0418号台风过境后近岸沉积物粒度特征参数的变化分析  

ANALYSIS ON THE VARYING PARAMETERS OF INSHORESEDIMENT GRANULARITY CHARACTERISTIC AFTER THE ATTACKING OF 0418 TYPHOON

作　　者：彭俊[1] 蔡锋[1] 雷刚[1] 

机构地区：[1]淮海工学院空间信息科学系

出　　处：《海洋湖沼通报》2008年第2期37-45,共9页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金项目(40676051);淮海工学院科研启动基金(kk06041)资助

摘　　要：0418号台风"艾利"过境后,对福建近岸沙质海滩表层沉积物粒度特征参数变化进行分析,结果表明:海滩沉积物受到扰动,沉积物以粗化为主,分选性减弱,负偏态程度增强,峰态多表现为窄峰态,双峰分布。沉积物平均粒径Ф值增大(沉积物变细)的区带,海滩主要表现为淤积状态;沉积物平均粒径Ф值减小(沉积物变粗)的区带,海滩主要表现为冲蚀状态。岬湾岸型海滩沉积物粒度特征参数变化最强烈,沙坝—泻湖岸型次之,夷直岸型最弱。After the attacking of 0418 typhoon, the variation of granularity characteristic parameters for the surface sediment on the inshore sandy beach of Fujian Province is closely analyzed. The results indicate that the beach sediment were stirred, the grain size of sediment are mainly getting coarse, and the sorting were weaken, with the negative skewness were heighten, and the narrow double-peak kurtosis were showed. The beaches are mainly in the situation of deposition in the section of sedimentary Mzφaccretion, and the beaches are mainly eroded in the section of sedimentary Mzφ minish. The variation of granularity characteristic parameters for sediment are most fiercely in the shore between Capes, the shore of bar-lagoon secondly, and the straightened shore weakly.

关 键 词：台风 沙质海滩 表层沉积物 粒度特征 

分 类 号：P737[天文地球—海洋地质]