In Situ Measurements of an Energetic Wave Event in the Arctic Marginal Ice Zone
作者： Clarence O. Collins , W. Erick Rogers , Aleksey Marchenko , Alexander V. Babanin
DOI: 10.1002/2015GL063063
关键词:
摘要: R/V Lance serendipitously encountered an energetic wave event around 77°N, 26°E on 2 May 2010. Onboard GPS records, interpreted as the surface signal, show largest waves recorded in Arctic region with ice cover. Comparing measurements a spectral model indicated three phases of interaction: (1) blocking by ice, (2) strong attenuation energy and fracturing forcing, (3) uninhibited propagation peak extension allowed to higher frequencies (above peak). Wave properties during cover increased groupiness. Wave-ice interaction presented binary behavior: there was zero transmission unbroken total fractured ice. The front traveled at some fraction group speed. Findings do not motivate new dissipation schemes for models, though they indicate need two-way, wave-ice coupling.
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