余炎欣,李晟昊,季桂花,李整林.利用直达波和海面反射波到达时延反演深海声速剖面[J].声学技术,2022,41(4):512~517 |
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 |
投稿时间:2021-05-12 修订日期:2021-05-24 |
DOI:10.16300/j.cnki.1000-3630.2022.04.005 |
中文关键词: 到达时延 声速剖面反演 最严经验模态 |
英文关键词: arrival time difference sound speed profile inversion gravest empirical mode |
基金项目:国家自然科学基金资助项目(11874061)。 |
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中文摘要: |
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。 |
英文摘要: |
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). |
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