| 摘要: |
| 于1990年运用沉积物捕捉器采样,实测了东海北部(32.00° N, 126.00° E)海域颗粒物质和微量金属(Cu, Pb, Zn, Cr, Fe, Mn和Al)的海洋垂直通量。结果表明,颗粒物质的沉积通量随深度和季节而变化,明显地受上升流的影响。沉积的颗粒物质以0.45 – 63 μm的小颗粒为主;Cu和Zn主要以有机物形式作垂直转移,Pb, Cr, Fe和Mn主要以弱键结合形式作垂直转移,Al则以硅酸盐的形式作垂直转移。沉积物中,颗粒Cu, Fe, Mn和Al以0.45 – 63 μm的颗粒为主;颗粒Pb和Cr以大于63 μm的颗粒为主;0.45 – 63 μm和大于63 μm的颗粒Zn在沉积物中占相近的比例。 |
| 关键词: 颗粒物质 微量金属 沉积通量 东海 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，4870284号。中国科学院海洋研究所调查研究报告第2008号 |
|
| THE SEDIMENT FLUXES OF PARTICULATE MATTER AND TRACE METALS IN NORTHERN EAST CHINA SEA |
|
Zhan Binqiu, Huang Huarui, Pang Xuezhong, Li Pengcheng, Song Jinming, Ren Jianwei
|
|
Institute of Occanology, Acadcmia Sinica, Qingdau 266071
|
| Abstract: |
| Vertical oceanic fluxes of particulate matter and trace metals (Cu, Ph, Zn, Cr, Fe, Mn and Al) were measured with sediment trap in the North East China Sea (32.00° N, 126.00° E) 4 - 6, May and 27 - 29, July, 1990. The average daily fluxes of particulate matter and Cu, Pb, Zn, Fe, Cr, Mn and Al were 0.89 g/(m2?d), 0.11 mg/(m2?d), 0.41 mg/(m2?d), 0.58 mg/(m2?d), 19.75 mg/(m2?d), 0.33 mg/(m2?d), 0.34 mg/(m2?d), and 34.34 mg/(m2?d), respectively. The results showed that the vertical flux changed with depth and seasons, and were obviously influenced by upwelling. The size range of sinking particulate matter was mainly between 0.45 and 63 μm. Vertical transfer of particulate Cu and Zn depended on the organic form, Cr, Fe, Pb and Mn on weak-bond form and Al on silicate form. The size of particulate Cu, Fe, Mn and Al were mainly between 0.45 and 63 μm. Most of sinking particulate Cr and Pb were larger than 63 μm and the proportion of 0.45 – 63 μm and more than 63 μm particulate Zn in sediment matter were similar. |
| Key words: Particulate matter, Trace metal, Sediment flux, East China Sea |
