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Acoustic characteristics of seafloor sediments in the abyssal areas of the South China Sea
Hou, ZY; Chen, Z; Wang, JQ; Zheng, XF; Yan, W; Tian, YH; Luo, Y; zyhou@scsio.ac.cn
2018
发表期刊OCEAN ENGINEERING
卷号156页码:93-100
摘要Deep-sea sediment cores were obtained from abyssal areas (water depth > 4000 m) in the South China Sea (SCS) to derive acoustic characteristics by using a WSD-3 digital acoustic instrument at a frequency of 100 kHz. The compressional wave velocity (Vp) of the seafloor sediments in the central basin is differentiated into 3 provinces on the basis of the sediment properties (esp. mean grain size and velocity). Provinces 1.11 and H2 have a high compressional wave velocity and coarse particles, while the middle province L. has a low compressional wave velocity and fine particles. The results show that the distribution of Vp is related to the sediment physical properties, sediment sources and ocean current. Vertical variations in the Vp indicate that it increases with burial depth in the high-velocity province, but is complicated in the low-velocity province, reflecting that the more active or complicated sedimentary environment in province L may be affected by the topography. We proposed a laboratory sound velocity measurement method based on Hamilton sound velocity ratio method. In addition, the measurement values from this method are close to the in situ sound velocity determined by adjusting the temperature of the sediment samples.
部门归属[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; Wang, Jingqiang] SOA, Inst Oceanog 1, Key Lab Seafloor Sedimentol & Environm Geol, Qingdao 266061, Peoples R China; [Hou, Zhengyu] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China; [Yan, Wen; Tian, Yuhang; Luo, Yun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
学科领域Engineering ; Oceanography
关键词[WOS]Acoustic characteristics ; Abyssal areas ; Sound velocity ratio ; South China sea
资助项目MSG
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17134
专题中科院边缘海地质重点实验室
通讯作者zyhou@scsio.ac.cn
推荐引用方式
GB/T 7714
Hou, ZY,Chen, Z,Wang, JQ,et al. Acoustic characteristics of seafloor sediments in the abyssal areas of the South China Sea[J]. OCEAN ENGINEERING,2018,156:93-100.
APA Hou, ZY.,Chen, Z.,Wang, JQ.,Zheng, XF.,Yan, W.,...&zyhou@scsio.ac.cn.(2018).Acoustic characteristics of seafloor sediments in the abyssal areas of the South China Sea.OCEAN ENGINEERING,156,93-100.
MLA Hou, ZY,et al."Acoustic characteristics of seafloor sediments in the abyssal areas of the South China Sea".OCEAN ENGINEERING 156(2018):93-100.
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