SEA ICE THICKNESS DISTRIBUTION IN THE ARCTIC-OCEAN
SEA ICE THICKNESS DISTRIBUTION IN THE ARCTIC-OCEAN
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DOI：
10.1016/0165-232x(87)90007-3
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发表时间：
1987-04-01
影响因子：
4.1
通讯作者：
GARRETT, RP
中科院分区：
文献类型：
--
作者：
BOURKE, RH;GARRETT, RP
对未分类文献中的数据进行了审查，以确定海冰厚度的区域和季节分布、压力脊统计数据、多年生现象的出现频率以及龙骨/帆高比。构建了这些属性的季节和区域地图和直方图。大部分数据来自配备窄波束俯视声纳的潜艇。根据对17次潜艇巡航的分析，65°N以上的北极海冰(包括变形冰和未变形冰)的总体平均厚度为2.9米，标准差为1.8米。总体季节性平均厚度从春季的2.4米到夏季的3.3米不等。当地平均冰川吃水范围从靠近边缘冰区不到1米到加拿大群岛以北超过7米。海冰吃水的直方图反映了冬季和春季的双峰分布，这是第一年冰薄的影响。由于夏季和秋季的冰层融化，只观察到一种更厚的多年冰的单一模式。
Data from the unclassified literature were reviewed to determine the regional and seasonal distributions of sea ice thickness, pressure ridging statistics, frequency of occurrence of polynyas, and keel/sail height ratios. Seasonal and regional maps and histograms of these properties were constructed. The majority of the data were obtained from submarines equipped with a narrow-beam, upward-looking sonar.As determined from an analysis of 17 submarine cruises, the overall mean thickness of Arctic sea ice above 65° N, including both deformed and undeformed ice, is 2.9 m with a standard deviation of 1.8 m. The overall seasonal mean ranges from approximately 2.4 m in spring to 3.3 m in summer. Local mean ice drafts ranged from less than 1 m near the marginal ice zone to greater than 7 m to the north of the Canadian Archipelago. Histograms of sea ice draft reflect a bimodal distribution in winter and spring, an effect of the presence of thin first year ice. Due to ice melt in summer and autumn only a single mode of much thicker multiyear ice is observed.