Water Flow through Veins in Ice

Water flow through the vein structure of temperature ice is described as Darcian flow in which the pressure gradient is determined from vein size and overburden pressure. A solution method for the resulting equation is given and two special cases are considered. For steady flow the equilibrium vein...

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Bibliographic Details
Main Author: Colbeck,Samuel C.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1976
Subjects:
Hydrology
Limnology and Potamology
Snow
Ice and Permafrost
*WATER FLOW
*ICE
*RUNOFF
*GLACIERS
PRESSURE GRADIENTS
MATHEMATICAL MODELS
PERMEABILITY
POROSITY
FLOW RATE
SNOW COVER
PORE PRESSURE
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA026631
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA026631
Description
Summary:Water flow through the vein structure of temperature ice is described as Darcian flow in which the pressure gradient is determined from vein size and overburden pressure. A solution method for the resulting equation is given and two special cases are considered. For steady flow the equilibrium vein size is a function of depth and, by neglecting the effects of diffusion, it is shown that flow perturbations introduced at the surface propagate downward at a constant speed. These perturbations propagate so slowly that even annual surface fluctuations of flow may be eliminated by diffusion before reaching the bottom of the glacier.

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