Using Earth’s Field NMR to Study Brine Content in Antarctic Sea Ice: Comparison with Salinity and Temperature Estimates |
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| Authors: | M W Hunter R Dykstra M H Lim T G Haskell and P T Callaghan |
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| Institution: | (1) School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand;(2) Department of Food Science, University of Otago, Dunedin, New Zealand;(3) Industrial Research Limited, Gracefield, Lower Hutt, New Zealand; |
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| Abstract: | We report on the use in Antarctica of a portable nuclear magnetic resonance spectrometer which utilizes the Earth’s magnetic
field. We obtain estimates of brine content, in samples of sea ice extracted at different depths from the annual ice of McMurdo
Sound, in the vicinity of Cape Evans, Ross Island. These measurements are correlated with estimates of brine content obtained
from temperature and salinity measurements at each depth, using a knowledge of the phase diagram. |
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