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Deformation of the Arctic Ocean Sea Ice Cover between November 1996 and April 1997: A Qualitative Survey

  • Ronald Kwok
Part of the Solid Mechanics and Its Applications book series (SMIA, volume 94)

Abstract

Quasi-linear features of the scale of kilometers to hundreds of kilometers can be observed in the high-resolution deformation fields of the sea ice cover produced by the RADARSAT Geophysical Processor System. They appear as sharp discontinuities separating regions of uniform ice motion. These features are expressions of one of three kinematic processes: openings, closings, or shear. Here, we refer to them as linear kinematic features (LKFs). Open water is created during an opening event and ridges are formed during a closing event. Shear, however, does not always result in convergence or divergence that modify the sea ice thickness distribution. These large-scale patterns of LKFs, seem to be persistent with a time scale approaching a month suggesting anisotropic material behavior. The character of the ice cover deformation is sampled by RGPS grid cells with dimensions of approximately 10 km on a side. In this paper, we provide a qualitative survey of the development of these features over a six-month period between November 1996 and April 1997 and discuss their implications on the modeling of sea ice dynamics.

Keywords

Arctic Ocean Slip Line Advance Very High Resolution Radiometer Qualitative Survey Western Arctic Ocean 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Cavalieri, D. J., P. Gloersen, and W. J. Campbell. 1984. Determination of sea ice parameters from Nimbus 7 SMMR, J. Geophys. Res., 89(D4), 5355–5369.ADSCrossRefGoogle Scholar
  2. Coon, M. D., G. S. Knoke, D. C. Echert, and R. S. Pritchard. 1998. The architecture of an anisotropic elastic-plastic sea ice mechanics constitutive law, J. Geophys. Res., 103(C10), 21915–21925.ADSCrossRefGoogle Scholar
  3. Cunningham, G. F., R. Kwok, and J. Banfield. 1994. Ice lead orientation characteristics in the winter Beaufort Sea. Proceedings of IGARSS, Pasadena, CA.Google Scholar
  4. Erlingsson, B. 1998. Two-dimensional deformation patterns in sea ice, J. Glacio., 34(118), 301–308.ADSGoogle Scholar
  5. Flato, G. and W. D. Hibler III. 1995. Ridging and strength in modeling the thickness distribution of Arctic Sea Ice, J. Geophys. Res., 100 (C6), 18611–18626.ADSCrossRefGoogle Scholar
  6. Hibler, W. D. III,. 1979. A dynamic thermodynamic sea ice model, J. Geophys. Res., 9(4), 815–846.Google Scholar
  7. Hibler, W. D. III and E. M. Schulson. 2000. On modeling the anisotropic failure of flawed sea ice, J. Geophys. Res., 105 (C7), 17105–17120.ADSCrossRefGoogle Scholar
  8. Hibler, W. D. III, Modeling the formation and evolution of oriented fractures in sea-ice, Ann. Glacio. In press.Google Scholar
  9. Hopkins, M. A., J. Tuhkuri, and M. Lensu. 1999. Rafting and ridging of ice sheets, J. Geophys. Res., 104 (C6), 13605–13613.ADSCrossRefGoogle Scholar
  10. Kwok, R., D. A. Rothrock, H. L. Stern and G. F. Cunningham. 1995. Determination of Ice Age using Lagrangian Observations of Ice Motion, IEEE Trans. Geosci. Remote Sens., 33(2), 392–400.ADSCrossRefGoogle Scholar
  11. Kwok, R. 1998.The RADARSAT Geophysical Processor System, in: Analysis of SAR data of the Polar Oceans, C. Tsatsoulis and R. Kwok, eds., Springer-Verlag, Berlin, 235–257.CrossRefGoogle Scholar
  12. Li, S., Z. Cheng, W. F. Weeks. 1995. A grid based algorithm for the extraction of intermediate-scale sea ice deformation descriptors from SAR ice motion products, Int. J. Remote Sens., 16 (17), 3267–3286.ADSCrossRefGoogle Scholar
  13. Lindsay, R. W. and D. A. Rothrock. 1995. Arctic sea ice leads from advanced very high resolution radiometer images, J. Geophys. Res., 100(C3), 4533–4544.ADSCrossRefGoogle Scholar
  14. Lindsay, R., H. Stern, D. A. Rothrock, Y. Yu, and R. Kwok. 2000. Validation of RADARSAT Geophysical Processor System Products, (http://psc.washington.edu/).Google Scholar
  15. Marko, J. R., and R. E. Thomson. 1977.Rectilinear leads and internal motions in the ice pack of the western Arctic Ocean, J. Geophys. Res. , 82(6), 979–987.ADSCrossRefGoogle Scholar
  16. Overland, J. E., S. L McNutt, S. Salo, J. Groves and S. S. Li. 1998. Arctic sea ice as a granular plastic, J. Geophys. Res., 103 (C10), 21845–21867.ADSCrossRefGoogle Scholar
  17. Stern, H. L., D. A. Rothrock and R. Kwok. 1995. Open Water Production in Arctic Sea Ice: Satellite measurements and model parameterizations, J. Geophys. Res., 100 (C10), 20601–20612.ADSCrossRefGoogle Scholar
  18. Yu, Y, and D. A. Rothrock. 1966. Thin ice thickness from satellite thermal imagery, J. Geophys. Res., 101(C10), 25753–25766.ADSGoogle Scholar
  19. Zhang, Y., Maslowski, W., and Semtner, A. J. 1999.Impact of mesoscale ocean currents on sea ice in high-resolution Arctic ice and ocean simulations, J. Geophys. Res., 104(C8), 18,409–18,430.ADSCrossRefGoogle Scholar
  20. Zhang, J., W. Hibler, M. Steele, and D. Rothrock. 1998. Arctic ice-ocean modeling with and without climate restoring, J. Phys. Oceanogr., 28, 191–217.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • Ronald Kwok
    • 1
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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