McMurdo Dry Valleys Ice Thickness for Taylor Valley Lakes, Antarctica

Ice thickness was measured from the bottom of the ice cover to the piezometric water level and to the top of the ice cover. Because most limnological sampling holes are drilled in low-lying areas, it was thought that ice thickness measurements were biased. Therefore, random ice thickness measurements were performed in a 1000 m^2 sampling grid on each lake in past years. Statistical analyses by Dr. Priscu have shown that measurements from three ice holes are representative of the ice thickness measured by this grid system.

冰厚测量以冰盖底部为基准，分别量测至测压水位与冰盖顶部的距离。由于多数湖沼学采样孔均钻设于低洼区域，此前认为冰厚测量结果存在系统性偏差。因此，过往研究中针对每处湖泊，均在1000平方米的采样网格内开展随机冰厚测量。普里苏（Priscu）博士开展的统计分析表明，仅通过3个冰孔获取的冰厚测量结果，即可代表该网格系统所测得的冰厚整体水平。