摘要
对山东半岛白沙滩及邻近海域表层沉积物进行了粒度分析,结合相关的地质水文资料,探讨了海岸形态对沉积物粒度的影响。研究区底质类型以黏土质粉砂和砂质粉砂为主,由东北经古龙咀岬角向西南形成S形黏土质粉砂分布带,险岛湾地区沉积物呈带状由砂逐渐过渡到粉砂,潮汐和波浪是本区沉积物输运的主要水动力,岬角的存在影响了沉积物粒度的分布,粒度趋势分析表明沉积物整体有向岬角汇聚的输运趋势。
From granularity analysis of surface sediment at the White beach and its adjacent area of Shandong Peninsula, together with geological and hydrological data, the effect of coast shape on sediment grain size has been discussed. The sediments are mainly clayey silt and sandy silt in the studied area. There is a S-shape distribution zone of clayey silt from northeast to southwest by Gulong Headland. Sediment gradually changes from sand to silt around Xiandao Bay area. The main hydrodynamic forces of sediment transport are tide and wave. The headland affectes the distribution of sediment grain size. Trend analysis shows that the sediment has a headland gathering transport trends in the whole area.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2008年第4期37-42,共6页
Marine Geology & Quaternary Geology
基金
“908”专项海岛(礁)调查项目(SD-908-01-03-01)
关键词
粒度特征
表层沉积物
岸线形态
白沙滩
山东半岛
characters of grain size
surface sediment coast shape
White beach
Shandong Peninsula
