Encyclopedia of Soil Science

2008 Edition
| Editors: Ward Chesworth

Conductivity, Thermal

  • Ward Chesworth
  • Marta Camps Arbestain
  • Felipe Macías
  • Otto Spaargaren
  • Otto Spaargaren
  • Y. Mualem
  • H. J. Morel‐Seytoux
  • William R. Horwath
  • G. Almendros
  • Ward Chesworth
  • Paul R. Grossl
  • Donald L. Sparks
  • Otto Spaargaren
  • Rhodes W. Fairbridge
  • Arieh Singer
  • Hari Eswaran
  • Erika Micheli
  • Otto Spaargaren
  • P. M. Huang
  • Arieh Singer
  • Charles E. Weaver
  • B. K. G. Theng
  • Iain M. Young
  • Keith Paustian
  • R. J. Heck
  • Charles W. Finkl
  • Herman Bouwer
  • Amos Hadas
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-3995-9_126
Thermal conductivity is the time rate of heat transfer by conductance through unit thickness across a unit area due to a unit temperature difference; the unit used is Cal cm −1 s −1 °C −1. Since the soil is made up of granulated solids, between which are voids filled with water, air, or both, its thermal conductivity depends on the volume fraction and thermal conductivity of each of its constituents. Moreover, the size, shape, mode of the solid particles arrangement (see  Structure), and consequently the solid‐water interfacial relationship affect the soil thermal conductivity. Table C21 gives values of thermal conductivity for the various soil constituents and soils.
Table C21

Thermal conductivity of soils and soil constituents

Material

Thermal Conductivity [λ (Cal cm −1 s −1 °C −1)]

Temperature (°C)

S (% Saturation)

Source

 

Quartz

 21.4 × 10 −3

20

de Vries (1963)

 
 

 19.0 × 10 −3

40

de Vries (1963)

 
 

 17.8 × 10 −3

60

de Vries (1963)

 

Sand dry

 3.7 × 10 −3

100

van Duin (1963...

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References

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  11. Reynolds, W.D., Elrick, D.E., Youngs, E.G., and Amoozegar, A., 2002. Field methods (vadose and saturated zone techniques). In Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4 – Physical Methods. Madison, WI: Soil Science Society of America, pp. 817–878.Google Scholar
  12. Rosenberg, N.J., 1974. Microclimatical: The Biological Environment. New York: Wiley, 315 pp.Google Scholar
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  14. de Vries, D.A., 1963. Thermal properties of soils. In Van Wijk, W.R., ed., Physics of Plant Environment. North Holland, Amsterdam: pp. 210–235.Google Scholar

Copyright information

© Springer 2008

Authors and Affiliations

  • Ward Chesworth
  • Marta Camps Arbestain
  • Felipe Macías
  • Otto Spaargaren
  • Otto Spaargaren
  • Y. Mualem
  • H. J. Morel‐Seytoux
  • William R. Horwath
  • G. Almendros
  • Ward Chesworth
  • Paul R. Grossl
  • Donald L. Sparks
  • Otto Spaargaren
  • Rhodes W. Fairbridge
  • Arieh Singer
  • Hari Eswaran
  • Erika Micheli
  • Otto Spaargaren
  • P. M. Huang
  • Arieh Singer
  • Charles E. Weaver
  • B. K. G. Theng
  • Iain M. Young
  • Keith Paustian
  • R. J. Heck
  • Charles W. Finkl
  • Herman Bouwer
  • Amos Hadas

There are no affiliations available