Mohan Pan^1,2, Ting Yang³, Yuhang Dai³ and Ba Manh Le⁴, (1)Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China, (2)HIT Harbin Institute of Technology, Department of Physics, Harbin, China, (3)Southern University of Science and Technology, Shenzhen, China, (4)Tongji University, State Key Laboratory of Marine Geology, Shanghai, China