杨旭辉,冯秀丽,褚忠信,范德江,董爱国

• 1:中国海洋大学海洋地球科学学院
• 2:中国海洋大学海底科学与探测技术教育部重点实验室

摘要(Abstract)：

对取自中国东部陆架海的209个表层沉积物样品进行了粒度分析及沉积物类型划分,探讨细颗粒沉积区分布格局与物源和环流体系的关系。结果表明,研究区底质类型主要有砂、粉砂质砂、泥质砂、砂质粉砂、砂质泥、粉砂和泥,个别站位含砾石。表层沉积物以粗颗粒砂质沉积为主,其主要分布在东海中北部、苏北浅滩、北黄海北部,其粒度特征主要为:平均粒径2～4Φ,分选差(分选系数>2),偏态极正偏(2～2.80),峰态很宽至宽(1.60～3.50);细颗粒泥质沉积主要分布在浙江沿岸至长江口外、苏北老黄河口外、南黄海中部、北黄海西南部及黄河口外的渤海海域,其粒度特征主要为:平均粒径6～7Φ,分选差至较差(分选系数1～2.5),偏态负偏(-1.50～-0.33)至近于对称(-0.33～+0.33),峰态很宽(>2.75)。从环流的流向与路径及邻近的河流物源角度,初步探讨了河流输入物质及环流体系对细颗粒沉积物沉积分布格局的影响,并初步推断了细颗粒沉积物的物源及基本输移路径。

关键词(KeyWords)： 中国东部陆架;表层沉积物;粒度;沉积动力;物源

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40906024;41030856;40976020;41076022);; 教育部新教师基金项目(200804231011);; 山东省自然科学基金项目(Y2007E14)资助

作者(Author): 杨旭辉,冯秀丽,褚忠信,范德江,董爱国

DOI: 10.16441/j.cnki.hdxb.2012.z2.019

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