A Method of Measuring the In Situ Seafloor Sound Speed using Two Receivers with Warping Transformation
LI Feng-Hua1**, ZHANG Bo1,2, GUO Yong-Gang1
1State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190 2University of Chinese Academy of Sciences, Beijing 100190
Abstract：We present a method of measuring the in situ superficial seafloor sound speed by using two receivers deployed vertically in sediment, based on the dispersion characteristic of normal modes in shallow water. Warping transformation is adopted to extract the first normal mode from the broadband propagation signals. Some experimental results which could validate the method are shown. One of the advantages of the method is that the seafloor sound speed can be solved directly from the relative vertical transmission loss of the first normal mode without the exact priori information of the environmental parameters such as the sound speed profile, the water-column depth and the source location.
(Acoustics of sediments; ice covers, viscoelastic media; seismic underwater acoustics)
引用本文:
. [J]. 中国物理快报, 2014, 31(2): 24301-024301.
LI Feng-Hua, ZHANG Bo, GUO Yong-Gang. A Method of Measuring the In Situ Seafloor Sound Speed using Two Receivers with Warping Transformation. Chin. Phys. Lett., 2014, 31(2): 24301-024301.
2014, Vol. 31 
