Field measurements of soil thermal conductivity
Data representing the seasonal variation of thermal conductivity of the ground at depths within the seasonally active freezing/thawing zone are presented for a number of different soil conditions at four sites across Canada. An inexpensive probe apparatus suitable for routine field measurements is d...
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National Research Council of Canada. Institute for Research in Construction
1986
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Online Access: | https://doi.org/10.4224/40001817 https://nrc-publications.canada.ca/eng/view/ft/?id=39564c32-218c-417b-aebf-99ace568e60e https://nrc-publications.canada.ca/eng/view/object/?id=39564c32-218c-417b-aebf-99ace568e60e https://nrc-publications.canada.ca/fra/voir/objet/?id=39564c32-218c-417b-aebf-99ace568e60e |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20375288 2023-05-15T17:58:16+02:00 Field measurements of soil thermal conductivity Goodrich, L. E. 1986 text 12 p. https://doi.org/10.4224/40001817 https://nrc-publications.canada.ca/eng/view/ft/?id=39564c32-218c-417b-aebf-99ace568e60e https://nrc-publications.canada.ca/eng/view/object/?id=39564c32-218c-417b-aebf-99ace568e60e https://nrc-publications.canada.ca/fra/voir/objet/?id=39564c32-218c-417b-aebf-99ace568e60e eng eng National Research Council of Canada. Institute for Research in Construction Paper (National Research Council of Canada. Institute for Research in Construction); no. IRC-P-1364, Publication date: 1986 doi:10.4224/40001817 permafrost pergélisol soils sol thermal conductivity conductivité thermique active layer (soils) couche active (sol) clay soils sol argileux silt limon (sol) field measurements phase relationships drying clay peat article 1986 ftnrccanada https://doi.org/10.4224/40001817 2023-01-15T00:01:08Z Data representing the seasonal variation of thermal conductivity of the ground at depths within the seasonally active freezing/thawing zone are presented for a number of different soil conditions at four sites across Canada. An inexpensive probe apparatus suitable for routine field measurements is described. In all the cases examined, significant seasonal variations were confined to the first few decimetres. In addition to distinct seasonal differences associated with phase change, quite large changes occurred during the period when the soil was thawed in those cases where seasonal drying was possible. Below the seasonally active zone, thawed soil conductivities did not differ greatly among the three nonpermafrost sites in spite of soil composition ranging from marine clay to sandy silt. The data suggest that, even within a given soil layer, quite significant differences in thermal conductivity may be encountered in engineering structures such as embankments, presumably because of differences in drainage conditions. On présente des données sur la variation saisonnière de la conductivité thermique du sol au niveau de la couche active gel/dégel pour diverses conditions du sol à quatre endroits différents au Canada. On décrit également un appareil de mesure de conductivité des sols qui, tout en étant peu coûteux, convient bien aux mesures sur le terrain. Dans tous les cas étudiés, les variations saisonnières furent importantes seulement dans les premiers décimètres de sol. En plus des différences saisonnières marquées associées au changement de phase, on a constaté d'importantes variations durant la période au cours de laquelle le sol était dégelé dans les cas où les conditions permettaient un assèchement saisonnier. Mais, en profondeur, les valeurs étaient assez semblables à trois des sites, malgré des différences de composition allant de l'argile marine aux limon sableux. Les données suggèrent que, même à l'intérieur d'une couche de sol donnée, des différences marquées de conductivité thermique peuvent être ... Article in Journal/Newspaper permafrost pergélisol National Research Council Canada: NRC Publications Archive Canada |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
permafrost pergélisol soils sol thermal conductivity conductivité thermique active layer (soils) couche active (sol) clay soils sol argileux silt limon (sol) field measurements phase relationships drying clay peat |
spellingShingle |
permafrost pergélisol soils sol thermal conductivity conductivité thermique active layer (soils) couche active (sol) clay soils sol argileux silt limon (sol) field measurements phase relationships drying clay peat Goodrich, L. E. Field measurements of soil thermal conductivity |
topic_facet |
permafrost pergélisol soils sol thermal conductivity conductivité thermique active layer (soils) couche active (sol) clay soils sol argileux silt limon (sol) field measurements phase relationships drying clay peat |
description |
Data representing the seasonal variation of thermal conductivity of the ground at depths within the seasonally active freezing/thawing zone are presented for a number of different soil conditions at four sites across Canada. An inexpensive probe apparatus suitable for routine field measurements is described. In all the cases examined, significant seasonal variations were confined to the first few decimetres. In addition to distinct seasonal differences associated with phase change, quite large changes occurred during the period when the soil was thawed in those cases where seasonal drying was possible. Below the seasonally active zone, thawed soil conductivities did not differ greatly among the three nonpermafrost sites in spite of soil composition ranging from marine clay to sandy silt. The data suggest that, even within a given soil layer, quite significant differences in thermal conductivity may be encountered in engineering structures such as embankments, presumably because of differences in drainage conditions. On présente des données sur la variation saisonnière de la conductivité thermique du sol au niveau de la couche active gel/dégel pour diverses conditions du sol à quatre endroits différents au Canada. On décrit également un appareil de mesure de conductivité des sols qui, tout en étant peu coûteux, convient bien aux mesures sur le terrain. Dans tous les cas étudiés, les variations saisonnières furent importantes seulement dans les premiers décimètres de sol. En plus des différences saisonnières marquées associées au changement de phase, on a constaté d'importantes variations durant la période au cours de laquelle le sol était dégelé dans les cas où les conditions permettaient un assèchement saisonnier. Mais, en profondeur, les valeurs étaient assez semblables à trois des sites, malgré des différences de composition allant de l'argile marine aux limon sableux. Les données suggèrent que, même à l'intérieur d'une couche de sol donnée, des différences marquées de conductivité thermique peuvent être ... |
format |
Article in Journal/Newspaper |
author |
Goodrich, L. E. |
author_facet |
Goodrich, L. E. |
author_sort |
Goodrich, L. E. |
title |
Field measurements of soil thermal conductivity |
title_short |
Field measurements of soil thermal conductivity |
title_full |
Field measurements of soil thermal conductivity |
title_fullStr |
Field measurements of soil thermal conductivity |
title_full_unstemmed |
Field measurements of soil thermal conductivity |
title_sort |
field measurements of soil thermal conductivity |
publisher |
National Research Council of Canada. Institute for Research in Construction |
publishDate |
1986 |
url |
https://doi.org/10.4224/40001817 https://nrc-publications.canada.ca/eng/view/ft/?id=39564c32-218c-417b-aebf-99ace568e60e https://nrc-publications.canada.ca/eng/view/object/?id=39564c32-218c-417b-aebf-99ace568e60e https://nrc-publications.canada.ca/fra/voir/objet/?id=39564c32-218c-417b-aebf-99ace568e60e |
geographic |
Canada |
geographic_facet |
Canada |
genre |
permafrost pergélisol |
genre_facet |
permafrost pergélisol |
op_relation |
Paper (National Research Council of Canada. Institute for Research in Construction); no. IRC-P-1364, Publication date: 1986 doi:10.4224/40001817 |
op_doi |
https://doi.org/10.4224/40001817 |
_version_ |
1766166840602525696 |