The Effects of Seamounts on Sound Propagation in Deep Water
LI Wen1,3, LI Zheng-Lin1,2**, ZHANG Ren-He1, QIN Ji-Xing1, LI Jun1,3, NAN Ming-Xing4
1State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190 2Haikou Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Haikou 570105 3University of Chinese Academy of Sciences, Beijing 100190 4General Staff MET-HYD Department, Beijing 100081
Abstract：A propagation experiment was conducted in the South China Sea in 2014 with a flat bottom and seamounts respectively by using explosive sources. The effects of seamounts on sound propagation are analyzed by using the broadband signals. It is observed that the transmission loss (TL) decreases up to 7 dB for the signals in the first shadow zone due to the seamount reflection. Moreover, the TL might increase more than 30 dB in the converge zone due to the shadowing by seamounts. Abnormal TLs and pulse arrival structures at different ranges are explained by using the ray and wave theory. The experimental TLs and arrival pulses are compared with the numerical results and found to be in good agreement.
. [J]. 中国物理快报, 2015, 32(06): 64302-064302.
LI Wen, LI Zheng-Lin, ZHANG Ren-He, QIN Ji-Xing, LI Jun, NAN Ming-Xing. The Effects of Seamounts on Sound Propagation in Deep Water. Chin. Phys. Lett., 2015, 32(06): 64302-064302.
2015, Vol. 32 
