Properties of coarse particles in suspended particulate matter of the North Yellow Sea during summer

doi:10.1007/s00343-019-7153-x

IOCAS-IR > 海洋地质与环境重点实验室

	Properties of coarse particles in suspended particulate matter of the North Yellow Sea during summer
	Zhang Kainan 1,3; Wang Zhenyan 1,2,3; Li Wenjian 1,3; Yan Jun 1,3
	2019
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
卷号	37 期号:1 页码:79-92
通讯作者	Wang Zhenyan(zywang@qdio.ac.cn)
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 scientific cruise in July 2016, in situ effective 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 mu m), (2) medium particles (32-256 mu m) and (3) large particles (>256 mu m). 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 mu L/L). The VCs of large particles in the surface and middle layers also decreased markedly, although they had higher peak values (0.1-1 mu L/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 mu m influenced the formation of these aggregates. Microscopic examination revealed that these aggregates consisted of both organic and inorganic fine particles, while large particles were mucus-bound organic aggregates or individual plankton. The vertical distribution of coarser particles was clearly related to water stratification. Generally, medium aggregate particles were dominant in SPM of the bottom layer. A thermocline blocked resuspension of fine 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.
关键词	suspended particulate matter (SPM) coarse particles aggregates North Yellow Sea laser in situ scattering and transmissometery (LISST)
DOI	10.1007/s00343-019-7153-x
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA11030103] ; National Natural Science Foundation of China[41476045] ; National Natural Science Foundation of China[41476045] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA11030103]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000459304100007
出版者	SCIENCE PRESS
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/155409
专题	海洋地质与环境重点实验室
通讯作者	Wang Zhenyan
作者单位	1.Chinese Acad Sci, CAS Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
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[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(1):79-92.
APA	Zhang Kainan,Wang Zhenyan,Li Wenjian,&Yan Jun.(2019).Properties of coarse particles in suspended particulate matter of the North Yellow Sea during summer.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(1),79-92.
MLA	Zhang Kainan,et al."Properties of coarse particles in suspended particulate matter of the North Yellow Sea during summer".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.1(2019):79-92.