Measurements of suspended particulate matter with laser in-situ scattering and transmissometry in the Jiaozhou Bay in China

	Measurements of suspended particulate matter with laser in-situ scattering and transmissometry in the Jiaozhou Bay in China
	Wei Jianwei; Shi Xuefa; Fang Xisheng; Zhang Weibin
刊名	ACTA OCEANOLOGICA SINICA
	2007
卷号	26 期号:1 页码:55-65
关键词	suspended particle size distribution beam attenuation LISST-100 Jiaozhou Bay
ISSN号	0253-505X
英文摘要	A laser in-situ scattering and transmissometry probe (LISST - 100) was used to estimate the spatial variations of suspended particle (aggregate) distribution, volume concentration and beam attenuation in the Jiaozhou Bay, Qingdao, China on 18 July 2003. One study site was located at the mouth (Sta. J1), with the other being within the inner bay (Sta. J2). Measurements of total suspended matter (TSM) and chlorophyll fluorescence and sampling of bottom sediments were carried out simultaneously. On the basis of the field data, the in-situ particle effective density, settling velocity and flux, and particle projected surface area (PSA) were estimated. The results demonstrate that both profiles have similar particle size distributions from surface to bottom within the water columns. Mean particle diameters for Stas J1 and J2 are 38 - 74 and 1 - 20 mu m, respectively, particles within these ranges dominate over the particulate components. Suspended particle volume concentrations increase with water depth, with spikes near the bottom. At Sta. J1, the mean size of bottom sediments and those of suspended particles at 10.8 in below the water surface are almost the same, as well as their size distributions. This observation suggests that a special affinity exists between bottom sediment and suspended particles. In addition, the estimates show that the effective density, settling velocity and flux are higher in the inner bay. Beam attenuation coefficient correlates well with the volume concentration, positively. It is inferred that the optical scattering was mostly caused by 1 similar to 250 mu m components, among which the particles finer than 20 mu m dominate the beam attenuation. The PSA appears a proxy for the leaving reflectance estimation.
WOS关键词	PARTICLE-SIZE ; SETTLING VELOCITY ; SEDIMENT TRANSPORT ; COASTAL WATERS ; FLOC BREAKAGE ; MINERAL FLOCS ; NORTH-SEA ; SPECTRA ; DISTRIBUTIONS ; CHLOROPHYLL
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000244330100006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26981]
专题	自然资源部第一海洋研究所
通讯作者	Shi Xuefa
作者单位	State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol State O, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Wei Jianwei,Shi Xuefa,Fang Xisheng,et al. Measurements of suspended particulate matter with laser in-situ scattering and transmissometry in the Jiaozhou Bay in China[J]. ACTA OCEANOLOGICA SINICA,2007,26(1):55-65.
APA	Wei Jianwei,Shi Xuefa,Fang Xisheng,&Zhang Weibin.(2007).Measurements of suspended particulate matter with laser in-situ scattering and transmissometry in the Jiaozhou Bay in China.ACTA OCEANOLOGICA SINICA,26(1),55-65.
MLA	Wei Jianwei,et al."Measurements of suspended particulate matter with laser in-situ scattering and transmissometry in the Jiaozhou Bay in China".ACTA OCEANOLOGICA SINICA 26.1(2007):55-65.