Time-Space Coherence of Sea Ice Draft Distribution

这项研究将把一个新开发的仪器放在海军研究办公室资助的海洋系泊上，以测量楚科奇大陆架上北冰洋的海冰吃水，作为确定海冰厚度的一种方法。将在一个地点获得一年期间海冰吃水分布的时序测量结果。这些数据将与在大约100公里外的第二个地点测量的类似时间序列一起进行分析，以确定海冰吃水和冰吃水分布的时空一致性。北冰洋准永久海冰覆盖是北极高纬度气候系统的核心组成部分，海冰浓度和厚度的长期变化可以作为北极大范围气候变化的重要替代指标。

This is research will place a newly developed instrument on an Office of Naval Research sponsored marine mooring to measure sea- ice draft, as a method of determining sea-ice thickness, in the Arctic Ocean over the Chukchi Continental Shelf. Time-series measurements will be obtained on sea-ice draft distribution over a one-year period at a single location. These data will be analyzed together with a similar time series measured at a second location approximately 100 km away, to determine the spatial and temporal coherence of sea-ice draft and the ice-draft distribution. The quasi-permanent sea-ice cover of the Arctic Ocean is a central component of the northern high latitude climate system, and secular changes in the concentration and thickness of the sea ice can be important proxy indicators of wide-spread arctic climate variations.