| 深海沉积物分类与命名的参数指标和主成分分析 |
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| 引用本文： | 张富元,章伟艳,张霄宇,陈奎英,孟翊,姚旭莹,赵宏樵. 深海沉积物分类与命名的参数指标和主成分分析[J]. 海洋学报, 2010, 32(6): 118-129 |
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| 作者姓名： | 张富元 章伟艳 张霄宇 陈奎英 孟翊 姚旭莹 赵宏樵 |
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| 作者单位： | 1.国家海洋局 第二海洋研究所 海底科学国家海洋局重点实验室, 浙江 杭州 310012; 国家海洋局 第二海洋研究所,浙江 杭州 310012 |
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| 基金项目： | 国家科学技术部科技基础性工作专项项目--深海沉积物分类与命名(2006FY220400);"九○八"专项(908-02-05-03)。 |
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| 摘 要： | 对于南海中部(118个表层沉积物样,水深82~4 420 m)、东部(106个表层沉积物样,水深700~4 508 m)海域的表层沉积物的粒度资料按小于200 m,200~2 000 m,大于2 000 m水深段对水深、平均粒径、黏土含量进行统计分析,结果表明从陆架到陆坡再到深海,平均粒径和黏土含量随水深增加呈非常有规律的变化;把大于2 000 m水深区域再细分为大于2 500 m,大于3 000 m,大于3 500 m,结果表明平均粒径和黏土含量随水深增加几乎无变化,在南海中部水深大于2 000 m海域平均粒径为3.39~3.54μm,黏土平均含量为54.91%~55.47%;在南海东部水深大于2 000 m海域平均粒径为3.25~3.37μm,黏土平均含量为53.91%~54.56%。研究表明2 000 m水深具有划分深海沉积物的指示意义。南海中部水深大于2 000 m海域黏土平均含量为55.19%,平均粒径为3.39μm;在南海东部水深大于2 000 m海域黏土平均含量为53.91%,平均粒径为3.37μm;在南海中部、东部水深大于2 000 m海域平均粒径均小于4μm,黏土平均含量均大于50%,表明深海沉积物粒度特征是平均粒径小于4μm和黏土平均含量大于50%。黏土含量是非生物组分的代表和划分深海沉积物类型的一个独立参数,钙质生物和硅质生物组分是另外两个独立参数。南海东部海域表层沉积物中55种元素总含量为47.50%,硅、铝、钛、钠、钾、磷、钙、镁、铁、锰十种主元素含量为47.03%,其他45种元素含量为0.47%,虽然沉积物来源复杂、成因不同,但沉积物化学主成分并不复杂,主要由前10种主元素和氧元素组成。沉积物主元素铝、钙、硅分别富集于黏土、钙质沉积、硅质沉积中。通过建立沉积物生源组分与碳酸钙、三氧化二铝、二氧化硅的量化关系,可把碳酸钙、生物二氧化硅作为钙质生物和硅质生物的两个替代参数。
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| 关 键 词： | 深海沉积物分类 水深 平均粒径 黏土含量 参数指标 主成分分析 |
| 收稿时间： | 2010-07-15 |
| 修稿时间： | 2010-11-08 |
Indices of classification and nomenclature for deep-sea sediment and principal component analysis |
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| ZHANG Fu-yuan,ZHANG Wei-yan,ZHANG Xiao-yu,CHEN Kui-ying,MENG Yi,YAO Xu-ying and ZHAO Hong-qiao. Indices of classification and nomenclature for deep-sea sediment and principal component analysis[J]. Acta Oceanologica Sinica (in Chinese), 2010, 32(6): 118-129 |
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| Authors: | ZHANG Fu-yuan ZHANG Wei-yan ZHANG Xiao-yu CHEN Kui-ying MENG Yi YAO Xu-ying ZHAO Hong-qiao |
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| Affiliation: | Key Laboratory of State Oceanic Administration for Submarine Sciences, Second Institute of Oceanography,State Oceanic Administration, Hangzhou 310012, China; Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of State Oceanic Administration for Submarine Sciences, Second Institute of Oceanography,State Oceanic Administration, Hangzhou 310012, China; Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Earth Science Department,Zhejiang University, Hangzhou 310012, China;National Marine Data & Information Service, State Oceanic Administration,Tianjin 300171, China;Institute of Estuarine and Coastal Research,East China Normal University,Shanghai 200062, China;Key Laboratory of State Oceanic Administration for Submarine Sciences, Second Institute of Oceanography,State Oceanic Administration, Hangzhou 310012, China; Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of State Oceanic Administration for Submarine Sciences, Second Institute of Oceanography,State Oceanic Administration, Hangzhou 310012, China; Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| Abstract: | The grain size and content of clay from surface sediments in accordance with water depth of less than 200 m,200~2 000 m and more than 2 000 m in the central South China Sea(118 surface sediment samples with water depth from 82 to 4 420 m) and eastern South China Sea(106 surface sediment samples with water depth from 700 to 4508m) were statistically analyzed.The results indicate that the average grain size and content of clay have distinctly regular changes with water depth;furthermore,no remarkable change w... |
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| Keywords: | classification of sediment in deep sea water depth average grain size content of clay indices principal component analysis |
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