国家自然科学基金41330964,41406077;国土资源部海洋区域地质调查项目GZH200800501,GZH201400205,GZH201400201,DD20160137National Natural Science Foundation of China,No.41330964,41406077;Marine Geological Survey in Ministry of Land and Resources of China,No.GZH200800501,GZH201400205,GZH201400201,DD20160137