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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Mass flux and recrystallization of snow crystals aggregates at the microstructural levelтезисы доклада
- Авторы: Sokratov S.A., Schneebeli M.
- Сборник: XXIII General Assembly of the International Union of Geodesy and Geophysics; June 30–July 11, 2003; Sapporo, Japan: Abstracts Week B
- Тезисы
- Год издания: 2003
- Место издания: International Union of Geodesy and Geophysics IUGG2003 Local Organizing Committee Sapporo
- Первая страница: JSM15/07A/B18-003 (p. B.84)
- Аннотация: Most modern practical applications require not only the understanding of the crystal growth phenomena at the single-crystal scale, but also knowledge of the interactions of growing crystals in multi-element systems. Up to now, there is no accepted theory fully describing these processes. Snow is the material corresponding to a multi-element system naturally being at the temperature very close to the melting point. The physical conditions for the formation of different shapes for single ice crystals are well known. However, very few data are available on the corresponding processes in snow as a multi-elements system. Collecting data on how different the shapes and the activity of recrystallization are in snow is of great interest not only to snow physics, but to material science in general. Laboratory experiments and mathematical modeling are done concurrently to understand the mechanism of crystal growth in snow under regulated thermophysical conditions. Experiments are made in a cold laboratory on samples of natural snow. The time-variation of the shape, size and specific surface area, and the corresponding change in the thermophysical properties of the snow samples are observed undisturbed using X-ray computed micro-tomography simultaneously with heat-flux and temperature measurements. The results of this study are presented.
- Добавил в систему: Сократов Сергей Альфредович