| 靖海湾表层沉积物粒度特征及沉积动力环境分区 |
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| 引用本文： | 张先锋,吴建政,胡日军,朱龙海.靖海湾表层沉积物粒度特征及沉积动力环境分区[J].海洋地质动态,2013(10):47-51. |
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| 作者姓名： | 张先锋 吴建政 胡日军 朱龙海 |
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| 作者单位： | [1]中国海洋大学海洋地球科学学院,青岛266100 [2]中国海洋大学海底科学与探测技术教育部重点实验室,青岛266100 |
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| 基金项目： | 国家自然科学基金项目（41106039） |
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| 摘 要： | 随着人类开发活动的加剧，靖海湾沉积动力环境受到显著影响。靖海湾57个站位的表层沉积物调查资料的分析结果表明，靖海湾表层沉积物以砂质粉砂和粉砂为主，含有少量泥，沉积物粒径偏小；随着水动力条件的增强，表层沉积物平均粒径增大，分选系数呈增大趋势，正偏更显著；以此为依据，利用Pejrup三角图式把靖海湾划分出4个沉积动力环境单元，结合粒度概率图，认为靖海湾沉积物搬运方式以悬浮为主，跃移次之，并有少量以推移方式搬运，随着水动力条件的增强，悬浮组分减少，跃移组分和推移组分增加。
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| 关 键 词： | 靖海湾 表层沉积物 Pejrup三角图式 沉积动力环境 |
GRAIN SIZE DISTRIBUTION PATTERN OF SURFACE SEDIMENT IN JINGHAI BAY AND DYNAMIC ENVIERONMENT DIVISION |
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| ZHANG Xianfeng,WU Jianzheng,HU Rijun,ZHU Longhai.GRAIN SIZE DISTRIBUTION PATTERN OF SURFACE SEDIMENT IN JINGHAI BAY AND DYNAMIC ENVIERONMENT DIVISION[J].Marine Geology Development,2013(10):47-51. |
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| Authors: | ZHANG Xianfeng WU Jianzheng HU Rijun ZHU Longhai |
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| Institution: | 1 College of Marine Geoseienees, Ocean University of China, Qingdao 266100, China ;2 Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, China) |
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| Abstract: | The dynamics of the depositional environment in the Jinghai Bay is significantly affected by human activities. The survey at 57 stations reveals that the surface sediments in the Jinghai Bay con- sist mainly of sandy silt and silt, with a small amount of mud. Whereas the hydrodynamics becomes stronger, all the grain size parameters, such as mean grain size, sorting coefficient and skewness in- crease. Pejrup＇s triangular diagram was adopted to divide the Jinghai Bay into 4 dynamic environments in c ded the ation of the grain size probability cumulative curves. The sediment is dominated by suspen- followed by saltation load and rolling load successively. The suspended load decreases with ification of hydrodynamics. |
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| Keywords: | Jinghai Bay surface sediment Pejrup triangular diagram sediment dynamic environment |
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