Acta Physica Sinica, Volume. 69, Issue 14, 144301-1(2020)
Figures & Tables(18)
Fig. 4. Sound speed distribution with different
: (a)
; (b)
; (c)
; (d)
; (e)
Fig. 5. Noise vertical directionalities at different depths with different
(black dashed line in each subfigure indicates the location of the peak at the downward edge of the horizontal notch): (a)
; (b)
; (c)
; (d)
; (e)
Fig. 6. Noise vertical directionalities with different
at 800 and 2000 m depths: (a) 800 m; (b) 2000 m
Fig. 7. Noise vertical correlation functions with different
at 800 m depth: (a)
; (b)
Fig. 8. Noise vertical correlation functions with different
at 2000 m depth: (a)
; (b)
Fig. 9. Traces of the rays launching from the (0, 800 m) point with the launching polar angles varying within
under the conditions where
equals to 0,
, and 40 (green dashed lines, red solid lines and gray dotted lines in each subfigure indicate the NR, SR, and SRBR rays, respectively): (a)
0; (b)
; (c)
Fig. 10. Noise vertical noise directionalities
generated by noise sources within
at 800 m depth with 
equals to 0,
, and 40: (a)
; (b)
; (c)
Fig. 11. Traces of the rays launching from the (0, 2000 m) point with the launching polar angles varying within
under the conditions where
equals to 0,
, and 40 (green dashed lines, red solid lines and gray dotted lines in each subfigure indicate the NR, SR, and SRBR rays, respectively): (a)
; (b)
; (c)
Fig. 12. Noise vertical noise directionalities
generated by noise sources within
at 2000 m depth with 
equals to 0,
, and 40: (a)
; (b)
; (c)
Fig. 15. Transmission loss from
800 m depth to the noise sources depth (0.5 m) cross section computed by the Bellhop3D program in
and 3D modes: (a)
Fig. 16. Noise vertical directionalities at the off-center position 800 m depth generated by the noise sources within sector 1 and sector 2 in comparison with the noise vertical directionality at the eddy center 800 m depth
Table 1. Minimal lunching polar angle
, maximal launching polar angle
, central launching polar angle
, and launching polar angle width
of the SR rays launching from the (0, 800 m) point with the launching polar angle being greater than
under the conditions where
equals to 0,
, and 40View tableView in ArticleTable 1. Minimal lunching polar angle
, maximal launching polar angle
, central launching polar angle
, and launching polar angle width
of the SR rays launching from the (0, 800 m) point with the launching polar angle being greater than
under the conditions where
equals to 0,
, and 40$ D_{\rm c} $ $\theta_{{\rm{SR} }, {\rm{min} }}$ $\theta_{{\rm{SR} }, {\rm{max} }}$ $\theta_{{\rm{SR} }, {\rm{c} }}$ $ \Delta \theta_{\rm{SR}} $ 0 104.3° 105.1° 104.70° 0.8° –40 109.3° 110.0° 109.65° 0.7° 40 96.3° 97.7° 97.00° 1.4°
Table 2. Minimal launching polar angle
, maximal launching polar angle
, central launching polar angle
, and launching polar angle width
of the SR rays launching from the (0, 2000 m) point with the launching polar angle being greater than
under the conditions where
equals to 0,
, and 40View tableView in ArticleTable 2. Minimal launching polar angle
, maximal launching polar angle
, central launching polar angle
, and launching polar angle width
of the SR rays launching from the (0, 2000 m) point with the launching polar angle being greater than
under the conditions where
equals to 0,
, and 40$ D_{\rm c} $ $\theta_{{\rm{SR} }, {\rm{min} }}$ $\theta_{{\rm{SR} }, {\rm{max} }}$ $\theta_{{\rm{SR} }, {\rm{c} }}$ $ \Delta \theta_{\rm{SR}} $ 0 102.3° 103.4° 102.85° 1.1° –40 102.0° 103.4° 102.70° 1.4° 40 102.7° 103.4° 103.05° 0.7°
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Guang-Yu Jiang, Chao Sun, Qin-Ran Li.
Paper Information
Category:
Received: Jan. 9, 2020
Accepted: --
Published Online: Dec. 28, 2020
The Author Email:
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