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基于Sentinel-1卫星数据的北极西北航道通航适宜性分析
周雪飞1(), 徐嘉2, 张绪冰1()
Navigable suitability analysis of the Arctic Northwest Passage based on Sentinel-1 satellite data
Xuefei ZHOU1(), Jia XU2, Xubing ZHANG1()

图12. 2015—2019年每年9月西北航道累计不可通航次数

Fig. 12. Accumulated number of non-navigable times of the Northwest Passage in September from 2015 to 2019