Formation Of Ice Layer Research Articles

Ice Layers and Superimposition of Ice on the Summit and Slope of Vestfonna, Svalbard

ABSTRACT. The slopes of Vestfonna, which is a relatively small (7895 km2) dome-shaped icecap, are in this paper divided into two parts, one above the equilibrium line, where ice layers form in the snow pack and the other below the equilibrium line, where superimposed ice forms and ablation occurs. The main study of the formation of ice layers in the snow pack was carried out on the summit of Vestfonna, at Ahlmann Station (elevation 622 m). Thin ice layers in the uppermost part of the snow formed at the beginning of the melt season, when the snow was still cold and only a small amount of melt water had percolated downwards. The thickness of ice layers was found to increase with depth. Within the zone of superimposed ice measurements were made of crystal sizes in the ice layers. During the formation of these ice layers their grain sizes were recorded. Results of the crystallographic studies indicated that crystals in separate ice layers were

A Mechanism of Basal Ice-Layer Formation Involving Major Ice-Fabric Changes

AbstractAn opportunity to analyse the mechanism for the formation of a basal ice layer was provided by Glacier de Tsanfleuron in the Swiss Alps. This glacier has some lateral subglacial cavities in which a basal ice layer forms on the bedrock floor and is subsequently incorporated at the base of the glacier. Petrographic and crystallographic analyses of the different types of ice have provided a means of investigating the successive stages of the process. These analyses show major structural changes which provide field confirmation of the deformation mechanisms studied by several authors in laboratory experiments.

A Mechanism of Basal Ice-Layer Formation Involving Major Ice-Fabric Changes

AbstractAn opportunity to analyse the mechanism for the formation of a basal ice layer was provided by Glacier de Tsanfleuron in the Swiss Alps. This glacier has some lateral subglacial cavities in which a basal ice layer forms on the bedrock floor and is subsequently incorporated at the base of the glacier. Petrographic and crystallographic analyses of the different types of ice have provided a means of investigating the successive stages of the process. These analyses show major structural changes which provide field confirmation of the deformation mechanisms studied by several authors in laboratory experiments.

Formation of ice layer continuously segregated in soil freezing

Formation of ice layer continuously segregated in soil freezing

Stability of the interphase surface in the freezing of moist ground

It is suggested that the formation of ice layers should be regarded as a consequence of a loss of stability of the motion of the freezing front. The kinetics of the freezing process is investigated and a stability criterion is obtained.

Formation of an ice layer of given thickness by accumulation of a liquid on a cooled-cylindrical surface

An approximate solution is given to the problem of accumulation of a liquid on a cylindrical surface, taking into account thermal resistivity. Particular cases are considered.