Sound Attenuation in Marine Sediment of the Unfloccalation and Flocculation
If one assumes that the mechanism of sound attenuation in sediments is due to viscous friction between sediment particles and sea water arising from their relative motion in sound field, the theoretical results thus obtained can be used to explain the sound attenuation in artificial sediments or loose sandy sediments. But the experimental results that sound attenuation is proportional to the first power of frequency for flocculation sediments can not be explained. If one assumes that the internal dispersion of sediment is responsible, then the theoretical result is successful in explaining experimental measurements in flocculation sediments. In this paper, the contributions of the above mentioned tow mechanisms are considered simultaneously, the attenuation coefficients in sediment is derived, and it is found that the theoretical result can be used to explain measured results of attenuation coefficient in all kinds of sediments.
Tang Yingwu Lai Zhonggan Song Zhijie
BeiHai Institute of Chinese Academy of Science, Qingdao 266023 Navy Submarine Academy, Qingdao 266071
国际会议
北京
英文
347-351
2007-10-01（万方平台首次上网日期，不代表论文的发表时间）