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Experimental deformation of polycrystalline H2O ice at high pressure and low temperature - Preliminary resultsA preliminary study is carried out of involving 70 constant strain deformation tests on pure polycrystalline H2O ice under conditions covering most of the stability field of ice I sub h. Brittle failure of I sub h is found to be promoted by lower P, lower T, and higher strain rates. Ductile flow is found to be promoted by higher P, higher T, and lower strain rates. The brittle failure of ice I sub h is found to be most unusual. The fracture strength is a positive function of P only below 50 MPa. At pressures greater than this, the fracture strength is independent of P, and the fracture plane lies approximately 45 deg from the load axis. It is believed that existing extrapolation based on existing experimental data to Ganymede and Callisto may be badly in error.
Document ID
19840035699
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Durham, W. B.
(Geological Survey Menlo Park, CA, United States)
Heard, H. C.
(California, University Lawrence Livermore National Laboratory, Livermore, CA, United States)
Kirby, S. H.
(U.S. Geological Survey Menlo Park, CA, United States)
Date Acquired
August 12, 2013
Publication Date
November 15, 1983
Publication Information
Publication: Journal of Geophysical Research, Supplement
Volume: 88
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
84A18486
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-15070
CONTRACT_GRANT: W-7405-ENG-48
Distribution Limits
Public
Copyright
Other

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