Quantifying the rate of wave attenuation in sea ice is key to understanding trends in the Antarctic marginal ice zone extent. However, a paucity of observations of waves in sea ice limits progress on this front. We deployed 14 waves-in-ice observation systems (WIIOS) on Antarctic sea ice during the Polynyas, Ice Production, and seasonal Evolution in the Ross Sea expedition (PIPERS) in 2017. The WIIOS provide in situ measurement of surface wave characteristics. Two experiments were conducted, one while the ship was inbound and one outbound. The sea ice throughout the experiments generally consisted of pancake and young ice <0.5 m thick. The WIIOS survived a minimum of 4 d and a maximum of 6 weeks. Several large-wave events were captured, with the largest recorded significant wave height over 9 m. We find that the total wave energy measured by the WIIOS generally decays exponentially in the ice and the rate of decay depends on ice concentration.

中文翻译：

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PIPERS活动期间南极海冰指数波衰减的观测

量化海冰中的波浪衰减率是了解南极边缘冰区范围趋势的关键。然而，缺乏对海冰波浪的观测限制了这方面的进展。在 2017 年罗斯海探险 (PIPERS) 的波利尼亚斯、冰生产和季节性演变期间，我们在南极海冰上部署了 14 个冰中波浪观测系统 (WIIOS)。WIIOS 提供表面波特征的原位测量。进行了两项实验，一项是在船舶进港时，一项是出港时。整个实验中的海冰通常由薄饼和 <0.5 m 厚的年轻冰组成。WIIOS 至少存活了 4 天，最长存活了 6 周。捕获了几个大波事件，记录的最大有效波高超过 9 m。