海洋科学2017，Vol.41Issue(10)：86-93,8.DOI:10.11759/hykx20170301001
夏季北黄海不同性质悬浮体分布特征及其控制因素分析
Distribution and its control factors of the suspended particulate matter in the North Yellow Sea during summer
摘要
Abstract
To better understand the distribution of different kinds of suspended particulate matter (SPM) in the North Yellow Sea and the key factors controlling them,in June and July 2016,we measured the SPM volume concentrations and sizes with an in-situ laser particle sizer,LISST-100X(C).We obtained the chlorophyll fluorescence concentration,turbidity,and temperature of the entire water column with a CTD device.The results indicate that coarse particles (＞128 μm) of predominately biogenic matter account for most of the SPM,with the concentrations substantially higher in the thermocline of the stratificated offshore water.The concentration distributions of fine particles (＜128 μm) exhibits the same tendency as turbidity,and accordingly,verify the mainly inorganic terrigenous particles of the area.Generally,the concentrations are high along the Shandong Peninsula coast and lowin the offshore deep water where there is a concentration front along the coast.The concentrations are low in the upper water and high in the water below.The highest concentration is at the bottom near the Chengshantou area.Tidal mixing and the thermocline are key factors controlling the SPM distribution in the study area.Tidal mixing prompts shelf thermal fronts,which prevent coastal fine particles from spreading seaward.The strong tidal mixing near the Chengshantou area results in a resuspension of the local sediments,so the fine-particle concentration here is highest.The thermocline not only impedes the upward spreading of fine particles,but also delays the settling of particles from the upper water.Moreover,phytoplanktons gathered near the thermocline also have a significant promoter effect on the formation of high coarse-particle concentrations.关键词
悬浮体/粒径/北黄海/潮混合/温跃层Key words
suspended particulate matter (SPM)/particle size/the North Yellow Sea/tidal mixing/thermocline分类
海洋科学引用本文复制引用
张凯南,王珍岩,李文建,刘长华,阎军..夏季北黄海不同性质悬浮体分布特征及其控制因素分析[J].海洋科学,2017,41(10):86-93,8.基金项目
国家自然科学基金项目(41476045) （41476045）
中国科学院战略性先导科技专项项目(A类)(XDA11030103)National Natural Science Foundation of China,No.41476045 （A类）
Strategic Priority Research Program of the Chinese Academy of Sciences,XDA11030103 （）
