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基于遥感反演的海阳海域悬浮泥沙时空分布特征研究<sub>*</sub>
王强, 黄海军, 张泽华, 严立文, 刘艳霞, 毕海波
中国科学院海洋研究所
摘要:
海阳市海阳港和海阳核电站的建设对邻近海域悬浮泥沙的分布会产生一定的影响。本文选用2004-2017年不同时期的Landsat ETM+/OLI影像,利用2014年海阳核电站附近实测数据建立该区域表层悬浮泥沙浓度的多组反演模型,对比分析悬浮泥沙的时空分布特点。结果表明,研究区内悬浮泥沙浓度冬季高于夏季,其分布受受河流输沙和海洋动力条件的双重影响,丁字河口为悬浮泥沙的重要供应来源。研究区内高浓度悬浮泥沙占比在海岸工程施工时期显著升高。在长时间跨度范围内,遥感技术反演海阳市邻近海域悬浮泥沙浓度可以反应出海区的环境变化和人类海岸工程活动的影响,较好的揭示了环境的变迁。
关键词:  海阳  遥感反演  悬浮泥沙分布  海岸工程
DOI:10.11759/hykx20180821003
分类号:TP 79
基金项目:国家自然科学基金委员会-山东省人民政府海洋科学研究中心联合资助项目(U1606401);国家自然科学基金青年基金(41706092);中国科学院海洋地质与环境重点实验室开放基金项目(MGE2018KG09)
Spatial and temporal distribution of suspended sediment in sea area around Haiyang by remote sensing
wangqiang, Huanghaijun, zhangzehua, yanliwen, liuyanxia, bihaibo
Institute of oceanology,Chinese academy of sciences
Abstract:
The construction of Haiyang Harbor and Haiyang Nuclear Power Station have had a certain impact on the distribution of suspended sediment in the adjacent waters. In this paper, multiple inversion models of surface suspended sediment concentration was built by the measured data near Haiyang nuclear power plant in 2014. Several sets of Landsat ETM+/OLI images during 2004-2017 were chosen to compare and analyze the spatial and temporal distribution pattern of suspended sediment based on these inversion models. The results show that the concentration of suspended sediment in the study area is higher in winter than in summer. Its distribution was affected by both river sediment transport and marine dynamic conditions. The Dingzi-estuary is an important source of suspended sediment supply. The interannual variation of suspended sediment concentration is in good agreement with the project construction timeline in the study area. In the long-term span, remote sensing technology inversion of suspended sediment concentration can reflect the environmental changes in the sea area and the impact of human engineering activities on the coast, which can better reveal the changes of the environment.
Key words:  Haiyang  remote sensing inversion  suspended sediment distribution  coastal engineering
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