Skip to main content Accessibility help
×
Home

Modelling the change in structure and mechanical properties in dry-snow densification to ice

  • Vladimir N. Golubev (a1) and Anatoly D. Frolov (a2)

Abstract

The regular packing of spheres or polyhedrons of various shapes linked by rigid bonds is presented and discussed as a model of snow structure. Basic structural parameters of this model are: the coordination number and introduced dimensionless factors of friability and rigidity. The snow densification is described as successive changes of these parameters. Use of the model allows us to relate the density increase from ~130 to ~320, ~550, ~700, ~820 and 917 kg m−3, while the coordination number of the structure increases accordingly from 3 (friable hexagonal) to 4 (tetrahedral), 6 (cubic), 8, 10, 12 (dense hexagonal). These structural changes are in good agreement with the critical densities established in experimental studies of snow densification and the physical properties of snow. It is shown that the model presented allows us to estimate the mechanical properties of ice-porous media: Young’s modulus, Poisson’s ratio and strength.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Modelling the change in structure and mechanical properties in dry-snow densification to ice
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Modelling the change in structure and mechanical properties in dry-snow densification to ice
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Modelling the change in structure and mechanical properties in dry-snow densification to ice
      Available formats
      ×

Copyright

References

Hide All
Anderson., D. L and Benson., C. S. 1963. The densification and diagenesis of snow: properties, processes and applications. In KinRery., W. D.. ed. Ice and snow: properties, processes, and applications. Cambridge, MA, M.I.T. Press, 391411.
Frolov, A. D. and Fedyukin., I.V. 1996. Akustichcskiye kharakteristiki snezh-no-ledyanych obrazonvanii plotnost’yu 300-917 kgm−3]. [Acoustic characteristics of snow ice formation in Uie density range from 300-917 kgm−3 . In Yamslichikov., V. S., ed. Problemy genakusti hi: melndika i sredstva [Problems of geoacoustics: techniques and tools]. Moscow. Russian Acoustic Society, 181184.
Frolov, A. D. and Fedyukin., I.V 1998. Elastic properties of snow-ice formations in their whole density range. Ann. Glacial. 26 (see paper in this volume.)
Golubev, V. N. 1982. Zavisimost’ uprugikb svoystv snega ot yego structury [Dependence of the elastic properties of the snow structure], Mater. Glyatsiol. Issled. 44,6573.
Golubev., V. N. 1987. Nekotoryye zakonomernosti prostranstvennoi neodnorodnosti svoystv i strirniya snezhiiogo pokrova ua sklonakh gor [Some regularities of the spatial non-uniformity of snow-cover properties and structure on mountain slopes]. In Triuly II Vsesnyuznogo Soveshchaniya po Lavinam [Proceedings. 2nd All-Union Symposium on Avalanches]. Leningrad. Gidrometeoizdat, 220228.
Golubev, V. N.. Voitkovskiy, V. K. and Boltneva., T. V. 1982. Vliyaniye struktury na mekhanicheskiye svoystva snega [The influence of snow structure on its mechanical properties). Mater. Glyatsiol Issled. 45,109113.
Gubler., H. 1978. Dclermination of the mean number of bonds per snow grain and of the dependence of the tensile strength of snow on stereological parameters. J. Glaciol., 20(83), 329341.
Kry, P.R. 1975. Quantitative stereological analysis of grain bonds in snow. J Glaciol., 14(72), 467177.
Maeno., N. 1978. The electrical behaviors of Antarctic ice drilled at Mizuho Station, East Antarctica. National Institute of Polar Research. Memoirs 10, Special Issue. 7794.
Mellor, M. 1977. Engineering properties of snow. J. Glaciol. 19(81),1566.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed