Snow Compaction - Investigation of Metamorphism of Snow
Although processing and compacting increase the density and bearing capacity of surface snow for use as roads and trails, these processes have not been able to achieve the degree of densification that occurs naturally as snow slowly metamorphoses to glacier ice. A study was made at the Naval Civil E...
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ftdtic:AD0716417 2023-05-15T16:37:32+02:00 Snow Compaction - Investigation of Metamorphism of Snow Stehle, N. S. NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA 1970-12 text/html http://www.dtic.mil/docs/citations/AD0716417 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0716417 en eng http://www.dtic.mil/docs/citations/AD0716417 Approved for public release; distribution is unlimited. DTIC AND NTIS Snow Ice and Permafrost Civil Engineering *SNOW DENSITY PARTICLE SIZE TEMPERATURE PERMEABILITY LOADS(FORCES) PRESSURE NAVAL RESEARCH ROADS SOLAR RADIATION RUNWAYS TRAFFICABILITY *SNOW COMPACTION Text 1970 ftdtic 2016-02-21T11:57:29Z Although processing and compacting increase the density and bearing capacity of surface snow for use as roads and trails, these processes have not been able to achieve the degree of densification that occurs naturally as snow slowly metamorphoses to glacier ice. A study was made at the Naval Civil Engineering Laboratory of the processes and influences of the major mechanisms that control snow metamorphism--grain size, pressure, temperature and solar radiation--in order to provide a basis for developing better techniques for higher strength snow pavements. It was concluded that maximum snow strengths are achieved at or near a critical density of 60 gm/cu cm, followed by bond growth, or age hardening, at temperatures between -12C and -7C. In addition, as distribution of applied loads with depth is essential to the development of operational criteria for such pavements, it is recommended that research be conducted to develop this knowledge. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Civil Engineering *SNOW DENSITY PARTICLE SIZE TEMPERATURE PERMEABILITY LOADS(FORCES) PRESSURE NAVAL RESEARCH ROADS SOLAR RADIATION RUNWAYS TRAFFICABILITY *SNOW COMPACTION |
spellingShingle |
Snow Ice and Permafrost Civil Engineering *SNOW DENSITY PARTICLE SIZE TEMPERATURE PERMEABILITY LOADS(FORCES) PRESSURE NAVAL RESEARCH ROADS SOLAR RADIATION RUNWAYS TRAFFICABILITY *SNOW COMPACTION Stehle, N. S. Snow Compaction - Investigation of Metamorphism of Snow |
topic_facet |
Snow Ice and Permafrost Civil Engineering *SNOW DENSITY PARTICLE SIZE TEMPERATURE PERMEABILITY LOADS(FORCES) PRESSURE NAVAL RESEARCH ROADS SOLAR RADIATION RUNWAYS TRAFFICABILITY *SNOW COMPACTION |
description |
Although processing and compacting increase the density and bearing capacity of surface snow for use as roads and trails, these processes have not been able to achieve the degree of densification that occurs naturally as snow slowly metamorphoses to glacier ice. A study was made at the Naval Civil Engineering Laboratory of the processes and influences of the major mechanisms that control snow metamorphism--grain size, pressure, temperature and solar radiation--in order to provide a basis for developing better techniques for higher strength snow pavements. It was concluded that maximum snow strengths are achieved at or near a critical density of 60 gm/cu cm, followed by bond growth, or age hardening, at temperatures between -12C and -7C. In addition, as distribution of applied loads with depth is essential to the development of operational criteria for such pavements, it is recommended that research be conducted to develop this knowledge. |
author2 |
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA |
format |
Text |
author |
Stehle, N. S. |
author_facet |
Stehle, N. S. |
author_sort |
Stehle, N. S. |
title |
Snow Compaction - Investigation of Metamorphism of Snow |
title_short |
Snow Compaction - Investigation of Metamorphism of Snow |
title_full |
Snow Compaction - Investigation of Metamorphism of Snow |
title_fullStr |
Snow Compaction - Investigation of Metamorphism of Snow |
title_full_unstemmed |
Snow Compaction - Investigation of Metamorphism of Snow |
title_sort |
snow compaction - investigation of metamorphism of snow |
publishDate |
1970 |
url |
http://www.dtic.mil/docs/citations/AD0716417 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0716417 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0716417 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766027822086750208 |