渤海底质沉积物粒度特征及输运趋势探讨

乔淑卿; 石学法; 王国庆; 杨刚; 胡宁静; 刘升发; 刘焱光; 朱爱美; 李朝新

渤海底质沉积物粒度特征及输运趋势探讨

1.
国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,山东青岛 266061
2.
中国地质大学,地球科学学院,湖北武汉 430074

基金项目: 国家自然科学基金项目(40806026);"九○八"专项课题(908-ZC-I-05;908-02-02-05);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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出版历程
- 收稿日期: 2009-11-26

Discussion on grain-size characteristics of seafloor sediment and transport pattern in the Bohai Sea

1.
Key Laboratory of State Oceanic Administration for Marine Sedimentology & Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China

摘要

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,在滦河口和黄河口也有零星分布;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。
- 渤海 /
- 黄河 /
- 沉积物 /
- 粒度趋势分析
Abstract: The 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 is mainly distributed on Liaodong and Bozhong shoals and occurs occasionally near the Luanhe and Huanghe mouths; fine-grained sediment mainly covers the central and southern part of Bohai Gulf and extends farther to the west of Liaodong Gulf. The fine-grained sediment is 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 displays a net transport trend toward it. The distribution and transport pattern of sediment in the study area are proposed to be controlled by tidal currents and circulations.
- Bohai Sea /
- Huanghe River /
- sediment /
- grain-size trend analysis

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