1. Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
2. National Engineering Research Center of Gas Hydrate Exploration and Development, Guangzhou 511458, China
3. CCCC-FHDI Engineering Co., Ltd., Guangzhou 510220, China
4. Department of Engineering and Applied Science, Memorial University of Newfoundland, St. John’s, NF A1B 3X5, Canada