海洋地质与第四纪地质2013，Vol.33Issue(3)：47-56,10.DOI:10.3724/SP.J.1140.2013.03047
长江口典型断面悬浮体颗粒类型与粒级构成及其影响因素
TYPES AND SIZE OF SUSPENDED PARTICLES IN A TYPICAL CROSS SECTION AT THE CHANGJIANG ESTUARY AND INFLUENCE FACTORS
摘要
Abstract
During the NSFC cruise in October 2010,several water samples were recovered along a typical section at the Changjiang Estuary and its adjacent area for study of suspended matters.After filtration,the materials remained were examined under Electronic Microscope and by Energy Spectrometer.Grain size analysis was carried out for the samples.In this typical section,there are four types of particles,mineral debris,bioclasts,organic particles and floc-particles.The contents of mineral debris and organic particles are higher inshore and lower offshore,whereas the bio-particles are distributed in an opposite pattern.However,floc-particles have no obvious change from DH1 to DH6.There is a good linear relationship between floc-particles and organic particles,but a negative relationship between mineral debris and bioclasts.In the suspended matters,the particles smaller than 10 microns in size account for 70％,and those smaller than 20 microns account for 90％,while the average particle size is decreasing offshore.It is believed that the types of particles are mainly controlled by the factors of continental input,biological process,flocculation and resuspension,depending upon the movement of water masses.关键词
悬浮体/颗粒类型/粒径/影响因素/长江口Key words
suspended matters/ particulate size/ particulate microscopic types/ influencing factor/ the Changjiang estuary分类
海洋科学引用本文复制引用
邵和宾,范德江,麦晓磊,张晶,李清..长江口典型断面悬浮体颗粒类型与粒级构成及其影响因素[J].海洋地质与第四纪地质,2013,33(3):47-56,10.基金项目
国家自然科学基金项目(40976020,41030856) （40976020,41030856）
国家重大基础研究发展规划项目(2010CB951202) （2010CB951202）
