Fracture toughness of ice and firn determined from the modified ring test

M. P. Fischer, R. B. Alley, T. Engelder

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Average fracture toughness is 145.7 kPa m1/2 for the manufactured ice and 108.6 kPa m1/2 for the firn. Comparison between the ice and firn suggests that ice-fracture toughness decreases with decreasing density (i.e. increasing porosity), suggesting lateral and vertical variations in the near-surface fracture resistance of glaciers and ice sheets may be related to firn densification. The modified ring test has many disadvantages over conventional, notch-based specimens. -from Authors

Original languageEnglish (US)
Pages (from-to)383-394
Number of pages12
JournalJournal of Glaciology
Volume41
Issue number138
DOIs
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

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