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La formation de glace cubique sous des conditions liées à l'atmosphère terrestre.

The formation of cubic ice under conditions relevant to the Earth's atmosphere.

Auteurs : MURRAY B. J., KNOPF D. A., BERTRAM A. K.

Type d'article : Article

Résumé

An important mechanism for ice cloud formation in the Earth's atmosphere is homogeneous nucleation of ice in aqueous droplets, and this process is generally assumed to produce hexagonal ice. However, there are some reports that the metastable crystalline phase of ice, cubic ice, may form in the Earth's atmosphere. In this article the authors present laboratory experiments demonstrating that cubic ice forms when micrometer-sized droplets of pure water and aqueous solutions freeze homogeneously at cooling rates approaching those found in the atmosphere.

Détails

  • Titre original : The formation of cubic ice under conditions relevant to the Earth's atmosphere.
  • Identifiant de la fiche : 2005-2297
  • Langues : Anglais
  • Sujet : Environnement, Généralités
  • Source : Nature - vol. 434 - n. 7030
  • Date d'édition : 10/03/2005

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