Sea ice thickness and snow depth measurements from sea ice mass balance buoy ZS2009@en

CRREL-type IMB ZS2009 is an autonomous instrument that was installed on the landfast sea ice in Prydz Bay, east Antarctica in July 2009. The buoy was deployed at 69.36°S; 76.42°E, ~3 km from the coast of Station Zhongshan with initial thicknesses of snow and ice of 0.01 and 1.00 m, respectively, on 10 July 2009. Snow/Ice temperature and mass balance were measured along a chain of thermistors and via acoustic rangefinder sounders. The thermistor chain was 4.5 m long and included 45 sensors with a regular spacing of 10cm. The acoustic sensors were located above and below the ice surface, monitoring the position of the top and bottom surfaces of the ice. The resulting time series describes the evolution of temperature and snow/ice mass balance as a function of time between 10 July and 12 December 2009 in sample intervals of 2 hours. The data from the underwater acoustic sounder were available only from 10 July to 2 August 2009 because of a sensor failure.CRREL型IMB ZS2009是一款自主观测仪器，于2009年7月部署在南极洲东部普里兹湾的固定海冰之上。该浮标于2009年7月10日布设于南纬69.36°、东经76.42°海域，距中山站海岸约3公里，初始雪厚与冰厚分别为0.01米与1.00米。浮标通过热敏电阻链与声学测距声呐获取雪/冰温度与质量平衡数据：热敏电阻链全长4.5米，共包含45个传感器，传感器间距规整为10厘米；声学传感器分别布置在冰面上下两侧，用于监测冰盖上下表面的位置变化。所得时间序列完整记录了2009年7月10日至12月12日期间，雪/冰温度与质量平衡随时间的演化过程，采样间隔为2小时。受传感器故障影响，水下声学声呐的有效观测数据仅覆盖2009年7月10日至8月2日时段。