Properties of coarse particles in suspended particulate matter of the North Yellow Sea during summer
文献类型：CNKI期刊论文
| 作者 | ZHANG Kainan; WANG Zhenyan; LI Wenjian; YAN Jun |
| 发表日期 | 2019-01-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | suspended particulate matter(SPM) coarse particles,aggregates North Yellow Sea laser in situ scattering and transmissometery(LISST) |
| 英文摘要 | Fine particles in seawater commonly form large porous aggregates. Aggregate density and settling velocity determine the behavior of this suspended particulate matter(SPM) within the water column.However, few studies of aggregate particles over a continental shelf have been undertaken. In our case study, properties of aggregate particles, including size and composition, over the continental shelf of the North Yellow Sea were investigated. During a scienti?c cruise in July 2016, in situ ef fective particle size distributions of SPM at 10 stations were measured, while temperature and turbidity measurements and samples of water were obtained from surface, middle, and bottom layers. Dispersed and inorganic particle size distributions were determined in the laboratory. The in situ SPM was divided into(1) small particles(<32 μm),(2) medium particles(32–256 μm) and(3) large particles(>256 μm). Large particles and medium particles dominated the total volume concentrations(VCs) of in situ SPM. After dispersion, the VCs of medium particles decreased to low values(<0.1 μL/L). The VCs of large particles in the surface and middle layers also decreased markedly, although they had higher peak values(0.1–1 μL/L). This suggests that almost all in situ medium particles and some large particles were aggregated, while other large particles were single particles. Correlation analysis showed that primary particles <32 μm in?uenced the formation of these aggregates. Microscopic examination revealed that these aggregates consisted of both organic and inorganic ?ne particles, while large particles were mucus-bound organic aggregates or individual plankton.The vertical distribution of coarser particles was clearly related to water strati?cation. Generally, medium aggregate particles were dominant in SPM of the bottom layer. A thermocline blocked resuspension of?ne material into upper layers, yielding low VCs of medium-sized aggregate particles in the surface layer.Abundant large biogenic particles were present in both surface and middle layers. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(No.41476045) ; the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA11030103) |
| 卷 | v.37期:01页:81-94 |
| 语种 | 英文; |
| 分类号 | P736.21 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188670]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.UniversityofChineseAcademyofSciences 2.LaboratoryforMarineMineralResources,QingdaoNationalLaboratoryforMarineScienceandTechnology 3.CASKeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | ZHANG Kainan,WANG Zhenyan,LI Wenjian,et al. Properties of coarse particles in suspended particulate matter of the North Yellow Sea during summer. 2019. |
入库方式： OAI收割
来源：海洋研究所
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