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冬季黄河口及邻近海域悬浮体粒级组成和分布研究
The grain size distribution of the suspended particulate matter in the Yellow River Estuary and its adjacent area in winter
投稿时间:2009-08-01  修订日期:2009-12-02
DOI:
中文关键词:  冬季  黄河口  悬浮体粒度  空间分布  影响因素
英文关键词:winter  Yellow River Estuary  grain size of suspended particulate matter  spatial distribution  controlling factor
基金项目::国家重大基础研究发展计划项目(2005CB422304) 和国家自然科学基金项目(40676035)联合资助
作者单位E-mail
曾明 中国海洋大学 vs2118@ouc.edu.cn 
范德江 中国海洋大学海洋地球科学学院 djfan@ouc.edu.cn 
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中文摘要:
       利用LISST-100激光粒度仪于2006年l1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,进而分析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介于3.00~6.41Φ之间,平均值为4.66Φ;粒度分布为非正态分布,表层、中层悬浮体的粒度分布呈双峰和三峰两种模式,底层则为单峰模式和双峰模式;表、中层悬浮体的搬运方式以递变悬浮为主,中层少量的跳跃搬运,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到底质类型、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。
英文摘要:
       The grain size of suspended particulate matter in the Yellow River 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: 1) The mean grain-size of the suspended particulate matter ranges from 3.00~6.41Φ, with an average value of 4.66Φ. 2) The grain size distribution patterns of the suspended sediment included three types, e. g. mono-mode, dua-mode and tri-mode. 3) C-M patterns suggested that transportation forms of the suspended particulate matter not only included suspended transportation, but bed load transportation. The bed load transportation mainly appeared at bottom layer. The grain size pattern and distribution were basically controlled by the Yellow River discharge, hydrodynamics, surface sediment type, and chemical and biological conditions.
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