1. Tongji University, State Key Laboratory of Marine Geology, Shanghai, China; Tongji University, Center for Marine Resources, Shanghai, China, and Tongji University, School of Ocean and Earth Science, Shanghai, China.
2. SINOPEC, Geophysical Research Institute, Nanjing, China.
3. CNOOC, State Key Laboratory of Natural Gas-hydrate, Beijing, China.
4. SINOPEC, Petroleum Exploration and Production Research Institute, Beijing, China.
5. Tongji University, State Key Laboratory of Marine Geology, Shanghai, China; Tongji University, Center for Marine Resources, Shanghai, China, and Tongji University, School of Ocean and Earth Science, Shanghai, China. (corresponding author)