Pengfei Xue¹, Liao Chang¹, Shishun Wang¹, Shengfa Liu², Jinhua LI³, Xuefa Shi⁴, Somkiat Khokiattiwong⁵ and Narumol Kornkanitnan⁵, (1)Peking University, School of Earth and Space Sciences, Beijing, China, (2)First Institute of Oceanography, SOA, China, Qingdao, China, (3)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (4)First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China, (5)Marine and Coastal Resources Research and Development Institute, Department of Marine and Coastal Resources, Bangkok, Thailand