Creating a 47-Year Public Record of Sea-Ice Draft in the Arctic Ocean

自1958年以来，美国潜艇一直在北冰洋作业，测量海面以下海冰穿透深度(冰吃水)。这些北极记录将从美国海军获得，转录和分析，并记录在公共记录中。这些数据将被用来研究北极盆地冰层厚度的区域和季节变化。人们的预期是，在过去的几十年里，冰层变得越来越薄。将与其他科学家合作，利用更新的数据和来自其他国家的数据来研究长期趋势。

Measurements of the sea-ice penetration depth below the sea surface (ice draft) have been made by U.S. submarines operating in the Arctic Ocean since 1958. These Arctic records will be obtained from the U.S. Navy, transcribed and analyzed, and placed in the public record. The data will be used to examine regional and seasonal changes in the ice thickness over the Arctic basin. Expectations are that the ice pack has become thinner over the last several decades. Long-term trends will be examined in collaboration with other scientists with more recent data and with data from other countries.