Alberello Alberto, Bennetts Luke G, Onorato Miguel, Vichi Marcello, MacHutchon Keith, Eayrs Clare, Ntamba Butteur Ntamba, Benetazzo Alvise, Bergamasco Filippo, Nelli Filippo, Pattani Rohinee, Clarke Hans, Tersigni Ippolita, Toffoli Alessandro
University of Adelaide, 5005, Adelaide, SA, Australia.
The University of Melbourne, 3010, Parkville, VIC, Australia.
Nat Commun. 2022 Aug 6;13(1):4590. doi: 10.1038/s41467-022-32036-2.
The marginal ice zone is the dynamic interface between the open ocean and consolidated inner pack ice. Surface gravity waves regulate marginal ice zone extent and properties, and, hence, atmosphere-ocean fluxes and ice advance/retreat. Over the past decade, seminal experimental campaigns have generated much needed measurements of wave evolution in the marginal ice zone, which, notwithstanding the prominent knowledge gaps that remain, are underpinning major advances in understanding the region's role in the climate system. Here, we report three-dimensional imaging of waves from a moving vessel and simultaneous imaging of floe sizes, with the potential to enhance the marginal ice zone database substantially. The images give the direction-frequency wave spectrum, which we combine with concurrent measurements of wind speeds and reanalysis products to reveal the complex multi-component wind-plus-swell nature of a cyclone-driven wave field, and quantify evolution of large-amplitude waves in sea ice.
边缘冰区是开阔海洋与固结内冰原之间的动态界面。表面重力波调节着边缘冰区的范围和特性，进而影响大气 - 海洋通量以及冰的进退。在过去十年中，开创性的实验活动产生了边缘冰区波演变急需的测量数据，尽管仍存在显著的知识空白，但这些数据为理解该区域在气候系统中的作用取得重大进展奠定了基础。在此，我们报告了从移动船只获取的波浪三维成像以及浮冰大小的同步成像，这有可能大幅增强边缘冰区数据库。这些图像给出了方向 - 频率波谱，我们将其与风速的同步测量以及再分析产品相结合，以揭示气旋驱动波场复杂的多分量风加涌浪特性，并量化海冰中大幅波的演变。
