Thickness and properties of sea ice and snow of land-fast sea ice in Atka Bay in 2013

Manual measurements of sea ice thickness, sub-ice platelet layer thickness, freeboard, and snow thickness are distributed evenly and repeated along a 25km-long transect across Atka Bay every 2 to 4 weeks. At each measurement location, 5 holes were drilled through the ice in order to determine the aforementioned parameters, one in the center and one in a distance of five meters in each direction, to cover their small-scale spatial variabilities. The measurements have been mainly conducted by the meteorologist (Lisa Behrens) and Julia Regnery, both of the overwintering team.科研人员沿跨阿特卡湾（Atka Bay）的25公里长调查断面，每2至4周均匀布设测点并重复开展海冰厚度、冰下血小板层（sub-ice platelet layer）厚度、冰面干舷（freeboard）及积雪厚度的人工测量。在每个测量点位，均钻取5个冰孔以测定上述参数：1个设于点位中心，其余4个分别沿四个方向间隔5米布设，以此覆盖其小尺度空间变异性。 本次测量主要由越冬科考队的气象学家莉萨·贝伦斯（Lisa Behrens）与朱莉娅·雷格纳里（Julia Regnery）完成。