海水温盐垂直结构的声反射回波模型及应用

毛科峰; 陈希; 李振锋; 丁亚梅

doi:10.3969/j.issn.0253-4193.2014.11.007

海水温盐垂直结构的声反射回波模型及应用

doi: 10.3969/j.issn.0253-4193.2014.11.007

1.
中国人民解放军理工大学气象海洋学院, 江苏南京 211101
2.
中国洛阳电子装备试验中心, 河南洛阳 471001
3.
东海舰队37分队, 浙江宁波 315122

基金项目: 国家自然科学基金(41331174,11102232)。

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- 收稿日期: 2013-08-21

The acoustic echo model of vertical structure of seawater temperature and salinity and its application

1.
Institute of Meteorology, People's Liberation Army University of Science and Technology, Nanjing 211101, China
2.
China Luoyang Electronic Equipment Test Center, Luoyang 471001, China
3.
The No. 37 Unit of East China Sea Fleet, Ningbo 315122, China

摘要

摘要: 基于等时厚分层假设,建立海水温盐垂直结构的声反射回波计算模型,并对实际海洋层结状态的声反射回波特征进行了详细分析。结果表明:声反射回波幅度变化的位置和海水介质温盐梯度变化不为零的位置一致,回波幅度和梯度变化幅度成正比;而回波的极性反映了梯度变化的趋势。将该模型用于反演试验,能够直接得到海水温、盐垂直结构反演结果,效果较好,克服了以往反演算法中不便于密度和声速分离的缺点。
- 垂直温盐结构 /
- 反射回波 /
- 地球物理海洋学 /
- 反演
Abstract: Based on assumptions of layered media with equal time layer thickness,a model which can be used to compute the acoustic reflected echo of seawater thermohaline profile is built. The characteristics of the reflected echo of the seawater profile are analyzed in detail. The results are summarized as follows. The amplitude of the reflected echo changes where there is a variation in the thermohaline gradient. The amplitude of reflected echo is proportional to the change range of thermohaline gradient,and the polarity of the echo reflects the change trend of the gradient. The model is used in inversion experimentation of the vertical structure of ocean temperature and salinity. The model is verified by the measurements and overcomes the shortcomings of the previous inversion algorithm which does not facilitate the separation of density and velocity of sound.
- vertical structure of thermohaline /
- acoustic echo /
- geophysical oceanography /
- inversion

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参考文献(23)

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海水温盐垂直结构的声反射回波模型及应用

doi: 10.3969/j.issn.0253-4193.2014.11.007

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The acoustic echo model of vertical structure of seawater temperature and salinity and its application

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海水温盐垂直结构的声反射回波模型及应用

doi: 10.3969/j.issn.0253-4193.2014.11.007

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出版历程

The acoustic echo model of vertical structure of seawater temperature and salinity and its application

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出版历程

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