凤凰岛东侧海域表层沉积物粒度分布特征与运移趋势分析

发布时间：2018-01-12 05:11

本文关键词：凤凰岛东侧海域表层沉积物粒度分布特征与运移趋势分析　出处：《海洋科学》2016年04期 　论文类型：期刊论文

【摘要】：为了对凤凰岛近岸海域的工程建设和岸滩防护提供支持,通过凤凰岛东侧近岸海域的表层沉积物粒度组成及粒度参数的分析,结合Flemming三角图示法和Gao-Collins二维的"粒度趋势分析"方法,研究了该区域沉积环境及沉积物运移趋势。结果显示该区有5种沉积物类型,呈条带状分布,以黏土质粉砂为主体;研究区沉积物整体较细,分选较差,偏态多为正偏;研究区整体水动力较弱,表层沉积物中各级配泥沙分布与不同区域沉积环境关系密切。该区表层沉积物输运主要受潮流和波浪控制,北部区域沉积物运移主要受潮流控制,运移方向呈现由海向岸运输,南部区域沉积物运移受潮流波浪共同作用,运移方向呈现与岸线大致平行向东北方向运移,金沙滩、银沙滩沉积物动力过程主要受波浪控制,近岸处运移趋势呈现由岸向海运输,离岸处运移趋势由海向岸。
[Abstract]:In order to coastal waters of the Phoenix Island construction and beach protection support, through the analysis of grain size composition and grain size parameters of coastal waters on the eastern side of the Phoenix Island, with Flemming triangular diagram method and Gao-Collins two-dimensional size trends analysis research of the regional sedimentary environment and sediment transport trend showed. 5 sediment types in this area, a banded distribution in clayey silt sediments as the main body; the whole is fine, poor sorting, skewness is positively biased; the whole area of water power is weak, the relationship between the distribution of sediment distribution in surface sediments and different levels of regional sedimentary environment closely. The surface sediments. Transport is mainly affected by tide and wave control, the northern region of sediment transport is mainly affected by the flow control, the migration direction presented by the sea shore transport, the southern region of sediment transport by tidal currents and waves together Effect of the migration direction showed roughly parallel to the northeast and shoreline migration, Jinshatan, sediment dynamic process of silver beach is mainly affected by the wave control, inshore migration trend from shore to sea transport, offshore transport trend by the sea shore.

【作者单位】：中国海洋大学海洋地球科学学院;海底科学与探测技术教育部重点实验室;国家海洋局第一海洋研究所;
【基金】：海洋公益性行业科研专项(201005009)~~
【分类号】：P736.2
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