Fine sediment resuspension dynamics in Moreton Bay

IOCAS-IR > 海洋环流与波动重点实验室

	Fine sediment resuspension dynamics in Moreton Bay
	You Zai-jin ; Yin Bao-shu
	2007
发表期刊	CHINA OCEAN ENGINEERING
ISSN	0890-5487
卷号	21 期号:2 页码:267-280
文章类型	Article
摘要	A comprehensive field study has been undertaken to investigate sediment resuspension dynamics in the Moreton Bay, a large semi-enclosed bay situated in South East Queensland, Australia. An instrumented tripod, which housed three current meters, three OBS sensors and one underwater video camera, was used to collect the field data on tides, currents, waves and suspended sediment concentrations at four sites (Sites 1, 2, 4, and 5) in the bay. Site I was located at the main entrance, Site 2 at the central bay in deep water, and Sites 4 and 5 at two small bays in shallow water. The bed sediment was fine sand (d(50) = 0. 2 mm) at Site 1, and cohesive sediment at the other three sites. Based on the collected field data, it is found that the dominant driving forces for sediment resuspension are a combination of ocean swell and tidal currents at Site 1, tidal currents at Site 2, and wind-waves at Sites 4 and 5. The critical bed shear stress for cohesive sediment resuspension is determined as 0. 079 Pa in unidirectional flow at Site 2, and 0. 076 Pa in wave-induced oscillatory flow at Site 5.; A comprehensive field study has been undertaken to investigate sediment resuspension dynamics in the Moreton Bay, a large semi-enclosed bay situated in South East Queensland, Australia. An instrumented tripod, which housed three current meters, three OBS sensors and one underwater video camera, was used to collect the field data on tides, currents, waves and suspended sediment concentrations at four sites (Sites 1, 2, 4, and 5) in the bay. Site I was located at the main entrance, Site 2 at the central bay in deep water, and Sites 4 and 5 at two small bays in shallow water. The bed sediment was fine sand (d(50) = 0. 2 mm) at Site 1, and cohesive sediment at the other three sites. Based on the collected field data, it is found that the dominant driving forces for sediment resuspension are a combination of ocean swell and tidal currents at Site 1, tidal currents at Site 2, and wind-waves at Sites 4 and 5. The critical bed shear stress for cohesive sediment resuspension is determined as 0. 079 Pa in unidirectional flow at Site 2, and 0. 076 Pa in wave-induced oscillatory flow at Site 5.
关键词	Sediment Resuspension Critical Bed Shear Stress Wind Waves Ocean Swell
收录类别	SCI
语种	英语
WOS记录号	WOS:000247856500008
引用统计	被引频次：3[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/337002/6250
专题	海洋环流与波动重点实验室
作者单位	1.NSW Dept Nat Resources, Coastal Unit, Dangar, NSW 2309, Australia 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	You Zai-jin,Yin Bao-shu. Fine sediment resuspension dynamics in Moreton Bay[J]. CHINA OCEAN ENGINEERING,2007,21(2):267-280.
APA	You Zai-jin,&Yin Bao-shu.(2007).Fine sediment resuspension dynamics in Moreton Bay.CHINA OCEAN ENGINEERING,21(2),267-280.
MLA	You Zai-jin,et al."Fine sediment resuspension dynamics in Moreton Bay".CHINA OCEAN ENGINEERING 21.2(2007):267-280.

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