionation factors of oxygen-18 and deuterium, which determine the relation between the difference in diffusion and the firn temperature. |
format |
Article in Journal/Newspaper |
author |
Van der Wel, L. G. Gkinis, V. Pohjola, V. A. Meijer, H. A. J. |
author_facet |
Van der Wel, L. G. Gkinis, V. Pohjola, V. A. Meijer, H. A. J. |
author_sort |
Van der Wel, L. G. |
title |
Snow isotope diffusion rates measured in a laboratory experiment |
title_short |
Snow isotope diffusion rates measured in a laboratory experiment |
title_full |
Snow isotope diffusion rates measured in a laboratory experiment |
title_fullStr |
Snow isotope diffusion rates measured in a laboratory experiment |
title_full_unstemmed |
Snow isotope diffusion rates measured in a laboratory experiment |
title_sort |
snow isotope diffusion rates measured in a laboratory experiment |
publishDate |
2011 |
url |
https://hdl.handle.net/11370/19894da2-72c4-4ae8-b70a-88b0bb604492 https://research.rug.nl/en/publications/19894da2-72c4-4ae8-b70a-88b0bb604492 https://doi.org/10.3189/002214311795306727 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Journal of Glaciology |
genre_facet |
Greenland Journal of Glaciology |
op_source |
Van der Wel , L G , Gkinis , V , Pohjola , V A & Meijer , H A J 2011 , ' Snow isotope diffusion rates measured in a laboratory experiment ' , Journal of Glaciology , vol. 57 , no. 201 , pp. 30-38 . https://doi.org/10.3189/002214311795306727 |
op_relation |
https://research.rug.nl/en/publications/19894da2-72c4-4ae8-b70a-88b0bb604492 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.3189/002214311795306727 |
container_title |
Journal of Glaciology |
container_volume |
57 |
container_issue |
201 |
container_start_page |
30 |
op_container_end_page |
38 |
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1800752628809859072 |