1. Zhejiang Engineering Research Center of Marine Geotechnical Investigation Technology and Equipment, Zhejiang Huadong Geotechnical Investigation & Design Institute Co., Ltd., Powerchina Huadong Engineering Co., Ltd., Hangzhou 311122, China
2. Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
3. College of Engineering, Ocean University of China, Qingdao 266100, China
4. Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UK