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

Mao Kefeng; Chen Xi; Li Zhenfeng; Ding Yamei

doi:10.3969/j.issn.0253-4193.2014.11.007

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Mao Kefeng, Chen Xi, Li Zhenfeng, Ding Yamei. The acoustic echo model of vertical structure of seawater temperature and salinity and its application[J]. Haiyang Xuebao, 2014, 36(11): 57-63. doi: 10.3969/j.issn.0253-4193.2014.11.007

Citation:

Mao Kefeng, Chen Xi, Li Zhenfeng, Ding Yamei. The acoustic echo model of vertical structure of seawater temperature and salinity and its application[J]. Haiyang Xuebao, 2014, 36(11): 57-63. 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

doi: 10.3969/j.issn.0253-4193.2014.11.007

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

Received Date: 2013-08-21

Abstract

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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References(23)

References

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