Iceberg Oscillations and Ocean Waves

Abstract
The frequencies of both linear and angular oscillations in a vertical plane of a floating iceberg are shown to converge as the horizontal dimensions become relatively larger. For icebergs of thickness of 250 m, the calculated period of about 30 s is supported by actual observations which have been reported. Because swell in the Southern Ocean may extend to such long periods, a critical relationship between iceberg dimensions and ocean wavelengths has been formulated. This relates the conditions under which the length and natural period of an iceberg may, respectively, coincide with the wavelength and wave period of the ocean.

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