Grain size-sensitive creep in ice II

Science

Volumn 311, Issue 5765, 2006, Pages 1267-1269

  Kubo, Tomoaki ^a   Durham, William B ^b   Stern, Laura A ^c   Kirby, Stephen H ^c  

^a KYUSHU UNIVERSITY   (Japan)

^b LAWRENCE LIVERMORE NATIONAL LABORATORY   (United States)

^c U S GEOLOGICAL SURVEY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CREEP TESTING; ELECTRON MICROSCOPY; PLASTIC PRODUCTS; RHEOLOGY; SOLAR SYSTEM; STRAIN; STRESS ANALYSIS;

CREEP MECHANISM; CRYOGENIC SCANNING; GRAIN SIZE; GRAIN SIZE-SENSITIVE CREEP; ICE II; ICY MOONS;

GRAIN SIZE AND SHAPE;

ICE; WATER;

CREEP; GRAIN SIZE; ICE; RHEOLOGY;

ARTICLE; ASTRONOMY; CHEMICAL STRUCTURE; CORRELATION ANALYSIS; FLOW KINETICS; MOON; PARTICLE SIZE; PRIORITY JOURNAL; SCANNING ELECTRON MICROSCOPY; STRESS; STRUCTURE ANALYSIS; TEMPERATURE DEPENDENCE;

CHEMISTRY, PHYSICAL; ICE; JUPITER; MICROSCOPY, ELECTRON, SCANNING; NEPTUNE; PLANETS; PRESSURE; RHEOLOGY; SATURN; URANUS;

EID: 33644682683     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1121296     Document Type: Article

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22. After the creep experiments in the stability field of ice II, the pressure was slowly decreased to the ice I stability field at the rate of about 7 MPa/min at constant temperature of 200 K. When the back 11-1 transition started at about 140 MPa, which was identified from the slight slowing of the rate of pressure decrease, the pressure was increased back to that at the I-II phase boundary. The sample length, which can be measured by the piston contact to the sample (12), showed slight lengthening due to the partial back transformation. The sample was then cooled along the I-II phase boundary to <100 K, depressurized, removed from the vessel, and stored at 77 K.
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28. We thank R. Oscarson and J. Pinkston of the U.S. Geological Survey (USGS) for their technical assistance and I. M. Chou and D. Moore (USGS) for helpful reviews of the manuscript. This work was supported by the Japan Society for the Promotion of Science postdoctoral fellowships for research abroad and the grant for basic science research projects of The Sumitomo Foundation (to T.K.) and by NASA under order W-19,868. Work was performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract W-7405-ENG-48.