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

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

doi:10.1017/S0022143000016257

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

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

Geosciences

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

Average fracture toughness is 145.7 kPa m^1/2 for the manufactured ice and 108.6 kPa m^1/2 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 language	English (US)
Pages (from-to)	383-394
Number of pages	12
Journal	Journal of Glaciology
Volume	41
Issue number	138
DOIs	https://doi.org/10.1017/S0022143000016257
State	Published - 1995

All Science Journal Classification (ASJC) codes

Earth-Surface Processes

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10.1017/S0022143000016257

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title = "Fracture toughness of ice and firn determined from the modified ring test",

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",

author = "Fischer, {M. P.} and Alley, {R. B.} and T. Engelder",

year = "1995",

doi = "10.1017/S0022143000016257",

language = "English (US)",

volume = "41",

pages = "383--394",

journal = "Journal of Glaciology",

issn = "0022-1430",

publisher = "Cambridge University Press",

number = "138",

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AU - Fischer, M. P.

AU - Alley, R. B.

AU - Engelder, T.

PY - 1995

Y1 - 1995

N2 - 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

AB - 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

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JO - Journal of Glaciology

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IS - 138

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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