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| 东海悬浮物质再悬浮比率的初步研究 |
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詹滨秋, 宋金明
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中国科学院海洋研究所
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| 摘要: |
| 海洋中悬浮颗粒物质(SPM)的化学特征和沉积通量的研究对于了解全球物质循环和确定海洋吸收、贮存和转移碳能力的生物地球化学过程具有重要的意义。陆架海洋沉积物的再悬浮作为海洋悬浮颗粒物质的一个重要来源已引起本领域专家的重视(詹滨秋等，1993)。Hosika等(1994)在研究东海陆架和沿岸区时,证实在东海存在一个底层涡动层，其悬浮颗粒物质的含量可达总量的30%-40%。Kusakabe等(1994)运用光透射仪(Bean Transmisso Meter)研究涡动层的颗粒物质,以上研究都未能定量地计算再悬浮的比率。本文根据悬浮颗粒物质特征化学成分的垂直通量以及它们在海洋中自身生成的和沉积物再悬浮的悬浮颗粒物质中含量的关系,建立了定量化学模式,并运用现场资料定量计算东海陆架海洋中悬浮物质的再悬浮比率(αγ)。 |
| 关键词: 东海、悬浮物质、再悬浮比率 |
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| 基金项目:中国科学院海洋研究所调查研究报告第2756号
本课题为国家自然科学基金资助项目，49636210号 |
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| STUDY ON RESUSPENSION RATE OF SUSPENDED MATTER IN THE EAST CHINA SEA |
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Zhan Binqiu, Song Jinming
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Institute of Oceanology,Chinese Academy of Sciences
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| Abstract: |
| Based on the material flux and characteristic chemical component content in the suspended matter, the equation of the resuspension rate of the suspended mater is:
αr: resuspension rate; CSA, CrA, CA are respectively the content of characteristic chemical component in the sea -born suspended matter, mixing suspended matter and sediment. The results showed that: (1)the resuspension rate is more than 96% in the bottom layer and more than 32% in the surface layer (2)the choice of the chemical component,A, is very important in the suspended matter in order to satisfy all three assumed conditions when the equation is used and the average standard deviation(?n-1) is less than 2.1%.(3)the resuspension rate in the suspended matter must be considered when calculating the material flux in the East China Sea. |
| Key words: EAST CHINA SEA,RESUSPENSION RATE,SUSPENDED MATTER |
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