2016-2017年北极内尔斯海峡北部海冰运动及其影响因素研究  

Study on the sea ice motion and its influence factors in the northern Nares Strait,Arctic in 2016-2017

作　　者：王子涵 刘婷婷[1] 许苏清 王苗姜 Wang Zihan;Liu Tingting;Xu Suqing;Wang Miaojiang(Chinese Antarctic Center of Surveying and Mapping,Wuhan University,Wuhan 430079,China;Key Laboratory of Global Change and Marine-Atmospheric Chemistry,Ministry of Natural Resources,Xiamen 361005,China)

机构地区：[1]武汉大学中国南极测绘研究中心,湖北武汉430079 [2]自然资源部海洋大气化学与全球变化重点实验室,福建厦门361005

出　　处：《海洋学报》2021年第7期194-204,共11页

基　　金：国家重点研发计划(2016YFC1400303,2018YFC1406102);自然资源部极地科学重点实验室开放基金(KP202004)。

摘　　要：内尔斯海峡位于加拿大埃尔斯米尔岛与格陵兰岛之间,是北极海冰输出的重要通道之一,这些海冰融化后带来的表层淡水对巴芬湾、拉布拉多海的深层水形成具有重要影响。但由于该海峡较为狭窄,缺乏对此区域海冰运动情况的精细研究。本研究利用每日的哨兵1号影像提取了2016年9月至2017年8月的内尔斯海峡北部区域海冰运动信息,展示了海峡中浮冰的运动过程,并结合风速、海流速度等数据分析浮冰运动特征及影响因素。结果表明风和海流二者共同主导了海冰的运动过程,相关系数分别达到了0.767和0.709,由风速、海流速度、海冰密集度3个自变量与浮冰速度建立的多元线性回归模型复决定系数也达到了0.727。进一步分析发现,风和海流在速度相对稳定时对浮冰速度的影响都会减小。本研究关于风和海流等要素对海冰运动过程影响的研究结果,可以为海洋–大气动力学模型的研究提供参考。The Nares Strait,located between Ellesmere Island,Canada and Greenland,is one of the important channels for the export of Arctic sea ice.The surface fresh water brought by the melting of these sea ice has a vital impact on the formation of deep water in the Baffin Bay and the Labrador Sea.However,due to its relatively narrow structure,there is no detailed study on the sea ice motion in this area.In this study,the daily Sentinel-1 images were used to extract the information of sea ice motion in the northern region of Nares Strait from September 2016 to August 2017,to show the motion process of ice floes in the strait,and to analyze the characteristics and influencing factors of ice floe motion combined with wind speed,current speed and other data.The results show that wind and current jointly dominate the motion of sea ice,with the correlation coefficients are 0.767 and 0.709,respectively.The multiple linear regression model established by wind speed,current speed and sea ice concentration with ice speed also has the complex determination coefficient reaching 0.727.Further analysis shows that both wind and sea current have relatively less influence on sea ice speed when their speed is relatively stable.The results of this study on the influence of wind and ocean currents on the process of sea ice motion can provide references for the study of ocean-atmospheric dynamics models.

关 键 词：内尔斯海峡 海冰运动 哨兵1号 风 海流 

分 类 号：P731.15[天文地球—海洋科学]