利用直达波和海面反射波到达时延反演深海声速剖面  

Deep sea sound speed profile inversion by using ray arrival time difference between direct wave and sea surface reflection wave

作　　者：余炎欣 李晟昊 季桂花[3] 李整林 YU Yanxin;LI Shenghao;JI Guihua;LI Zhenglin(State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Hainan Acoustics Laboratory,Chinese Academy of Sciences,Haikou 570105,Hainan,China;School of Marine Engineering and Technology,Sun Yat-sen University,Zhuhai 519028,Guangdong,China)

机构地区：[1]中国科学院声学研究所声场声信息国家重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]中国科学院声学研究所南海研究站,海南海口570105 [4]中山大学海洋工程与技术学院,广东珠海519082

出　　处：《声学技术》2022年第4期512-517,共6页Technical Acoustics

基　　金：国家自然科学基金资助项目(11874061)。

摘　　要：研究了利用直达波与海面反射波到达时延反演深海声速剖面的方法,采用最严经验模态方法组织利用历史水文数据并进行反演,并利用2016年南海中南部冬季调查的实验数据进行了验证。反演结果与实测声速剖面在深度小于710 m处的平均绝对误差的最大值为2.15 m·s^(-1),反演结果与实测值基本相符。The problem using arrival time difference between direct wave and sea surface reflection wave to invert the sound speed profile(SSP)in deep-ocean is studied based on ray theory.The gravest empirical mode(GEM)method is employed to organize the historical hydrographic data for SSPs inversion.Experimental data of the winter survey in the South China Sea in 2016 are analyzed.It is shown that the inverted SSP is fitted well with the measured SSP,and the maximum value of the absolute error is 2.15 m·s^(-1) in the shallow water layer(0~710 m).

关 键 词：到达时延 声速剖面反演 最严经验模态 

分 类 号：O427.1[理学—声学]