摘要
2007年7月,对台湾浅滩43个站位进行了表层底质采样,在室内用Mastersizer 2000型激光粒度仪获得了沉积物的粒径分布,并用矩法计算其粒径参数.研究区内沉积物类型多为砂和含砾砂,平均粒径集中于0Φ到3Φ之间.福建—广东沿岸海域一带沉积略细,沿岸带外侧的浅槽,以及台湾浅滩东北边坡与南边坡沉积略粗.用粒径趋势分析计算结果显示,台湾浅滩东北方向与偏西方向的沉积物均向浅滩核部汇聚;而浅滩核心区的粒度参数比较接近,沉积物输运趋势弱化.
Particle size distribution and size parameters of 43 surface sediment samples collected in July 2007 from the Taiwan Bank were obtained using a Mastersizer 2000 laser particle analyzer and the moment method.The results showed that the sediments in the study area were mainly sand and slightly gravelly sand with mean sizes that mainly vary between 0Φ and 3Φ.Fine sediments were observed along the Fujian-Guangdong coast.However,coarse sediments were observed in the shallow groove outside the coastal zone and the Taiwan Bank＇s northeast slope and southern slope.The results calculated by grain-size trend analysis showed that sediments on both the north-east and western portion of the bank converged toward the central part of the bank.However,in the central part of the bank,the parameters of the grain-size are similar,so the trend of transport is insignificant.
出处
《台湾海峡》
CAS
CSCD
北大核心
2011年第1期122-127,共6页
Journal of Oceanography In Taiwan Strait
基金
国家自然科学基金资助项目(40476023
40876031)
关键词
海洋地质学
台湾浅滩
沉积物
粒度
粒径趋势分析
marine geology
Taiwan Bank
sediment
grain-size
grain-size transport analysis
