The response of ice floes to ocean waves

摘要: A precise linear mathematical theory is reported to model the response of a solitary ice floe in ocean waves, allowing bend with passing wave. Both infinite and finite water depths are considered, also extended include pair separated floes different length, case n-floes then being natural straightforward development. For single floe, perfect transmission achieved whenever wavelength beneath couples perfectly length floe. Then strains induced bending reach maximum, because multiple-cycle tuning can occur which long compared wavelength, strain amplitude operators (RAOs) complicated. By considering stiffness, heave roll RAOs found for typical wave periods, these agree well two-dimensional rigid-body models. Finally, diameters but constant 1-m thickness subjected spectral forcing, density each found. Spectral envelopes increase gradually diameter, achieving maximum value about 102m. Thereafter never decrease below those 80-m curve owing tuning. This may explain presence zones within an field where size exceeds some prescribed value. Results obtained from complete two adjacent do not differ significantly by applying single-floe serially except when separation very small.