EGU 2018

EGU 2018

 

Air-Se-ice Lab participated to the last The General Assembly 2018 of the European Geosciences Union (EGU) is held at the Austria Center Vienna (ACV) in Vienna with 3 posters. The conference included a total of 4,776 oral, 11,128 poster, and 1,419 PICO presentations with 15,075 scientists from 106 countries. It has been a great occasion to share the latest news in wave-ice interaction, wave forecasts and CFD modelling.

Drift of ice: an experimental model in a wave-ice flume

An experimental study was set up at the University of Melbourne to investigate continuous and broken ice motion due to waves. For short period waves the continuous ice cover remained unbroken and its motion only included heave oscillations. Increasing the period the continuous ice cover entirely broke up. Broken floes moved both vertically and horizontally.  Heave never vanished but dissipated towards the end of the flume.  Surge and drift are relevant only at the beginning and middle of the flume.

Drift of ice: an experimental model in a wave-ice flume

An experimental study was conducted at the University of Melbourne to investigate continuous ice cover breakup due to incident waves with varying amplitudes and periods. Wave attenuation due to the ice cover was also studied. Results showed that both wave attenuation and ice cover break-up depend on amplitude and period. Long waves break the ice cover entirely while short waves attenuates at the beginning of the ice cover.

Surface waves and currents in the Southern Ocean were measured remotely using the WaMoS II radar on the Russian icebreaker Akademik Tryoshnikov. Wind was gathered from the meteostation available on-board. Using WaMoS spectra as input, a nonlinear phase-resolving model based on the Higher Order Spectral Method (HOSM) was used to compute MonteCarlo simulations of the temporal evolution of the random ocean surface. Approximately 30% of them showed a substantial deviation from the exponential, highlighting a high probability of encountering rogue waves.

 

References

https://www.egu2018.eu/

 

Leave a comment

Your email address will not be published. Required fields are marked *