Geoacoustic inversion for bottom parameters in a thermocline environment in the northern area of the South China Sea

查看全文 作　　者：LI [1,2]Mengzhu;LI [1,2]Zhenglin;Li [3]Qianqian

机构地区：[1]State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190;[2]University of Chinese Academy of Sciences,Beijing 100049;[3]College of Geomatics,Shandong University of Science and Technology,Qingdao 266590

出　　处：《Chinese Journal of Acoustics》索引2020年第39卷第1期,共14页

基　　金：supported by the National Natural Science Foundation of China(11434012,41561144006)。 摘　　要：Bottom acoustic parameters have important influence on the application of underwater acoustic propagation and source location.The acoustic parameters of the seabed in the northern of the South China Sea(SCS)were inversed using the experiment data from an acoustic experiment in 2015.Based on the comprehensive analysis of the influence of the sound speed fluctuation and the geoacoustic model on seabed inversion,the multi-parameter hybrid acoustic inversion scheme is improved by selecting the equivalent mean sound speed profile(SSP)and half-infinite liquid bottom model to save the inversion dimensions in the matched field processing(MFP)inversion.The inverted bottom sound speed and density are in good agreement with the core sampling measurements.The nonlinear empirical relationship of the attenuation coefficient with frequency is given out.The inversion results are meaningful to the sound propagation research and application in the northern area of the SCS. 关键词：SEABED PARAMETERS sound

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Geoacoustic inversion for bottom parameters in a thermocline environment in the northern area of the South China Sea

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