冬季黄河口及邻近海域悬浮体粒级组成和分布研究

曾明; 范德江; 孙效功; 王帅; 杨作升

冬季黄河口及邻近海域悬浮体粒级组成和分布研究

1.
中国海洋大学海底科学与探测技术教育部重点实验室,山东青岛 266100
2.
中国气象局气象科学研究院,北京 100081

基金项目: 国家重大基础研究发展计划项目(2005CB422304);国家自然科学基金项目(40976020)。

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出版历程
- 收稿日期: 2009-08-01

The grain-size distribution of the suspended particulate matter in the Huanghe Estuary and its adjacent area in winter

1.
Key Laboratory of Ministry of Education for Submarine Geosciences and Technology, Ocean University of China, Qingdao 266100, China.
2.
Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing 100081, China

摘要

摘要: 利用LISST—100激光粒度仪于2006年11月在黄河口及附近海域进行现场粒度调查,揭示了冬季低流量下悬浮体粒度组成和空间分布特征,分析了其制约因素和沉积动力学意义。研究表明,黄河口悬浮体平均粒径为3.00Φ—6.41Φ,平均值为4.66Φ;粒度分布为非正态分布,在表层、中层悬浮体的粒度分布呈双峰和三峰两种模式,在底层则为单峰模式和双峰模式;在表层、中层悬浮体的搬运方式以递变悬浮为主,在中层有少量为跳跃搬运,而底层的悬浮体主要以跳跃搬运为主。黄河口悬浮体粒度组成受底质类型、冲淤状态、黄河径流、海洋动力以及絮凝和生物作用等多种因素的共同影响。
- 冬季 /
- 黄河口 /
- 悬浮体粒度 /
- 空间分布 /
- 影响因素
Abstract: The grain-size of suspended particulate matter in the Huanghe Estuary and its adjacent area was investigated with an in situ laser grain-size analyzer in November 2006. The grain-size parameters and distribution patterns vary strongly in the horizontal and vertical directions. The results show that (1) the mean grain-size of the suspended particulate matter ranges from 3.00Φ to 6.41Φ, with an average value of 4.66Φ; (2) the grain-size distribution patterns of the suspended sediment include three types, e. g., monomode, bimode and trimode; (3) C-M patterns suggest that transportation forms of the suspended particulate matter not only include suspended transportation, but bed load transportation. The bed load transportation mainly appeared at the bottom layer. The grain-size pattern and distribution were basically controlled by the Huanghe discharge, hydrodynamics, surface sediment type, and chemical and biological conditions.
- winter /
- Huanghe Estuary /
- grain-size of suspended particulate matter /
- spatial distribution /
- controlling factor

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