摘要
随着全球气候变暖,北极海冰覆盖范围的日趋减小使得北极航道的夏季通航性不断提高。与通过苏伊士运河的传统航线相比,北极东北航道可以节省欧洲和亚洲之间近三分之一的航行距离。然而,北极海冰不可避免地为北极航运带来极大的挑战。为此,在2018年夏季窗口期期间在中远“天佑号”东北航道航行过程中对航线冰情开展了走航观测。通过船载摄像机对航道中的海冰视频图像进行采集,并通过图像处理软件对海冰密集度进行提取。数据显示,窗口航道中海冰类型主要为低密集度的碎冰且部分碎冰内部夹杂着冰脊,其中平均密集度为17.8%,而最高值可达80%。此外,将视频数据与遥感数据进行对比分析,结果表明卫星遥感数据在低密集度(0-0.2)时存在一定的低估,而在较高密集度下则偏向高估。
With the globe warmed,the reduction of ice cover in the Arctic continually increases the navigability of the Arctic route in the window period.Compared with the traditional route through the Suez Canal,the Northeast Route can save one third of the distance between Europe and Asia.However,the existence of sea ice brings significant challenges to the navigation safety.In the summer of 2018,the ice conditions were observed and recorded by a video camera system installed on MV Tianyou during the Arctic cruise.And the ice concentration was obtained from the images.It is shown that the sea ices consist of broken ices and a few ice ridges as well as melting pools.The overall concentration is 17.8%in average with a maximum value of 80%.Furthermore,analysis of the difference between the data from the video camera and satellite images shows that the ice concentration from the satellite is underestimated when the concentration is below 20%and is overestimated at high concentrations.
作者
胡冰
于淼
李志远
王德禹
陈晓东
HU Bing;YU Miao;LI Zhi-yuan;WANG De-yu;CHEN Xiao-dong(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;China COSCO Shipping Co.,Ltd.,Shanghai 200127,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China)
出处
《船舶力学》
EI
CSCD
北大核心
2021年第8期1001-1009,共9页
Journal of Ship Mechanics
基金
国家重点研发计划项目(2017YFE0111400)。
关键词
极地航行
北极东北航道
走航观测
卫星遥感
海冰
Arctic navigation
Arctic Northeast Route
onboard measurement
satellite remote sensing
sea ice
