黄河三角洲北部近岸悬浮物季节性分布及驱动因素  

Seasonal distribution and driving forces of suspended particulate matter in the northern Yellow River Delta

作　　者：林聪泳 陈沈良[1] 李鹏[1] 姬泓宇 凡姚申 禹定峰[3] Lin Congyong;Chen Shenliang;Li Peng;Ji Hongyu;Fan Yaoshen;Yu Dingfeng(State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China;Institute of Yellow River Water Conservancy,Yellow River Water Conservancy Commission,Zhengzhou 450003,China;Institute of Oceanographic Instrumentation,Shandong Academy of Sciences,Qingdao 266061,China)

机构地区：[1]华东师范大学河口海岸学国家重点实验室,上海200241 [2]黄河水利委员会黄河水利科学研究院,河南郑州450003 [3]山东省科学院海洋仪器仪表研究所,山东青岛266061

出　　处：《海洋学报》2021年第12期152-160,共9页

基　　金：国家自然科学基金(U1706214);国家重点研发计划(2017YFC0405503);河口海岸学国家重点实验室开放课题(SKLECKF202001)。

摘　　要：近岸海域悬浮颗粒物的分布与扩散对水体生态环境、海岸地貌演变、水产养殖以及海岸工程等有重要影响。由于刁口河流路的改道,黄河三角洲北部成为强烈侵蚀岸段,揭示该区域的悬浮物浓度变化特征和规律是防护工程安全维护的基础。利用经良好检验的模型反演近岸海域悬浮物浓度,Landsat-8和Sentinel-2卫星影像反演结果的交叉验证表明,基于两种传感器反演的悬浮物浓度具有较强的一致性,两种卫星数据可以结合使用。研究区近岸海域悬浮物浓度季节变化明显,冬季和春季悬浮物浓度较高,夏季较低,秋季是悬浮物浓度从低向高转换的季节。冬、春季该区域风浪较大,在波浪掀沙和潮流输沙的联合作用下,底床泥沙强烈再悬浮,是形成悬浮物的主要来源,丁坝群的修建也在一定程度上改变了悬浮物的时空分布。The distribution and diffusion of suspended particulate matter(SPM)in coastal waters play an important role on ecological environment,coastal geomorphic evolution,aquaculture and coastal engineering.The northern Yellow River Delta is a strong coastal erosion area due to the diversion of Diaokou course.Revealing the variation characteristics and laws of SPM concentration in this area is the basis for maintaining the safety of protection projects.Using the well-validated model to retrieve the SPM concentration in the coastal waters,the cross validation results of Landsat-8 and Sentinel-2 satellite sensors show that the SPM concentrations retrieved by the two sensors have strong consistency,and the two kinds of satellite data can be used together.The seasonal variation of SPM concentration in the study area is obvious.The concentration of SPM is higher in spring and winter,and lower in summer.Autumn is the season when SPM concentration changes from low to high.In winter and spring,the wind and waves are large in this area.Under the combined action of waves and current,strong sediment resuspension occurs,which is the main source of SPM.The construction of spur dike group altered the spatial and temporal distribution of SPM to a certain extent.

关 键 词：黄河三角洲强侵蚀岸段 悬浮物浓度 遥感反演 季节性分布 驱动因素 

分 类 号：X87[环境科学与工程—环境工程] P734.23[天文地球—海洋化学]