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Acoustic impedance properties of seafloor sediments off the coast of Southeastern Hainan, South China Sea
Hou, ZY; Chen, Z; Wang, JQ; Zheng, XF; Yan, W; Tian, YH; Luo, Y; chzhsouth@scsio.ac.cn
2018
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
Volume154Pages:1-7
AbstractGeoacoustic parameters are essential inputs to sediment wave propagation theories and are vital to underwater acoustic environment and explorations of the sea bottom. In this study, 21 seafloor sediment samples were collected off the coast of southeastern Hainan in the South China Sea. The sound speed was measured using a portable WSD-3 digital sonic instrument and the coaxial differential distance measurement method. Based on the measured sound speed and physical properties, the acoustic impedance and the pore-water-independent index of impedance (IOI) were calculated in this study. Similar to the sound speed, the IOI values are closely related to the sediment physical properties and change gradually from the northwest to the southeast. The relations between IOI and physical properties were studied and compared to the relations between the sound speed and physical properties. IOI is better correlated to physical properties than sound speed. This study also uses an error norm method to analyze the sensitivity of IOI to the physical parameters in the double-parameter equations and finds that the most influential physical parameters are as follows: wet bulk density > porosity > clay content > mean particle size.
Department[Hou, Zhengyu; Chen, Zhong; Zheng, Xufeng; Yan, Wen; Tian, Yuhang; Luo, Yun] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Hou, Zhengyu] Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China; [Hou, Zhengyu] SOA, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China; [Wang, Jingqiang] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, 1 Wenhai Rd, Qingdao 266237, Peoples R China; [Yan, Wen] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Subject AreaGeology
WOS KeywordAcoustic impedance ; Index of impedance ; Sound speed ; Seafloor sediments
Funding ProjectMSG
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17143
Collection中科院边缘海地质重点实验室
Corresponding Authorchzhsouth@scsio.ac.cn
Recommended Citation
GB/T 7714
Hou, ZY,Chen, Z,Wang, JQ,et al. Acoustic impedance properties of seafloor sediments off the coast of Southeastern Hainan, South China Sea[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,154:1-7.
APA Hou, ZY.,Chen, Z.,Wang, JQ.,Zheng, XF.,Yan, W.,...&chzhsouth@scsio.ac.cn.(2018).Acoustic impedance properties of seafloor sediments off the coast of Southeastern Hainan, South China Sea.JOURNAL OF ASIAN EARTH SCIENCES,154,1-7.
MLA Hou, ZY,et al."Acoustic impedance properties of seafloor sediments off the coast of Southeastern Hainan, South China Sea".JOURNAL OF ASIAN EARTH SCIENCES 154(2018):1-7.
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