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Ocean wave speed in the Antarctic marginal ice zone

  • Colin Fox (a1) and Tim G. Haskell (a2)

Abstract

The propagation of ocean waves in the marginal ice zone (MIZ) is investigated with the aim of determining whether the loading and scattering of waves by ice floes is significant. Measurements made using instrumented ice floes in the MIZ north of the Ross Sea, Antarctica, during June 1998 are used to determine the frequency-wavelength relationship for propagating ocean waves in that region. This measured-dispersion equation is related to the effective large-scale properties of the MIZ that occur in models for wave propagation and scattering. We present the measured wave speeds to enable estimation of the parameters in these models.

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References

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Dixon, T. W. and Squire, V A.. 2000a. Energy transport velocity of flexural waves in a random medium. Warns in Random Media, 10,83−102.
Dixon, T.W. and Squire, V. A.. 2000b. Multiple scattering in a marginal ice zone. In Pullan, A.J. and Ryan, D. M., eds. ANZIAM 2000, The 36th Applied Mathematics Conference, Copthorne Resort, Waitangi, Bay of Islands, New Zealand, 8−12 February. Auckland, Australian Mathematical Society, 44.
Meylan, M. 2000. Wave scattering in the marginal ice zone. In Pullan, A.J. and Ryan, D. M., eds. ANZIAM 2000, The 36th Applied Mathematics Conference, Copthorne Resort, Waitangi, Bay of Islands, New Zealand, 8−12 February. Auckland, Australian Mathematical Society, 43.
Meylan, M. and Fox, C.. 1996. A model for the propagation of waves through the MIZ from a single floe solution. In Chung, J. S., Sayed, M., Hobbs, R. E. and Yoerger, D. R., eds. Proceedings of the Sixth (1996) International Offshore and Polar Engineering Conference (ISOPE’96), 26−31 May 1996, Los Angeles, California. Vol. 3 Golden, CO, International Society of Offshore and Polar Engineers, 321−327.
Meylan, M., Squire, V. A. and Fox, C.. 1997. Towards realism in modelling ocean wave behavior in marginal ice zones. J. Geophys. Res., 102(C10), 22,981−22,991.
Welch, P. D. 1967 The use of fast Fourier transform for the estimation of power spectra: a method based on time averaging over short, modified periodograms. IEEE Trans. Audio Electroacoust., AU-15(2), 70−73.

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