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| 渤海底质沉积物的粒度特征及输运趋势探讨 |
| Discussion on grain-size characteristics of seafloor sediment and transport pattern over the Bohai Sea |
| 投稿时间：2009-11-26 修订日期：2010-04-06 |
| DOI： |
| 中文关键词: 渤海 黄河 沉积物 粒度趋势分析 |
| 英文关键词:Bohai Sea Huanghe (Yellow River) Sediment Grain-size trend analysis |
| 基金项目:国家自然科学基金项目（编号：40806026）；908专项课题（编号：908-ZC-I-05和908-02-02-05）和 国家海洋局第一海洋研究所基本科研业务专项项目（GY02-2008T28、GY02-2008G39）资助 |
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| 摘要点击次数: 1377 |
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| 中文摘要: |
| 基于对渤海171个表层沉积物样品的粒度分析测试结果，使用Gao-Collins（1992）粒径趋势分析方法，研究了渤海底质沉积物的分布特征和输运趋势。结果表明：渤海粗粒级沉积物主要分布于辽东和渤中浅滩附近，滦河口和黄河口也有零星出现；细粒级沉积物主要分布于渤海湾中部和南部，并呈条带状向辽东湾方向延伸。细粒级沉积物分选较粗粒级沉积物好、偏态系数较低；渤海细粒级沉积区为渤海的现代沉积中心，周边沉积物有向这个沉积中心汇聚的输运趋势。这种沉积物分布格局和输运趋势主要受潮流和渤海环流的控制。 |
| 英文摘要: |
| Grain-size distribution and transport pattern of seafloor sediment collected from the Bohai Sea were studied using grain-size data and Gao-Collins grain-size trend analysis method. The results show that coarse-grained sediment are mainly distributed on Liaodong and Bozhong shoals and occur occasionally near the Luanhe and Huanghe (Yellow River) mouths; Fine-grained sediment mainly cover the central and southern part of Bohai Bay and extend farther to the west of Liaodong Bay. The fine-grained sediment are better sorted with lower skewness compared with the coarse-grained sediment; The fine-grained sediment area is considered to be a modern depositional center of the Bohai Sea and the sediment outside the center display a net transport trend toward it. The distribution and transport pattern of sediment in the study area are proposed to be controlled by the tidal currents and circulation. |
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