Acoustic backscattering measurement from sandy seafloor at 6-24 kHz in the South Yellow Sea

doi:10.1007/s13131-019-1388-4

	Acoustic backscattering measurement from sandy seafloor at 6-24 kHz in the South Yellow Sea
	Kan, Guangming 1,2; Liu, Baohua 2,3; Yang, Zhiguo 2,3; Yu, Shengqi 2,3; Qi, Lehua 1,4; Yu, Kaiben 2,3; Pei, Yanliang 1,2
刊名	ACTA OCEANOLOGICA SINICA
	2019-05
卷号	38 期号:5 页码:99-108
关键词	acoustic backscattering strength sandy bottom South Yellow Sea gazing angle dependence frequency dependence
ISSN号	0253-505X
DOI	10.1007/s13131-019-1388-4
英文摘要	The acoustic bottom backscattering strength was measured at the frequency range of 6-24 kHz on a typical sandy bottom in the South Yellow Sea by using omnidirectional sources and omnidirectional receiving hydrophones. In the experiment, by avoiding disturbances due to scattering off the sea surface and satisfying the far-field condition, we obtained values of acoustic bottom backscattering strength ranging from -41.1 to -24.4 dB within a grazing angle range of 18 degrees-80 degrees. In the effective range of grazing angles, the acoustic scattering strength generally increases with an increase in the grazing angles, but trends of the variation were distinct in different ranges of frequency, which reflect different scattering mechanisms. The frequency dependence of bottom backscattering strength is generally characterized by a positive correlation in the entire frequency range of 6-24 kHz at the grazing angles of 20 degrees, 40 degrees and 60 degrees with the linear regression slopes of 0.222 9 dB/kHz, 0.513 0 dB/kHz and 0.174 6 dB/kHz, respectively. At the largest grazing angle of 80 degrees, the acoustic backscattering strength exhibits no evident frequency dependence.
资助项目	Taishan Scholar Project Funding[tspd20161007]
WOS关键词	HIGH-FREQUENCY ; BOTTOM BACKSCATTERING ; GRAZING ANGLES ; SCATTERING ; SEDIMENT
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000484973600009
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/30056]
专题	自然资源部第一海洋研究所
通讯作者	Liu, Baohua
作者单位	1.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Shandong, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol & Environm, Qingdao 266237, Shandong, Peoples R China 3.Minist Nat Resources, Natl Deep Sea Ctr, Qingdao 266237, Shandong, Peoples R China 4.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Kan, Guangming,Liu, Baohua,Yang, Zhiguo,et al. Acoustic backscattering measurement from sandy seafloor at 6-24 kHz in the South Yellow Sea[J]. ACTA OCEANOLOGICA SINICA,2019,38(5):99-108.
APA	Kan, Guangming.,Liu, Baohua.,Yang, Zhiguo.,Yu, Shengqi.,Qi, Lehua.,...&Pei, Yanliang.(2019).Acoustic backscattering measurement from sandy seafloor at 6-24 kHz in the South Yellow Sea.ACTA OCEANOLOGICA SINICA,38(5),99-108.
MLA	Kan, Guangming,et al."Acoustic backscattering measurement from sandy seafloor at 6-24 kHz in the South Yellow Sea".ACTA OCEANOLOGICA SINICA 38.5(2019):99-108.