Start Date
1-8-2014 12:00 AM
End Date
26-5-2014 12:00 AM
Abstract
Ways of occurrence of elements of an internal drainage of glaciers and also origin of internal drainage systems as a whole are considered. It is shown that elements of an internal drainage can be formed either on the base of fissures and crevasses or by incision of water streams into ice from glacier surface. The basic way of glacier drainage is formed on the base of sliding plane which is formed closely to glacier bed and smooth all roughnesses of the bed. Spreading of water on the surface of this plane during spring time forms not effective drainage system however during ablation season drainage channels are formed along this sliding plane and it is an effective drainage system. The offered point of view explains selective erosion on the glacier bed, spring accelerations of ice movement velocity, formation of eskers and outbreaks of glacier-dammed lakes.
Included in
Internal Drainage Of Glaciers And Its Origin
Ways of occurrence of elements of an internal drainage of glaciers and also origin of internal drainage systems as a whole are considered. It is shown that elements of an internal drainage can be formed either on the base of fissures and crevasses or by incision of water streams into ice from glacier surface. The basic way of glacier drainage is formed on the base of sliding plane which is formed closely to glacier bed and smooth all roughnesses of the bed. Spreading of water on the surface of this plane during spring time forms not effective drainage system however during ablation season drainage channels are formed along this sliding plane and it is an effective drainage system. The offered point of view explains selective erosion on the glacier bed, spring accelerations of ice movement velocity, formation of eskers and outbreaks of glacier-dammed lakes.
