基于Landsat-8卫星数据的洋山深水港区近年悬沙变化特征研究  

Recent characteristics of suspended sediment in Yangshan Deep-water Harbor based on Landsat-8 satellite data

作　　者：侯仲荃 陈语 袁文昊 陈嘉民 HOU Zhongquan;CHEN Yu;YUAN Wenhao;CHEN Jiamin(CCCC Shanghai Waterway Survey and Design Research Institute Co.,Ltd.,Shanghai 200120,China;State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120 [2]华东师范大学,河口海岸学国家重点实验室,上海200241

出　　处：《水运工程》2024年第9期27-33,40,共8页Port & Waterway Engineering

摘　　要：洋山深水港区的建设对周围海域水沙分布产生显著影响,深入分析建港后的水沙特征对后期港区开发具有重要意义。基于近6年的Landsat-8 OLI洋山深水港区遥感影像,对洋山深水港区的表层悬沙浓度时空变化特征进行分析。结果表明:洋山港海域冬季悬沙浓度明显大于夏季,冬、夏季悬沙浓度差异接近1倍;大潮期的悬沙浓度大于小潮期,涨潮期的悬沙浓度大于落潮期;受喇叭口地形影响,潮流作用较强,潮型变化对口外悬沙浓度影响更为明显;强风引起的波浪变化也会使悬沙浓度明显提高。The construction of Yangshan Deep-water Harbor area has a significant impact on the distribution of water and sediment in the surrounding waters,and an in-depth analysis of water and sediment characteristics after the construction of the port is of great significance to the later development of the port area.Based on the Landsat-8 OLI remote sensing image of Yangshan Deep-water Harbor in recent 6 years,we analzye spatial-temporal variation characteristics of surface suspended sediment concentration in Yangshan Deep-water Harbor.The results show that the suspended sediment concentration of waters in Yangshan Deep-water Harbor in winter is obviously higher than that in summer,and the difference between the suspended sediment concentration in winter and summer is nearly once.The suspended sediment concentration in the spring tide is higher than that in the neap tide,and the suspended sediment concentration in the high tide is higher than that in the low tide.Under the influence of the trumpet topography,the tidal current is strong,and the tidal pattern has a more obvious influence on the suspended sediment concentration.

关 键 词：Landsat-8 OLI 洋山深水港区 悬沙浓度 

分 类 号：U652.3[交通运输工程—港口、海岸及近海工程] TV143[交通运输工程—船舶与海洋工程]