| 廉州湾南部海域泥沙来源及运移趋势分析 |
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| 引用本文： | 谷东起,吴桑云.廉州湾南部海域泥沙来源及运移趋势分析[J].海洋科学进展,2001,19(1):25-31. |
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| 作者姓名： | 谷东起 吴桑云 |
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| 作者单位： | 国家海洋局 第一海洋研究所，山东 青岛， 266061 |
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| 摘 要： | 重矿物组合、含量变化和特征矿物的分布及变化规律是沿海泥沙来源和运移趋势判断的重要手段之一。通过对廉州湾南部海域海底表层沉积物的重矿物分析 ,发现该区重矿物分布以北海地角为界 ,其百分含量和特征矿物南北有别 ,可能分别代表不同的物质来源区。其中廉州湾北部南流江流域来沙是该区主要物源 ,运移趋势为自 NE向 SW;地角西南岸段、岭南侧海岸侵蚀及银滩来沙也为该区提供了部分物源 ,运移趋势为绕过冠头岭沿海岸向 N方向运移。由于缺乏北海陆域陆相地层重矿物含量等相关资料 ,暂未做物质来源区的具体判断
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| 关 键 词： | 重矿物 泥沙来源 运移趋势 廉州湾 |
| 文章编号： | 1000-7199(2001)01-0025-07 |
| 修稿时间： | 2000年3月13日 |
Analysis of the Sediment Sources and the Transport Tendency in the Southern Lianzhou Bay |
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| GU Dong-qi.Analysis of the Sediment Sources and the Transport Tendency in the Southern Lianzhou Bay[J].Advances in Marine Science,2001,19(1):25-31. |
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| Authors: | GU Dong-qi |
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| Abstract: | The composition and content change of heavy materials, the distribution of characteristic minerals and their variabilities are important means to judge the inshore sediment sources and transport tendency. It is shown from the analysis of the heavy minerals in the bottom sediments of the southern Lianzhou Bay that the distributions and contents of heavy minerals and the characteristic minerals in the areas south and north of Dijiao, Beihai are different from each other, which indicates that the heavy minerals in the two areas may come from different material source areas. Among them, the sediments carried by the Nanliujiang River are the main material source for this area, and the material transport tendency is from NE to SW; and the erosion of the coast southwest of Dijiao and the sediments coming from Yintang Beach are also part of material source for this area, and the sediments migrate northward along the coast. The concrete judgement on the material source area has not yet been made for lack of the relevant land facies heavy mineral content data in the Beihai area. |
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| Keywords: | heavy mineral material source transport tendency Lianzhou Bay |
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