Laboratory Investigations of the Bending Rheology of Floating Saline Ice and Physical Mechanisms of Wave Damping in the HSVA Hamburg Ship Model Basin Ice Tank

An experimental investigation of flexural-gravity waves was performed in the Hamburg Ship Model Basin HSVA ice tank. Physical characteristics water-ice system were measured several locations tank with a few sensors deployed water and on during tests. The three-dimensional motion optical Qualisys; pressure by mounted wall, in-plane deformations temperatures fiber optic sensors; acoustic emissions recorded compressional crystal sensors. setup selected results tests are discussed this paper. Viscous-elastic model (Burgers material) is adopted to describe dispersion attenuation propagating below ice. elastic modulus coefficient viscosity calculated using data. measurements demonstrated dependence wave from variability properties experiment caused brine drainage. We showed that cyclic along tank, imitating drift, generation under turbulence cause an increase damping. Recorded microcracking occurring frequencies accompanying bending This explains viscous anelastic rheology