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Effects of Warm Eddy on Long-range Sound Propagation in the East Sea
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 Title & Authors
Effects of Warm Eddy on Long-range Sound Propagation in the East Sea
Kim, Won-Ki; Cho, Chang-bong; Park, Joung-Soo; Hahan, Jooyoung; Na, Youngnam;
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 Abstract
It is well known that warm eddy is frequently developed through the year in the East Sea. The warm eddy may affect sound propagation due to changes of sound velocity structures in the sea water. To verify the effects of the warm eddy for long-range sound propagation, transmission loss and performance surface, which were used mean direct signal excess range generated by sound propagation modeling using re-analyzed climatology data on March 23th in 2007 were analysed. From these analyses, we found that characteristics of sound propagation in the sea water are changed by the warm eddy, and boundaries of the warm eddy act as a barrier for long-range sound propagation. Furthermore, these disadvantages of the eddy related to sound propagation were increased when the sea bottom depth is shallow.
 Keywords
East Sea;Warm eddy;Long-range sound propagation;Ocean bottom depth;
 Language
Korean
 Cited by
 References
1.
R. J. Urick, Principles of underwater sound, 3rd Ed. (McGraw-Hill, New York, 1983), pp. 113-114.

2.
S. Lim, J. Yun, Y. Kim, and S. Nam, "Variability of Underwater Sound Propagation in the Northern Part of the East Sea," J. Korea Institute of Military Science and Technology 10, 52-61 (2007).

3.
B. Kim, B. K. Choi, and B. Kim, "Influence of a Warm Eddy on Low-frequency Sound Propagation in the East Sea," Ocean and Polar Research 34, 325-335 (2012). crossref(new window)

4.
G. Jeronimo and J. Gomez-Valdez, "A subsurface warm-eddy off northern Baja California in July 2004," Geophysical Research Letters 34, 1-5 (2007).

5.
G. Chen, Y. Hou, X. Chu, and P. Qi, "Vertical structure and evloution of the Luzon Warm Eddy," Chinese J. Oceanology and Limnology 28, 955-961 (2010). crossref(new window)

6.
M. W. Lawrence, "Modeling of acoustic propagation across warm-core eddies," J. Acoust. Soc. Am. 73, 474-485 (1983). crossref(new window)

7.
Y. Isoda and S. Saitoh, "The Northward Intruding Eddy along the East Coast of Korea," J. Oceanography 49, 443-458 (1993). crossref(new window)

8.
C. Shin, "Characteristics of a Warm Eddy Observed in the Ulleung Basin inJuly 2005," Ocean and Polar Research 31, 283-296 (2009). crossref(new window)

9.
M. D. Collins, "Higher-order Pade approximations for accurate and stable elastic parabolic equations with application to interface wave propagation," J. Acoust. Soc. Am. 89, 1050-1057 (1991). crossref(new window)

10.
M. A. Ainslie, Principles of sonar performance modeling, (Springer-praxis, London, 2010), pp. 176-177.

11.
P. J. McDowell, Environmental and Statical Performance Mapping Model for Underwater Acoustic Detection Systems, (Ph.D. thesis, University of New Orleans, 2010).