School of Marine Sciences Yat-sen University 519082;
Gas Hydrate Engineering Technology Center Marine Geological Survey Geological Survey of Natural Resources 510075;
Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) 519082;
School of Mathematics and Physics University of Geosciences(Wuhan) 430074;
Qingdao Institute of Marine Geology 266071;
Department of Geology&Geophysics A&M University Station 77843-3115 States;
Natural gas hydrate; Submarine slope failure; Gas chimney; Buoyancy extrusion; Seepage-derived deformation; Shenhu area; Northern South China Sea;