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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ftdtic:ADA026631 2023-05-15T16:37:08+02:00 Water Flow through Veins in Ice Colbeck,Samuel C. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1976-04 text/html http://www.dtic.mil/docs/citations/ADA026631 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA026631 en eng http://www.dtic.mil/docs/citations/ADA026631 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS 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 Text 1976 ftdtic 2016-02-20T11:11:46Z 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. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
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 |
spellingShingle |
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 Colbeck,Samuel C. Water Flow through Veins in Ice |
topic_facet |
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 |
description |
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. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Colbeck,Samuel C. |
author_facet |
Colbeck,Samuel C. |
author_sort |
Colbeck,Samuel C. |
title |
Water Flow through Veins in Ice |
title_short |
Water Flow through Veins in Ice |
title_full |
Water Flow through Veins in Ice |
title_fullStr |
Water Flow through Veins in Ice |
title_full_unstemmed |
Water Flow through Veins in Ice |
title_sort |
water flow through veins in ice |
publishDate |
1976 |
url |
http://www.dtic.mil/docs/citations/ADA026631 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA026631 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA026631 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
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1766027426927738880 |