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Author (up) Glen, J.W. url  openurl
  Title The creep of polycrystalline ice Type Journal Article
  Year 1955 Publication Proc. R. Soc. Lond. A Abbreviated Journal  
  Volume 228 Issue 1175 Pages 519-538  
  Abstract Polycrystalline blocks of ice have been tested under compressive stresses in the range from 1 to 10 bars at temperatures from –13°C to the melting-point. Under these conditions ice creeps in a manner similar to that shown by metals at high temperatures; there is a transient creep component and also a continuing or quasi-viscous component. The relation between the minimum observed flow rate , the applied stress σ and the absolute temperature T is = B exp ( -Q/RT) σn, where R is the gas constant, and B, n and Q are constants; the value of n is about 3.2, that of Q is 32 kcal/mole, and that of B is 7 x 1024 if the stress is measured in bars and the strain rate in years-1. At the higher stresses a third, accelerating stage of creep was observed; on the basis of the appearance and behaviour of sections cut from the specimens, this acceleration was attributed to recrystallization. The effect of changing the load during a test has also been studied; for large reductions creep recovery was observed. The results of these tests are discussed in connexion with previous work on metals and ice, and also with measurements of glacier flow.  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0080-4630, 2053-9169 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number refbase @ user @ glen_creep_1955 Serial 17474  
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