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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3. 海水和海冰类型

Fig. 3. Sea water and sea ice types: thick ice (a), thin ice (b), melt pond (c), smooth sea (d) and rough sea (e)