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Freezing rate determination by the isotopic composition of the ice

par Souchez, Roland ;Tison, Jean-Louis ;Jouzel, Jean
Référence Geophysical Research Letters, 14, 6, page (599-602)
Publication Publié, 1987

Article révisé par les pairs

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Résumé :

The distribution of an isotopic species, HDO (deuterium) or H2 18O (oxygen), in ice formed by the migration of a well‐defined freezing front in water is dependent on the freezing rate. Development of a box diffusion model combined with the boundary layer concept leads to a possibility of prediction of the freezing rate in nature by the determination of the isotopic composition of the ice in δD or δ18O. The isotopic distribution in ice formed during experiments conducted with variable freezing rates gives results in accordance with the model. Investigation on lake ice formed under well‐known climatic conditions provides a further test of the model. Copyright 1987 by the American Geophysical Union.