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TitleA sensitive and robust strain-meter for ice studies
Publication TypeJournal Article
Year of Publication1994
AuthorsHaskell, T.G., and Robinson W.H.
JournalCold Regions Science and Technology
Pagination99 - 104
Date Published1994
ISSN0165232X (ISSN)
KeywordsAntarctica, Erebus Glacier, Creep, floating ice sheet, horizontal displacement, ice mechanics, instrumentation, Relative horizontal displacement, Sea ice, Strain gages, strain gauges, Strain measurement, Strain meter, Thermal effects, Water waves, Wave transmission, waves
AbstractA strain-meter to measure the relative horizontal displacement between two plates embedded 500 mm apart in ice, for use in both fresh and sea ice, has been developed and tested in the Antarctic at temperatures down to -20°C. In practice the strain-meter has a sensitivity of about 8 × 10- and is unaffected by the vertical accelerations which can occur when waves propagate through floating ice sheets. It is robust enough to allow quick installation, can be buried in the ice, has precise autozeroing functions which enable creep to be monitored, has a response time less than 0.02 sec and can present the strain results in a variety of formats. The strain-meter has been used to study waves in floating ice-sheets generated by moving vehicles, and to monitor strains within the Erebus Glacier Tongue. © 1994.

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