Water movement in ice-covered lakes is known to be driven by wind, sediment heat flux, solar radiation, saline density flows, and advective stream discharge. In large ice-covered lakes, wind-induced oscillations have been found to play a major role in horizontal flows. Here, we report recurrent, wind-driven, barotropic seiches in a small lake with a thick (~4 m) permanent ice-cover. Between 2010 and 2016, we recorded 10.5- to 13-min oscillations of the hydrostatic water level in Lake Hoare, McMurdo Dry Valleys, East Antarctica, using pressure transducers moored to the lake bottom and suspended from the ice cover. Theoretical calculations showed a barotropic seiche should have a period of 12.6 min. Barotropic seiches were most frequent during high wind events (> 5 m s⁻¹) in winter months (February–November). The period increased during summer months (December–January) when fast ice thinned and melted along the shoreline.

中文翻译：

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南极洲东部一个常年冰雪覆盖的湖泊中的正压性海水

众所周知，冰雪覆盖的湖泊中的水运动是由风、沉积物热通量、太阳辐射、盐水密度流和平流流排放驱动的。在冰雪覆盖的大型湖泊中，风引起的振荡在水平流动中起主要作用。在这里，我们报告了一个小湖中反复出现的、风驱动的、正压性的、有厚厚的（~4 m）永久冰盖的湖。在 2010 年至 2016 年期间，我们使用系泊在湖底并悬挂在冰盖上的压力传感器记录了南极洲东部麦克默多干谷霍尔湖的静水水位 10.5 至 13 分钟的波动。理论计算表明，正压seiche 应该有12.6 分钟的周期。正压性风暴在强风事件中最为频繁（> 5 m s ^-1) 在冬季（2 月至 11 月）。在夏季（12 月至 1 月），当快冰沿海岸线变薄并融化时，这一时期有所增加。