%0 Journal Article
%T The grain-size characteristics and their environmental indications of the island intertidal surface sediments of Zhanjiang offshore area<br>湛江海区海岛潮间带表层沉积物特征及对沉积环境的指示
%A 李 涛
%A 李团结
%A 陈 亮
%A 周 英
%A 欧阳秀珍
%J 海洋科学
%D 2012
%I 
%X In order to elucidate the hydrodynamic force from grain-size data of intertidal zone sediment and the corresponding relationship between sediment grain-size and hydrodynamic transport modes,136 sediment grain-size samples that collected from 29 islands of Zhanjiang offshore area were analyzed.Several research tools,including C-M graph,grain-size cumulative curves and factor analysis,were introduced to analyze the grain-size data.The clustering analysis indicates that the content of fine fractions is stable;in comparison,that of coarse fractions is unstable.The fine fractions are deposited on the condition of weak hydrodynamics and the coarse correspondences are generated by sea-water disturbance.Two transport ways,suspension and saltation,are recognized through C-M graph and grain-size cumulative curves.The same conclusions are obtained from three analysis of C-M graph,grain-size cumulative curves and factor analysis.Three principal transport modes,suspension,displacive precipitation and saltation,affect intertidal sediment deposit,are corresponding to,respectively,the grain-size range of 5φ to larger than 11φ,of –1φ to 1φ and of 2φ to 4φ.Therefore,intertidal sediment grain size can be applied soundly to discuss the hydrodynamic environment.
%K Zhanjiang offshore area
%K intertidal zone
%K surface sediment
%K grain-size
%K sedimentary environment<br>湛江海区
%K 潮间带
%K 表层沉积物
%K 粒度
%K 沉积环境
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=DFE7B94EB76B8F26135C9890832CEF6A&aid=0088D482C124D0E8FA041785DD08D45B&yid=99E9153A83D4CB11&vid=933658645952ED9F&iid=E158A972A605785F&sid=A63576421B012172&eid=2B5DE8A23DCEED39&journal_id=1000-3096&journal_name=海洋科学&referenced_num=0&reference_num=0