| 伶仃洋表层沉积物特征及其泥沙运移趋势 |
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| 引用本文： | 肖志建,李团结,廖世智.伶仃洋表层沉积物特征及其泥沙运移趋势[J].热带海洋学报,2011(4). |
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| 作者姓名： | 肖志建 李团结 廖世智 |
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| 作者单位： | 国家海洋局南海工程勘察中心; |
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| 基金项目： | 国家海洋局青年基金项目(2009211); 国家海洋局南海分局局长基金项目(0516); 我国近海海洋综合调查与评价专项底质调查项目(908-01-CJ15) |
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| 摘 要： | 根据伶仃洋表层沉积物的粒度分析资料,探讨表层沉积物的特征,并在此基础上应用Gao-Collins粒径趋势分析方法(GSTA模型)分析了伶仃洋表层沉积物的泥沙净输运趋势。结果表明,伶仃洋表层沉积物共有6种类型,其中以黏土质粉砂分布最广泛。受径流、潮流、波浪和陆架水入侵等多种动力作用,伶仃洋表层沉积物颗粒在北面最粗,南面次之,中间最细,东面略粗,西面略细;分选由中部向东、西两岸逐渐变好,但总体分选差;不同级配的泥沙分布和沉积特征存在差异。伶仃洋泥沙运移规律较复杂,泥沙呈现出向西南输运的总趋势;内伶仃洋四周泥沙受各种力作用,呈现出顺时针方向的环流运移,中心区域为最大浑浊带,泥沙以垂直落淤为主。淇澳岛以南至澳门半岛以东海域受粉砂和黏土向西扩散影响,泥沙向西运移。大屿海峡及外伶仃岛附近海域为高盐水入侵通道,泥沙向西北运移。
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| 关 键 词： | 沉积特征 粒度参数 泥沙输运 运移趋势 珠江河口 伶仃洋 GSTA模型 |
Surface sediment characteristics and transport trend in Lingdingyang Bay of the Pearl River Estuary |
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| XIAO Zhi-jian,LI Tuan-jie,LIAO Shi-zhi South China Sea Marine Engineering Surveying Center,SOA,Guangzhou ,China.Surface sediment characteristics and transport trend in Lingdingyang Bay of the Pearl River Estuary[J].Journal of Tropical Oceanography,2011(4). |
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| Authors: | XIAO Zhi-jian LI Tuan-jie LIAO Shi-zhi South China Sea Marine Engineering Surveying Center SOA Guangzhou China |
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| Institution: | XIAO Zhi-jian,LI Tuan-jie,LIAO Shi-zhi South China Sea Marine Engineering Surveying Center,SOA,Guangzhou 510300,China |
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| Abstract: | The authors analyzed surface sediment characteristics of Lingdingyang Bay in the Pearl River Estuary based on 230 bed material samples collected in December 2004.Sediment transport trends were identified by the grain-size trends calculated using the Gao-Collins Grain Size Trend Analysis Model(GSTA model).The results indicate that there are six types of bed materials in the Lingdingyang Bay,with clayey silt being the dominant type.Under the influences of runoff,tidal current,wind waves,and salty water,the be... |
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| Keywords: | sediment characteristics grain-size parameter sediment transport grain-size trend Pearl River Estuary Ling-dingyang Bay GSTA pattern |
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