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Using Earth’s Field NMR to Study Brine Content in Antarctic Sea Ice: Comparison with Salinity and Temperature Estimates

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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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Acknowledgments

We acknowledge the New Zealand Antarctic Programme and the New Zealand Foundation for Research, Science and Technology for logistic and funding support. We are grateful to Dr Pat Langhorne for valuable advice and to Phillip Luey for technical assistance with equipment preparation.

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Authors and Affiliations

  1. School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand

    M. W. Hunter, R. Dykstra, M. H. Lim, T. G. Haskell & P. T. Callaghan

  2. Department of Food Science, University of Otago, Dunedin, New Zealand

    M. H. Lim

  3. Industrial Research Limited, Gracefield, Lower Hutt, New Zealand

    T. G. Haskell

Authors
  1. M. W. Hunter
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  2. R. Dykstra
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  3. M. H. Lim
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  4. T. G. Haskell
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  5. P. T. Callaghan
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Corresponding author

Correspondence to P. T. Callaghan.

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Hunter, M.W., Dykstra, R., Lim, M.H. et al. Using Earth’s Field NMR to Study Brine Content in Antarctic Sea Ice: Comparison with Salinity and Temperature Estimates. Appl Magn Reson 36, 1–8 (2009). https://doi.org/10.1007/s00723-009-0003-9

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  • DOI: https://doi.org/10.1007/s00723-009-0003-9

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