After visual analysis of more than 3000 satellite images for 2013–2020, it was found that the presence of recurring (stationary or stable) polynyas in coastal lagoons in the Northern Hemisphere of the boreal and polar climate zones of the Atlantic, Pacific and Arctic Oceans was quite common. At least 115 out of 246 lagoon-type coastal objects demonstrated this (47%). Polynyas were primitively classified into two types: the flowing polynya (due to a river inflow in a lagoon), and the inlet polynya (with three subtypes: the inward, outward and «window» ones) attached to the lagoon inlet. The geographical distribution of the lagoons with polynyas was discussed. Some comments on different mechanisms (thermal and mechanical) that guided the polynyas’ appearance in the lagoons were presented. It was noted that statistical distributions of the number of the polynyas by polynya areas or relative size of polynya areas (ration of polynya areas to lagoon areas) could be expressed by lognormal distribution function.

中文翻译：

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北半球沿海泻湖中反复出现的冰间湖

对 2013 年至 2020 年 3000 多张卫星图像进行目视分析后发现，北半球大西洋、太平洋和北冰洋的寒带和极地气候区的沿海泻湖中存在重复出现的（静止或稳定）冰间湖很常见。246 个泻湖型沿海物体中至少有 115 个证明了这一点（47%）。冰间湖最初被分为两种类型：流动冰间湖（由于河流流入泻湖）和附属于泻湖入口的入口冰间湖（具有三种亚型：向内、向外和“窗口”冰间湖）。讨论了冰间湖泻湖的地理分布。对指导泻湖中冰间湖出现的不同机制（热力和机械）提出了一些评论。据指出，冰间湖数量按冰间湖面积或冰间湖面积相对大小（冰间湖面积与泻湖面积之比）的统计分布可以用对数正态分布函数来表示。