河北近海海域海冰时空变化遥感监测分析  

Analysis of spatiotemporal variation of sea ice in Hebei offshore waters by satellite remote sensing monitoring

作　　者：徐雯佳[1,2] 徐永利 田力 XU Wen-jia;XU Yong-li;TIAN Li(Remote Sensing Center of HeBei Province,Shijiazhuang 050021,China;Hebei Prospecting Institute of Hydrogeology and Engineering Geological,Shijiazhuang 050021,China;Institute of Geological Survey of Hebei Province,Shijiazhuang 050081,China)

机构地区：[1]河北省遥感中心,河北石家庄050021 [2]河北省水文工程地质勘查院,河北石家庄050021 [3]河北省地质调查院,河北石家庄050081

出　　处：《海洋环境科学》2020年第2期277-282,共6页Marine Environmental Science

基　　金：河北省海洋局基础类项目(454-0503-YBN-532M)。

摘　　要：河北近海海域每年冬季都会出现不同程度的海水冻结现象,实时连续监测海冰变化对制定有效的防灾减灾措施具有重要意义。利用MODIS、环境一号、高分一号、高分四号等多源卫星遥感数据,提取了2010—2018年8个冬季的河北近海海域海冰信息。以冰期、盛冰期、海冰最大面积、海冰最大外缘线和海冰最大叠加频次作为统计指标,分析了海冰时空变化特征。结果表明,河北近海海域海冰通常始于12月中下旬,终于次年2月下旬,冰期一般为50~60 d,盛冰期多数出现在1月下旬至2月上旬。在一般冰年,海冰多初现于唐山附近海域,消融于沧州附近海域。2010—2018年,前3个年度海冰冰情相对稳定,均相对较重;而近5个年度冰情变化相对剧烈,冰情较轻与较重的年度大体呈间隔式出现。监测期海冰冰情整体呈下降的变化趋势。Sea ice occurs in offshore waters of Hebei province at different degrees every winter.Real-time continuous monitoring of sea ice changes is of great significance for the formulation of effective measures for disaster prevention and mitigation.The sea ice information in offshore waters of Hebei province of 8 winters from 2010 to 2018 was extracted by using multi-source satellite remote sensing data such as MODIS,HJ-1,GF-1 and GF-4.The spatial and temporal variation characteristics of sea ice were analyzed by taking ice period,severe ice period,maximum ice area,maximum floe ice edge and maximum superposition frequency as statistical indexes.The results showed that the sea ice in offshore waters of Hebei province usually started in mid or late of December,and finally ended in late of February of the following year.The ice period was generally 50~60 days,and severe ice period occurred in late January to early February.In the general ice year,the sea ice usually first appeared in offshore waters of Tangshan and finally ablated in offshore waters of Cangzhou.From 2010 to 2018,the sea ice conditions in the first 3 years were relatively stable and relatively serious.In the last 5 years,the ice conditions changed relatively sharply,with relative light ice year and relative severe ice year almost interval appeared.On the whole,the severity of sea ice conditions showed a downward trend in the monitoring period.

关 键 词：卫星遥感 海冰 河北近海海域 

分 类 号：P731.15[天文地球—海洋科学] X87[环境科学与工程—环境工程]