Sound fluctuation caused by the internal wave under different stratified conditions in the Pacific

LI Jiaxun; ZHANG Ren; JIN Baogang; CHEN Yide

doi:10.3969/j.issn.0253-4193.2013.03.009

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LI Jiaxun, ZHANG Ren, JIN Baogang, CHEN Yide. Sound fluctuation caused by the internal wave under different stratified conditions in the Pacific[J]. Haiyang Xuebao, 2013, 35(3): 78-86. doi: 10.3969/j.issn.0253-4193.2013.03.009

Citation:

LI Jiaxun, ZHANG Ren, JIN Baogang, CHEN Yide. Sound fluctuation caused by the internal wave under different stratified conditions in the Pacific[J]. Haiyang Xuebao, 2013, 35(3): 78-86. doi: 10.3969/j.issn.0253-4193.2013.03.009

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Sound fluctuation caused by the internal wave under different stratified conditions in the Pacific

doi: 10.3969/j.issn.0253-4193.2013.03.009

1.
College of Meteorology and Oceanography, PLA University of Sciecne and Technology, Nanjing 211101, China
2.
Beijing Institue of Applied Meteorology, Beijing 100029, China

Received Date: 2010-06-04
Rev Recd Date: 2011-04-14

Abstract

Abstract

The stratified conditions of seawater in the Pacific were analyzed and classified based on Argo data. Using internal wave dynamics method, the numerical value of the sound fluctuation caused by the internal wave was solved,and the sound fluctuations in different stratified conditions of seawater were simulated and analyzed. The results show that the vertical mode shape is distorted because of the nonhomogeneous density of seawater and the existence of the pycnocline,and the distortion corresponds to the intensity of pycnocline. And the number and the depths of stratification apexes have good corresponding relationships with the sound fluctuations. In general, sound transmission characteristics with internal wave are similar to the transmission characteristics without internal wave. However, acoustic field responses to the disturbance of internal wave under different stratified conditions are diverse.
- internal wave,
- stratification of seawater,
- sound fluctuation,
- Argo data

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References(14)

References

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